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Oki MSM85C154HVS, User Manual

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INTERNAL SPECIFICATIONS

101

4.6.2 Special function registers for serial port

4.6.2.1 SCON (Serial Port Control Register)

SCON is an 8-bit special function register consisting of control bits for specifying serial port
operation modes and enabling/disabling data reception, storage bits for the ninth data bit
transmitted and received during 11-bit frame UART mode, and the serial port status flag.
In addition to specifying SCON by data address 98H, each bit can be specified by bit
addresses.
The functions of each SCON bit are listed in Table 4-15, and the functions of each operational
mode specified by SCON are indicated in Table 4-16.

Summary of Contents for MSM85C154HVS

Page 1: ...MSM80C154S MSM83C154S MSM85C154HVS USER S MANUAL...

Page 2: ...rranty for the use of its products and assumes no responsibilityforanyerrorswhichmayappearinthisdocumentnor does it make a commitment to update the information contained herein OKI retains the right t...

Page 3: ...me charts 24 1 External program memory read cycle timing chart 24 2 MOVX A Rr 24 3 MOVX Rr A 25 4 MOVX A DPTR 25 5 MOVX DPTR A 26 6 MOV direct PORT 0 1 2 3 execution 26 2 6 4 MSM83C154S fundamental op...

Page 4: ...CC B 65 4 4 1 Outline 65 4 4 2 Special function registers 67 4 4 2 1 Timer mode register TMOD 67 4 4 2 2 Power control register PCON 68 4 4 2 3 Timer control register TCON 69 4 4 2 4 Serial port contr...

Page 5: ...101 4 6 2 2 SBUF 103 4 6 2 3 TCLK 103 4 6 2 4 RCLK 103 4 6 2 5 SMOD 104 4 6 2 6 SERR 105 4 6 3 Operating modes 106 4 6 3 1 Mode 0 106 4 6 3 1 1 Outline 106 4 6 3 1 2 Mode 0 baud rate 106 4 6 3 1 3 Mo...

Page 6: ...nstruction is executed after temporarily returning to the main routine from continuous interrupt processing 142 4 7 5 4 Interrupt response time chart when an IE or IP manipulating instruction is execu...

Page 7: ...ctions 212 6 ELECTRICAL CHARACTERISTICS 6 1 Absolute Maximum Ratings 216 6 2 Operational Ranges 216 6 3 DC Characteristics 217 6 4 External Program Memory Access AC Characteristics 221 6 5 External Da...

Page 8: ...1 INTRODUCTION...

Page 9: ...MSM80C154S 83C154S 85C154HVS 2...

Page 10: ...clude logical processing of the carry flag and specified bit within each register transfer between the carry flag and specified bit in certain registers transfer of specified bits between different re...

Page 11: ...ters can also be used in cancelling CPU power down modes UART based serial communication can be executed at any baud rate by carry signal from timer counter 1 or timer counter 2 If an overrun or frami...

Page 12: ...2 PD mode CPU and oscillation all stopped Software setting Setting I O ports to floating status possible 3 HPD mode CPU and oscillation all stopped Hardware setting Setting I O ports to floating statu...

Page 13: ...erating voltage range 1 When operating VCC 2 2 to 6V varies according to frequency 2 When stopped VCC 2 to 6V PD or HPD mode Instruction execution cycle 1 2 byte 1 machine cycle instructions 2 Multipl...

Page 14: ...ditional timer counter 2 An additional timer interrupt 2 An additional 8 bit timer 2 control register T2CON 0C8H An additional 8 bit I O control register IOCON 0F8H Addition of two bits bit 5 PT2 and...

Page 15: ...MSM80C154S 83C154S 85C154HVS 8...

Page 16: ...2 SYSTEM CONFIGURATION...

Page 17: ...MSM80C154S 83C154S 85C154HVS 10...

Page 18: ...P1 3 P1 4 P1 5 P1 6 P1 7 P2 0 P2 1 P2 2 P2 3 P2 4 P2 5 P2 6 P2 7 P3 0 P3 1 P3 2 P3 3 P3 4 P3 5 P3 6 P3 7 T2 T2EX RXD TXD INT0 INT1 T0 T1 HPDI WR RD PORT 0 BUS PORT PORT 1 PORT 2 PORT 3 XTAL1 XTAL2 RE...

Page 19: ...26 P2 5 25 P2 4 24 P2 3 23 P2 2 22 P2 1 21 P2 0 MSM80C154SRS MSM83C154SRS MSM80C154SRS MSM83C154SRS Top View 40 Pin Plastic DIP 1 P1 5 2 P1 6 3 P1 7 4 RESET 5 P3 0 RXD 6 NC 7 P3 1 TXD 8 P3 2 INT0 9 P...

Page 20: ...32 PSEN 31 P2 7 30 P2 6 29 P2 5 18 19 20 21 22 23 24 25 26 27 28 6 5 4 3 2 1 44 43 42 41 40 1 P1 5 2 P1 6 3 P1 7 4 RESET 5 P3 0 RXD 6 NC 7 P3 1 TXD 8 P3 2 INT0 9 P3 3 INT1 10 P3 4 T0 11 P3 5 T1 HPDI...

Page 21: ...ic QFJ QFJ44 P S650 1 27 44 Pin Plastic QFP DFP44 P 910 0 80 2K 44 Pin Plastic TQFP TQFP44 P 1010 0 80 K 40 Pin Ceramic Piggy Back ADIP40 C 600 2 54 MSM80C154S RS MSM83C154S XXX RS MSM80C154S JS MSM83...

Page 22: ...nal dimensions Figure 2 3 MSM80C154S MSM83C154S external dimensions MSM80C154SRS MSM83C154SRS 40 pin Plastic DIP DIP40 P 600 2 54 MSM80C154SJS MSM83C154SJS 44 Pin Plastic QFJ QFJ44 P S650 1 27 MSM80C1...

Page 23: ...MSM80C154S 83C154S 85C154HVS 16 MSM80C154STS MSM83C154STS 44 Pin Plastic TQFP TQFP44 P 1010 0 80 K...

Page 24: ...5C154HVS pin layout of bottom side is the same as the pin layout for MSM83C154SRS The 27C64 128 device should be used for EPROM M85C154H OKI JAPAN XXXX 2764 27128 Pin 1 for 2764 27128 Figure 2 4 MSM85...

Page 25: ...A RESET PORT 1 P1 0 P1 7 PORT 3 P3 0 P3 7 TL1 TH0 TL0 TMOD TCON IE IP SCON TIMER COUNTER 0 1 INTERRUPT SERIAL IO SBUF T SBUF R T2CON TL2 TIMER COUNTER 2 PCH TH2 RCAP 2L RCAP 2H PCL PCHL PCLL R W AMP R...

Page 26: ...NTER 0 1 INTERRUPT SERIAL IO SBUF T SBUF R T2CON TL2 TIMER COUNTER 2 PCH TH2 RCAP 2L RCAP 2H PCL PCHL PCLL R W AMP 256WORD 8bit RAMDP PSW ACC TR2 TR1 BR ALU IR AIR C ROM SPECIAL FUNCTION REGISTER ADDR...

Page 27: ...1 INTERRUPT SERIAL IO SBUF T SBUF R T2CON TL2 TIMER COUNTER 2 PCH TH2 RCAP 2L RCAP 2H PCL PCHL PCLL R W AMP 256WORD 8bit RAMDP PSW ACC TR2 TR1 BR ALU IR AIR C ROM SPECIAL FUNCTION REGISTER ADDRESS DE...

Page 28: ...2 fundamental clock pulses 1 byte 1 machine cycle and 2 byte 1 machine cycle instructions are fetched into the instruction register during M1 S1 decoded during M1 S2 and executed during M1 S3 thru M1...

Page 29: ...H PCH PCH DATA STABLE DATA STABLE PORT OLD DATA PORT NEW DATA Instruction decoding Instruction excecution PC 1 PC 1 TM 1 Instruction decoding Instruction excecution PC 1 TM 1 TM 1 Instruction decoding...

Page 30: ...when an instruction or data is fetched The PSEN signal is valid when at 0 level and external program data is enabled when in this valid state Although two PSEN signal outputs are obtained in a single...

Page 31: ...L OUT INST IN PCL OUT INST IN PCL OUT INST IN INST IN S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 PCL OUT INST IN PCH OUT PCH OUT PORT 2 LATCH DATA OUT XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 2 1...

Page 32: ...1 0 PCH OUT Rr OUT ACC DATA OUT PCL OUT INST IN WR 1 0 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 PCL OUT INST IN PCH OUT PCH OUT DPH OUT XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 2 1 0 PCH OUT DP...

Page 33: ...0 PORT 2 1 0 PCH OUT DPL OUT ACC DATA OUT PCL OUT INST IN WR 1 0 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 2 3 PIN DATA 1 0 CPU DATA SAMPLED 1 0 PIN DATA STABLE...

Page 34: ...1 0 PORT 2 LATCH DATA OUT RAM DATA IN S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 PORT 0 LATCH DATA XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 2 1 0 Rr OUT ACC DATA OUT FLOATING WR 1 0 PORT 2 LATCH D...

Page 35: ...AM DATA IN PORT 2 LATCH DATA OUT DPH OUT PORT 2 LATCH DATA OUT S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 PORT 2 LATCH DATA OUT DPH OUT PORT 2 LATCH DATA OUT S1 PORT 0 LATCH DATA XTAL1 1 0 ALE 1 0 PSEN...

Page 36: ...S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 2 3 PIN DATA 1 0 CPU DATA SAMPLED 1 0 PIN DATA STABLE Figure 2 20 MSM83C154S MOV direct PORT 0 1 2 3 execution 5 MOV dire...

Page 37: ...n instruction register AIR and register manipulation decoder PLA for data addresses and bit addresses OperationcodesarepassedtotheIR anddataandbitaddressesarepassedtotheAIR CPU control signals are for...

Page 38: ...t data from one or two data sources the ALU processes that data in accordance with control signals from the PLA The ALU is capable of executing the following processes Additions and subtractions with...

Page 39: ...INTERNAL ROM 16KWORD 8BIT CPU INTERNAL DATA BUS EXTERNAL ROM MODE ENABLE ROM CPU INTERNAL DATA BUS Figure 2 23 MSM80C154S MSM83C154S program ounter This program counter is a binary up counter which i...

Page 40: ...ess 0 thru address 16383 External instructions are executed when the address is greater than 16383 The program area is outlined in Figure 2 24 and a diagram of ROM connections made when external instr...

Page 41: ...LATCH P0 0 P0 1 P0 2 P0 3 P0 4 P0 5 P0 6 P0 7 ALE P2 0 P2 1 P2 2 P2 3 P2 4 P2 5 P2 6 P2 7 PSEN MSM80C154S MSM83C154S A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 OUTPUT ENABLE CS Q7 Q6 Q5 Q4...

Page 42: ...s used when external data memory contents are transferred to the accumulator The external data memory connection diagram is shown in Figure 2 26 and the external data memory access time chart is shown...

Page 43: ...3 LATCH P0 0 P0 1 P0 2 P0 3 P0 4 P0 5 P0 6 P0 7 ALE P2 0 P2 1 P2 2 P2 3 P2 4 P2 5 P2 6 P2 7 RD MSM80C154S MSM83C154S A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 CS R W 7 6 5 4 3 2 1 0 ROM 64...

Page 44: ...H PCH PCH XTAL1 1 0 ALE 1 0 PSEN 1 0 WR 1 0 PORT 0 1 0 PORT 2 1 0 S6 PCL MOVX DPTR A S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 PCL PCL PCL PCL PCL PCL DPL INS...

Page 45: ...connection diagram is shown in Figure 2 28 and the external data memory access time chart is shown in Figure 2 29 When the indirect register external memory instruction is executed the CPU passes the...

Page 46: ...Q3 Q4 Q5 Q6 Q7 MSM74HC373 LATCH P0 0 P0 1 P0 2 P0 3 P0 4 P0 5 P0 6 P0 7 ALE RD MSM80C154S MSM83C154S A0 A1 A2 A3 A4 A5 A6 A7 CS R W 7 6 5 4 3 2 1 0 ROM 256W 8BIT I O WR Figure 2 28 Connection circuit...

Page 47: ...CH PCH PCH XTAL1 1 0 ALE 1 0 PSEN 1 0 WR 1 0 PORT 0 1 0 PORT 2 1 0 S6 PCL MOVX Rr A S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 PCL PCL PCL PCL PCL PCL Rr INSTR...

Page 48: ...3 CONTROL...

Page 49: ...MSM80C154S 83C154S 85C154HVS 42...

Page 50: ...83C154S devices If an external clock is applied to XTAL1 the input should be at 50 duty and C MOS level IDLE MODE PD HPD MODE CPU CONTROL CLOCK TIMER S I O INTERRUPT 1M XTAL1 XTAL2 XTAL C C MSM80C154S...

Page 51: ...he capacity of the compensating capacitor depends on the ceramic resonator The XTAL1 2 frequency depends on VCC Figure 3 2 Ceramic resonator connection diagram IDLE MODE PD HPD MODE CPU CONTROL CLOCK...

Page 52: ...registers are then initialized set to 0 two machine cycles after the XTAL1 2 oscillator commences regular operation When the reset is released instruction execution is started in the third machine cy...

Page 53: ...M1 or M2 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 PORT DATA XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 RESET 1 0 PORT DATA PORT DATA PORT DATA CPU RES...

Page 54: ...2 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 RESET 1 0 CPU RESET CONTROL 1 0 RESET EXCECUTE 1 0 PORT DATA 1 P...

Page 55: ...2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 RESET 1 0 CPU RESET CONTROL 1 0 RESET EXCECUTE 1 0 F...

Page 56: ...S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 RESET 1 0 CPU RESET CONTROL 1 0 RESET EXCECUTE 1 0 PORT DATA 1 S6 FLOATING...

Page 57: ...in the CPU reset control circuit resulting in the reset operation being started by the CPU The CPU reset state is released when the 1 level on the RESET pin is changed to 0 An input signal level belo...

Page 58: ...he CPU is then reset after normal XTAL1 2 oscillation has resumed The internal CPU status when the CPU is reset is shown in Table 3 1 Table 3 1 MSM80C154S MSM83C154S reset internal status Register Nam...

Page 59: ...ction is to be executed 1 Internal ROM mode If the EA pin is connected to VCC and a 1 reset signal is applied to the RESET pin to reset the CPU an internal program memory ROM is executed from address...

Page 60: ...4 INTERNAL SPECIFICATIONS...

Page 61: ...MSM80C154S 83C154S 85C154HVS 54...

Page 62: ...esses consist of eight bits and range from 00 to 0FFH in binary which correspond to 0 thru 255 in decimal All data memory RAM and special function registers ACC B TCON P0 exist in these 256 locations...

Page 63: ...208 0D0H 205 0CDH 204 0CCH 203 0CBH 202 0CAH 200 0C8H 184 0B8H 176 0B0H 168 0A8H 160 0A0H 153 99H 152 98H 144 90H 141 8DH 140 8CH 139 8BH 138 8AH 137 89H 136 88H 135 87H 131 83H 130 82H 129 81H 128 8...

Page 64: ...edatamemoryaddressrangefrom00to7FHisanareawheredataaddressingispossible 8 bit data manipulations can be handled directly by data address manipulation instructions The data memory address range from 80...

Page 65: ...39 38 37 36 35 34 33 32 31 30 2F 2E 2D 2C 2B 2A 29 28 27 26 25 24 23 22 21 20 1F 1E 1D 1C 1B 1A 19 18 17 16 15 14 13 12 11 10 0F 0E 0D 0C 0B 0A 09 08 07 06 05 04 03 02 01 00 20H 1FH 18H 17H 10H 0FH 0...

Page 66: ...D7 D6 D5 D4 D3 D2 D1 D0 R0 01 1 D7 D6 D5 D4 D3 D2 D1 D0 R1 02 2 D7 D6 D5 D4 D3 D2 D1 D0 R2 03 3 D7 D6 D5 D4 D3 D2 D1 D0 R3 04 4 D7 D6 D5 D4 D3 D2 D1 D0 R4 05 5 D7 D6 D5 D4 D3 D2 D1 D0 R5 06 6 D7 D6 D...

Page 67: ...ed in the stack when the stack pointer contents are 7FH and the status where accumulator contents are pushed during interrupt routine and are subsequently saved in the stack are shown in Table 4 2 The...

Page 68: ...r data is 0 and register 1 is specified when the data is 1 When this instruction is executed register data is read from the specified register 0 or 1 and the read out register data is written into the...

Page 69: ...register designation combinations When this instruction is executed one of the registers R0 thru R7 from the register group specified by the PSW RS0 and RS1 bank data is specified The contents of the...

Page 70: ...any one of eight bits to be specified The bit designation combinations are listed in able 4 4 The data memory is addressed by bits b3 b4 b5 b6 and b7 of byte 2 with b7 being 0 These bits can be expres...

Page 71: ...1 1 Table 4 5 Addressing combination table b7 b6 b5 b4 b3 RAM address 0 0 0 0 0 0 20H 32 1 0 0 0 0 1 21H 33 2 0 0 0 1 0 22H 34 3 0 0 0 1 1 23H 35 4 0 0 1 0 0 24H 36 5 0 0 1 0 1 25H 37 6 0 0 1 1 0 26H...

Page 72: ...a addressing 13 registers P0 P1 P2 P3 TCON T2CON SCON IE IP PSW ACC B and IOCON can be specified by bit addressing If a register which does not exist at the data address is accessed when a special fun...

Page 73: ...6 A5 A4 A3 A2 A1 A0 9F 9E 9D 9C 9B 9A 99 98 97 96 95 94 93 92 91 90 8F 8E 8D 8C 8B 8A 89 88 87 86 85 84 83 82 81 80 IOCON B ACC PSW TH2 TL2 RCAP2H RCAP2L T2CON IP P3 IE P2 SBUF SCON P1 TH1 TH0 TL1 TL0...

Page 74: ...this bit is 0 the TR0 bit of TCON timer control register is used to control the start and stop of timer counter 0 counting If this bit is 1 timer counter 0 starts counting when both the TR0 bit of TCO...

Page 75: ...hether the interrupt is a normal interrupt or a PD mode release interrupt Reserved bit The output data is 1 if the bit is read Bit used to specify cancellation of CPU power down mode IDLE or PD by int...

Page 76: ...and in trigger detect mode when 1 Interrupt request flag for external interrupt 1 Bit is reset automatically when interrupt is serviced Bit can be set and reset by software when IT1 1 Counting start...

Page 77: ...y software during interrupt service routine This flag is set after the eighth bit of data has been sent when in mode 0 or after the last bit of data has been sent when in any other mode The ninth bit...

Page 78: ...en bit is 1 Interrupt control bit for external interrupt 1 Interrupt disabled when bit is 0 Interrupt enabled when bit is 1 Interrupt control bit for timer interrupt 1 Interrupt disabled when bit is 0...

Page 79: ...external interrupt 1 Priority is assigned when bit is 1 Interrupt priority bit for timer interrupt 1 Priority is assigned when bit is 1 Interrupt priority bit for serial port Priority is assigned whe...

Page 80: ...tion The flag is also set to 1 if the resultant product of a multiplication instruction MUL AB is greater than 0FFH but is reset to 0 if the product is less than or equal to 0FFH RAM register bank swi...

Page 81: ...t port when this bit is 1 Port 2 becomes a high impedance input port when this bit is 1 Port 3 becomes a high impedance input port when this bit is 1 The 10 kohm pull up resistance for ports 1 2 and 3...

Page 82: ...circuit drive clock control bit Timer counter 2 is switched to baud rate generator mode when this bit is 1 and the timer counter 2 carry signal becomes the serial Port transmit clock Note however that...

Page 83: ...l modes for a wide range of applications Note that counting is stopped when XTAL1 2 are stopped 4 5 2 Timer counters 0 and 1 4 5 2 1 Outline Timer counters 0 and 1 are both equipped with a 16 bit bina...

Page 84: ...d 1 TIMER 1 GATE C T M1 M0 GATE C T M1 M0 7 6 5 4 3 2 1 0 TIMER MODE REGISTER TMOD TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 7 6 5 4 3 2 1 0 TIMER CONTROL REGISTER TCON TIMER 0 DETECTOR T1 PIN PORT 3 5 DATA INT...

Page 85: ...lock is passed to the timer counter when the C T bit is 0 This internal clock is the result of dividing XTAL1 2 by 12 The S3 timing signal see Figure 2 9 becomes the clock The external clock is applie...

Page 86: ...with the S3 timing signal to form the timer counter clock signal which then serves as theF Flresetsignal TheresetF Flthenwaitsforthenextexternalclock The 0 and 1 signal cycle widths of the respective...

Page 87: ...fbits3and7inthetimermoderegister TMOD 89H indicated in Table 4 9 Timer counter 0 is controlled by the bit 3 GATE bit When the GATE bit is 0 counting is started and stopped only by TR0 When the GATE bi...

Page 88: ...S5 INT0 or INT1 GATE TR0 or TR1 T0 or T1 C T Figure 4 10 INT0 and INT1 timer counter start stop control circuit Table 4 10 GATE INT TR timer counter control tables GATE TR0 INT0 RUN STOP TIMER 0 0 0...

Page 89: ...0 Bit Flag Set 7 6 5 4 3 2 1 0 GATE C T M1 M0 GATE C T M1 M0 4 5 2 5 2 Mode 0 M1 M0 0 0 In mode 0 timer counters 0 and 1 both become 13 bit timer counters by the circuit connection shown in Figures 4...

Page 90: ...S5 Q TR0 T0 PIN PORT 3 4 Q0 Q4 TL0 5BITS Q0 Q7 TH0 8BITS C DETECTOR TF0 Figure 4 11 Timer counter 0 mode 0 DETECTOR XTAL 1 12 S3 GATE C T DATA INT1 PIN PORT 3 3 LATCH S5 Q TR1 T1 PIN PORT 3 5 Q0 Q4 T...

Page 91: ...13 and 4 14 TL0 and TL1 in timer counters 0 and 1 serve as the counter for the eight lower bits and TH0 and TH1 serve as the counter for the eight upper bits TL0 is set by the timer counter 0 carry s...

Page 92: ...H S5 Q TR0 T0 PIN PORT 3 4 Q0 Q7 TL0 8BITS Q0 Q7 TH0 8BITS C DETECTOR TF0 Figure 4 13 Timer counter 0 model DETECTOR XTAL 1 12 S3 GATE C T DATA INT1 PIN PORT 3 3 LATCH S5 Q TR1 T1 PIN PORT 3 5 Q0 Q7 T...

Page 93: ...it auto reloader section and TL0 and TL1 serve as the timer counter section If a carry signal is generated by the 8 bit timer counter TL0 and TL1 the respective auto reloader register data is preset i...

Page 94: ...PIN PORT 3 4 Q0 Q7 TL0 8BITS C DETECTOR TF0 Q0 Q7 TH0 8BITS RELOAD DATA Figure 4 15 Timer counter 0 mode 2 DETECTOR XTAL 1 12 S3 GATE C T DATA INT1 PIN PORT 3 3 LATCH S5 Q TR1 T1 PIN PORT 3 5 Q0 Q7 T...

Page 95: ...lled only by TR1 and the control only covers count starting and stopping TF1 is set by a carry signal generated by TH0 When timer counter 0 is set to mode 3 timer counter 1 can operate in modes 0 1 or...

Page 96: ...r preset data values are set in timer counters 0 and 1 and a counter clock designation is set in bit 2 C T of the timer mode register TMOD 89H If 1 is then set in bit 6 T32 of the 1 0 control register...

Page 97: ...cremented by 1 In addition Q of F F1 is set on the trailing edge of T0 or T1 Thus the counter is incremented by additional 1 The same event occurs not only by the external interrupt but also by the ov...

Page 98: ...software power down mode can not be set Example Timer 0 is in mode 1 of external clock Content of timer 0 is FF Interrupt by timer 0 is enabled TO pin is 1 If the above conditions all are established...

Page 99: ...0 and CP RL2 1 The timer counter 2 contents are passed to the capture register RCAP2L RCAP2H when the level o the signal applied to the T2EX pin bit 1 of port 1 is changed from 1 to 0 with EXEN2 1 16...

Page 100: ...4 14 Timer counter 2 modes RCLK TCLK CP RL2 TR2 0 0 0 1 0 0 1 1 RCLK TCLK 1 1 0 Mode 16 bit auto reload 16 bit capture Baud rate generator All operations stopped 4 5 3 3 1 16 bit auto reload mode 16 b...

Page 101: ...and CP RL2 1 Timer counter 2 operates in the following way when 16 bit capture mode is set When the signal applied to the T2EX pin bit 1 of port 1 is changed from level 1 to 0 the TL2 and TH2 count c...

Page 102: ...2 and TH2 and the timer counter commences to count from that preset value The carry signal is passed to a serial port The timer counter 2 carry signal activates the serial port receive circuit when RC...

Page 103: ...8 BIT C RCAP2L Q0 Q7 TH2 8 BIT C RCAP2H DETECTOR T2EX PORT 1 1 TR2 EXEN2 DETECTOR EXF2 TIMER 2 INTERRUPT RCLK TCLK 1 CP RL2 C T2 RCLK TCLK 2 TIMER 1 OVERFLOW SMOD PCON bit 7 16 RX CLOCK MODE1 3 16 TX...

Page 104: ...Q D L Q D R F F1 F F2 S5 T2 PORT 1 0 VCC RESET TIMER COUNTER 2 CLOCK 1 0 12T 12T S3 Figure 4 23 Timer counter 2 external clock detector circuit 4 5 3 4 2 T2EX timer counter 2 external flag input dete...

Page 105: ...d The flag is set at M2 S1 during execution of the next instruction If a timer carry is generated during M1 thru M3 when executing a 4 machine cycle instruction the timer flag is set during M3 or M4 S...

Page 106: ...ut clock UART mode Independent transmitter and receiver circuits for full duplex communication Double buffer in receiver circuit to provide a 1 frame time margin in processing received data Selection...

Page 107: ...7 T2CON 4 T2CON 5 IOCON 5 SBUF R INPUT SHIFT REGISTER SBUF T MULTIPLEXER RXD P3 0 MULTIPLEXER TXD P3 1 SHIFT CLOCK INTERNAL BUS TIMER COUNTER1 OVERFLOW TIMER COUNTER2 OVERFLOW 1 2OSC Note Internal bus...

Page 108: ...operation modes and enabling disabling data reception storage bits for the ninth data bit transmitted and received during 11 bit frame UART mode and the serial port status flag In addition to specifyi...

Page 109: ...of the data to be sent during 11 bit frame UART mode mode 2 or 3 Receive enable bit Reception is not activated if REN is not set If SM2 is set when in 11 bit frame UART mode mode 2 or 3 and the 9th bi...

Page 110: ...thetransmittingcircuitwheninmode 1 or 3 The timer counter 2 overflow becomes the transmitting circuit baud rate clock source when TCLK is set in mode 1 or 3 And the timer counter 1 overflow becomes th...

Page 111: ...ing baud rate If SMOD is cleared in mode 2 1 2 OSC oscillator frequency divided by 2 divided by 2 becomes the baud rate clock source And if SMOD is set 1 2 OSC becomes the baud rate clock source SMOD...

Page 112: ...de Notethatanoverrunerror is only detected when the data reception conditions set by SM2 have been satisfied Although the SERR flag is set by hardware when a framing or overrun error is generated it i...

Page 113: ...first Two states after commencing the LSB output output of the TXD synchronized clock is commenced This synchronized clock is at level 0 from the latter half of S3 thru to the first halfofS6 andat 1 l...

Page 114: ...INTERNAL SPECIFICATIONS 107 SBUF R INPUT SHIFT REG INTERNAL BUS RI SBUF T START START INTERNAL BUS TI REN SHIFT CLOCK ENABLE TXD RXD WRITE TO SBUF SERIAL PORT INTERRUPT Figure 4 28 Serial port mode 0...

Page 115: ...D2 D3 D4 D5 D6 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 WRITE TO SCON REN RI TXD ALE S4 S5 S6 S1 S2 S3 TERMINATE TRANSMISSION RI S...

Page 116: ...ATIONS 109 Figure 4 30 Serial port mode 0 timing and corresponding basic MSM80C154S MSM83C154S timing XTAL1 ALE OUTPUT READ RXD INPUT TXD SHIFT CLOCK RXD DATA OUTPUT S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S...

Page 117: ...2 1 SMOD 0 B fTC1 SMOD 1 16 1 16 1 where B is the baud rate and fTC1 is the timer counter 1 overflow frequency When timer counter 1 is used as a timer internal clock in auto reload mode mode 2 the bau...

Page 118: ...beginning of the start bit for commence ment of reception When this 1 to 0 RXD change is detected the hexadecimal counter which had been stopped in reset status commences to count up When the hexadec...

Page 119: ...e SERR flag is set at the first M1 S3 after the hexadecimal counter has reached state 10 Note that the previous SBUF R data is preserved Conditions 1 RI 1 2 SM2 0 or SM2 1 and sampled stop bit 1 And i...

Page 120: ...BUF T START START INTERNAL BUS TI RXD SAMPLE LOGIC 1 16 COUTER TXD RXD WRITE TO SBUF SERIAL PORT INTERRUPT REN SM2 RECEIVE DATA NEGLECT LOGIC SERR BAUD RATE CLOCK RCLK RCLK 1 RCLK 0 1 16 COUTER BAUD R...

Page 121: ...1 timing chart D1 WRITE TO SBUF TXD TERMINATE TRANSMISSION TX CLOCK TI D2 D3 D4 D5 D6 RX COUNTER RUN RXD SAMPLE CLOCK LOAD SBUF RXD SHIFT IN CLOCK RI or SERR SET TERMINATE RECEPTION STOP BIT STOP BIT...

Page 122: ...s used as the clock Transmission is commenced when transmit data is written in SBUF The start bit the eight SBUF data bits with the LSB first TB8 and the stop bit are transmitted sequentially from the...

Page 123: ...ti purpose data bit 1 If the above conditions are not satisfied when the hexadecimal counter is in state 10 during the multi purpose data bit interval the received data is disregarded the SBUF RB8 and...

Page 124: ...RI START START SBUF T INTERNAL BUS TI RXD SAMPLE LOGIC 1 16 COUTER TXD RXD WRITE TO SBUF SERIAL PORT INTERRUPT REN SM2 RECEIVE DATA NEGLECT LOGIC SERR BAUD RATE CLOCK 1 16 COUTER BAUD RATE CLOCK SMOD...

Page 125: ...ANSMISSION TX CLOCK TI D2 D3 D4 D5 D6 RX COUNTER RUN RXD SAMPLE CLOCK LOAD SBUF RXD SHIFT IN CLOCK RI or SERR SET TERMINATE RECEPTION STOP BIT STOP BIT M1 S3 TBB D0 D1 D2 D3 D4 D5 D6 RBB D0 M1 S3 STAR...

Page 126: ...ow baud rate is determined by the overflow frequency and SMOD value according to the following equations B fTC1 2 1 SMOD 0 B fTC1 SMOD 1 16 1 16 1 Where B is the baud rate and fTC1 is the timer counte...

Page 127: ...re timer counter 1 must be set so that the period of a single round of the hexadecimal counter is equal to the reception data baud rate The RXD change from 1 to 0 is regarded as the beginning of the s...

Page 128: ...tions are satisfied when the hexadecimal counter is in state 10 during reception of a multi purpose data bit it is assumed that new data is received before processing of the previously received data h...

Page 129: ...S TI RXD SAMPLE LOGIC 1 16 COUTER TXD RXD WRITE TO SBUF SERIAL PORT INTERRUPT REN SM2 RECEIVE DATA NEGLECT LOGIC SERR BAUD RATE CLOCK RCLK RCLK 1 RCLK 0 1 16 COUTER BAUD RATE CLOCK TCLK TCLK 1 TCLK 0...

Page 130: ...SMISSION TX CLOCK TI D2 D3 D4 D5 D6 RX COUNTER RUN RXD SAMPLE CLOCK LOAD SBUF RXD SHIFT IN CLOCK RI or SERR SET TERMINATE RECEPTION STOP BIT STOP BIT M1 S3 TBB D0 D1 D2 D3 D4 D5 D6 RBB D0 M1 S3 START...

Page 131: ...e is shown in Figure 4 37 and the corresponding timing chart is shown in Figure 4 38 FollowingoutputofthelatchpulsefromPX X REN 1 andR1 0 aresetforshiftinof74LS1 65 data MSM80C154S MSM83C154S PX X RXD...

Page 132: ...changed from 0 to 1 and the parallel input is latched This is then followed by REN 1 and RI 0 settings and shift in of 74LS165 data INPUT CONTROL is returned to 0 after the input has been completed S...

Page 133: ...ONTROL PX X INPUT CONTROL RXD TXD 8Q 7Q 6Q 5Q 4Q 3Q 2Q 1Q 8D 7D 6D 5D 4D 3D 2D 1D OC G 74LS373 QHQGQF QEQDQCQBQA CLK CK 74LS164 B A QH H G F E D C B A INHIBIT CK 74LS165 CLOCK SERIAL IN SHIFT LOAD INP...

Page 134: ...INPUT CONTROL INPUT OUTPUT 74LS165 OUTPUT MSM80C154S MSM83C154S OUTPUT In all examples additional multiple bit I O extension is made possible by multiple cascade connections of 74LS164 or 74LS165 Figu...

Page 135: ...nerates address data which ensures that data bit 9 the multi purpose data bit is 1 3 At this stage all slave processors generate interrupts and check whether the received address data has specified it...

Page 136: ...rity register IP When the relevant interrupt conditions are met the respective interrupt address is called and the interrupt routine is commenced The interrupt addresses are listed in Table 4 18 and t...

Page 137: ...3 PI NI EX0 IE 0 PS IP 4 PI NI EX0 IE 0 PT2 IP 5 PI NI EX0 IE 0 EA IE 7 VCC PCT IP 7 VCC RETI GLOBAL ENABLE TCON 7 TF1 TIMER INTERRUPT 1 TCON 3 IE1 EXTERNAL INTERRUPT 1 TCON 5 TF0 TIMER INTERRUPT 0 TC...

Page 138: ...5 4 3 2 1 0 EA ET2 ES ET1 EX1 ET0 EX0 Bit Flag EX0 External interrupt 0 control bit Interrupt enabled when 1 disabled when 0 ET0 Timer interrupt 0 control bit Interrupt enabled when 1 disabled when 0...

Page 139: ...utine set the desired interrupt enable bit in the interrupt enable register IE 0A8H The desired interruptroutineisprocessedwhentheconditionsforthatroutinearemet Multi levelinterrupt processing can thu...

Page 140: ...famain routine program is outlined in Figure 4 45 below This diagram shows the flow chart up to the point of return to the main routine NI Start of non priority interrput Start of non priority interrp...

Page 141: ...routine have to be generated duringtheprocessingofaninterruptroutine setthedesiredinterruptenablebitintheinterrupt enable register IE 0A8H to commence the new interrupt routine Multi level interrupt p...

Page 142: ...t 0 and the interrupt routine with lowest priority is timer interrupt 2 The interrupt level when all priority bits are 0 is 1 level and even if the interrupt conditions for an external interrupt 0 hig...

Page 143: ...s 0 and 1 are level detected by the equivalent circuit shown in Figure 4 47 When the level of the external interrupt pin is 0 at S5 timing the level is latched and the Q output becomes 1 The latched e...

Page 144: ...ect to digital differentiation until the S3 timing signal The RS F F in the next stage is set by the differentiated output signal The external interrupt signal applied to the RS F F is synchronized wi...

Page 145: ...tisfied during execution of ordinary instructions in main routine If interrupt conditions are satisfied during execution of an ordinary instruction which does not manipulate IE or IP in the main routi...

Page 146: ...3 S4 S5 S6 Instruction execution S6 1 0 1 0 M1 M4 M1 or M2 M1 M4 M1 or M2 M1 M2 1 0 Execution of one instruction Execution of one instruction Timer 1 interrput address call Figure 4 49 lnterrupt respo...

Page 147: ...rcuit in the next cycle follow ing completion of the register manipulation instruction If interrupt conditions were met as a result of the re interrupt mask the interrupt address is called in the next...

Page 148: ...ction execution S6 1 0 1 0 M1 or M2 M1 M4 M1 or M2 M1 M2 1 0 Execution of IE or IP manipulation instruction Execution of one instruction Timer 1 interrput address call Figure 4 50 Interrupt response t...

Page 149: ...e following execution of the interrupt routine end instruction RETI and if the next interrupt conditions have been met during execution of a previous interrupt routine the MSM80C154S MSM83C154S calls...

Page 150: ...turning to main routine during continuous interrupt processing S4 S5 S6 S1 S2 S3 XTAL1 ALE Timer flag 1 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 Instruction execution S6 1 0 1 0 M2 M1 M4...

Page 151: ...n to the main routine where an instruction which manipulates the interrupt enable register IE or interrupt priority register IP is executed the MSM80C154S MSM83C154S activates the interrupt mask circu...

Page 152: ...o main routine during continuous interrupt processing S4 S5 S6 S1 S2 S3 XTAL1 ALE Timer flag 1 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 Instruction execution S6 1 0 1 0 M2 M1 or M2 M1 1 0...

Page 153: ...be released CPU start up by CPU resetting interrupt generation and interrupt source signal generation Execution can be recommenced from address 0 resumed from the interrupt address or from the next ad...

Page 154: ...INTERNAL SPECIFICATIONS 147 XTAL 2 XTAL 1 TIMER S I O INTERRUPT CPU CONTROL CLOCK Bit Set SMOD HPD RPD GF1 GF0 PD IDL 7 6 5 4 3 2 1 0 PCON 87H CONTROL Figure 4 53 ldle mode equivalent circuit...

Page 155: ...put Port data output P3 6 WR Port data output Port data output P3 7 RD Port data output Port data output XTAL 2 Oscillator operative Oscillator operative XTAL 1 Oscillator operative Oscillator operati...

Page 156: ...ternal ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 W PCON 1 0 PCON bit 0 1...

Page 157: ...al ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 W PCON 1 0 PCON bit 0 1 0 I...

Page 158: ...the mode can be cancelled by external interrupt 0 or 1 and the INT0 or INT1 pin is set to 0 either level input or edge input 2 If trying to set the software power down mode under the conditions that t...

Page 159: ...152 XTAL 2 XTAL 1 CPU CLOCK Bit Set SMOD HPD RPD GF1 GF0 PD IDL 7 6 5 4 3 2 1 0 CONTROL PCON 87H IOCON 0F8H I O FLOATING Bit Set T32 SERR IZC P3HZ P2HZ P1HZ ALF 7 6 5 4 3 2 1 0 Figure 4 56 Soft power...

Page 160: ...RESET S6 M END PCON5 RPD PDRESET S5 Figure 4 57 Power down cancellation circuit at INTERRUPT level input S4 S2 S3 Q S LR IE0 or 1 PCON5 RPD PDRESET D Q D L S3 D L S5 Q PD INT0 or INT1 W TCON BUS RESET...

Page 161: ...MSM80C154S 83C154S 85C154HVS 154 S3 Q D L Q D R F F1 F F2 S5 T0 or T1 VCC RESET PD F F1 F F2 PCON5 RPD Q S R TF0 or 1 PDRESET RESET TIMER0 1 C Figure 4 59 TIMER0 1 power down cancellation circuit...

Page 162: ...ta output P3 6 WR Port data output Port data output P3 7 RD Port data output Port data output XTAL 2 Oscillator operative Oscillator operative XTAL 1 Oscillator operative Oscillator operative VSS 0 V...

Page 163: ...N PORT 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 W PCON 1 0 PCON bit 1 1 0 SOFT POWER DOWN MODE S6 PORT DATA PORT DATA PD SET CYCLE 1 0 1 0 IOCON bit 0 PORT DATA PORT DATA ALF 0 S1 PORT DATA PORT DATA PORT D...

Page 164: ...ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 M1 XTAL1 1 0 ALE 1 0 PSEN PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 W PCON 1 0 PCON bit 1 1 0 SOFT POWER DOWN MODE S6 PORT DATA PORT DATA FLOATING PD SET CYCLE P...

Page 165: ...Floating Floating Floating External data input External data input External data input External data input External data input External data input External data input External data input Floating Floa...

Page 166: ...chart internal ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 M1 XTAL1 1 0 ALE 1 0 PSEN PORT 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 W PCON 1 0 PCON bit 1 1 0 SOFT POWER DOWN MODE S6 PORT DATA PORT DATA PD SET CYCLE...

Page 167: ...rt external ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 M1 XTAL1 1 0 ALE 1 0 PSEN PORT 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 W PCON 1 0 PCON bit 1 1 0 SOFT POWER DOWN MODE S6 PORT DATA PORT DATA PD SET CYCLE 1 0...

Page 168: ...tatus or set to port output floating status The ports are set to data output status by setting bit 0 ALF of the I O control register IOCON 0F8H to 0 when hard power down mode is activated and to float...

Page 169: ...2 Figure 4 64 Hard power down mode equivalent circuit XTAL 2 XTAL 1 CPU CLOCK Bit Set SMOD HPD RPD GF1 GF0 PD IDL 7 6 5 4 3 2 1 0 CONTROL PCON 87H IOCON 0F8H I O FLOATING Bit Set T32 SERR IZC P3HZ P2H...

Page 170: ...l input P3 6 WR Port data output Port data output P3 7 RD Port data output Port data output XTAL 2 Oscillator operative Oscillator operative XTAL 1 Oscillator operative Oscillator operative VSS 0 V 0...

Page 171: ...ernal ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 M1 XTAL1 1 0 ALE 1 0 PSEN PORT 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 HPDI P3 5 1 0 PCON bit 6 1 0 HARD POWER DOWN MODE S6 PORT DATA PORT DATA HPD SET CYCLE 1 0 1...

Page 172: ...mode S1 S2 S3 S4 S5 S6 M1 or M2 M1 XTAL1 1 0 ALE 1 0 PSEN PORT 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 HPDI P3 5 1 0 PCON bit 6 1 0 HARD POWER DOWN MODE S6 PORT DATA PORT DATA HPD SET CYCLE 1 0 1 0 IOCON...

Page 173: ...ating Floating Floating Floating External data input External data input External data input External data input External data input External data input 0 level input 0 level input Floating Floating F...

Page 174: ...hart internal ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 M1 XTAL1 1 0 ALE 1 0 PSEN PORT 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 6 1 0 HARD POWER DOWN MODE S6 PORT DATA PORT DATA HPD SET CYCLE 1 0 1 0 IOC...

Page 175: ...external ROM mode S1 S2 S3 S4 S5 S6 M1 or M2 M1 XTAL1 1 0 ALE 1 0 PSEN PORT 0 PORT 1 PORT 2 PORT 3 PCON bit 6 1 0 HARD POWER DOWN MODE S6 HPD SET CYCLE 1 0 1 0 IOCON bit 0 ALF 1 S1 HPDI P3 5 1 0 1 0 1...

Page 176: ...odes By generating the respective interrupt source signals the program can be executed from the interrupt address and can also be continued from the next address after the stop address This method can...

Page 177: ...M1 M2 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 0 1 0 RESET 1 0 EXECUTE CYCLE RESET CYCLE M1 M2 CPU R...

Page 178: ...S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE S6 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 0 1 0 RESET 1 0 EXECUTE CYCLE RESET CYCLE CPU RESET CONTROL...

Page 179: ...1 M2 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 1 1 0 RESET 1 0 EXECUTE CYCLE RESET CYCLE M1 M2 CPU RES...

Page 180: ...S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 1 1 0 RESET 1 0 EXECUTE CYCLE RESET CYCLE M1 M2 CPU RESET CONTROL...

Page 181: ...6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 IOCON bit 0 1 0 RESET 1 0 EXECUTE CYCLE RESET CYCLE M1 M2 CPU RESET CONTROL 1 0 PORT...

Page 182: ...S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 IOCON bit 0 1 0 RESET 1 0 EXECUTE CYCLE RESET CYCLE M1 M2 CPU RESET CONTROL 1 0 PORT DATA 1 PORT DA...

Page 183: ...ster IE 0A8H prior to setting CPU power down mode and 0 is set in bit 5 RPD of the power control register PCON 87H All six interrupts can be used to cancel idle mode The interrupt conditions are satis...

Page 184: ...Figure 4 75 Equivalent circuit for DLE and PD mode rancellation by interrupt signal IE0 TCON 1 IE 0 TF0 TCON 5 IE 1 IE1 TCON 3 IE 2 TF1 TCON 7 IE 3 RI TI SCON 0 1 IE 4 EXF2 TF2 T2CON 6 7 IE 5 IE 7 IDL...

Page 185: ...M mode S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 XTAL1 1 0 ALE S6 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 0 1 0 INT0 or INT1 1 0 INTERR...

Page 186: ...4 S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 XTAL1 1 0 ALE S6 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 0 1 0 INT0 or INT1 1 0 INTERRUPT EXECUTE CYCLE...

Page 187: ...e S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 1 0 1 0 EXECUTE CYCLE WASTE CYCLE 1 0 PORT DATA P...

Page 188: ...S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M2 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 1 0 1 0 EXECUTE CYCLE WASTE CYCLE 1 0 PORT DATA PORT DATA SOFT POWER DOW...

Page 189: ...lags in TCON T2CON or SCON clock signals are passed to the CPU control stage and execution is resumed from the next address after the stop address Soft power down mode PD can be cancelled by four diff...

Page 190: ...S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 XTAL1 1 0 ALE S6 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 0 1 0 INT0 or INT1 1 0 INTERRUPT EXECUTE CYCLE W...

Page 191: ...S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M2 XTAL1 1 0 ALE S6 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 PCON bit 0 1 0 INT0 or INT1 1 0 INTERRUPT EXECUTE CYCLE WASTE CYCLE I...

Page 192: ...S2 S3 S4 S5 S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 1 0 1 0 EXECUTE CYCLE WASTE CYCLE 1 0 PORT DATA PORT DATA PORT DATA SOFT POWER DOWN MODE...

Page 193: ...S6 M1 S1 S2 S3 S4 S5 S6 M1 XTAL1 1 0 ALE 1 0 PSEN 1 0 PORT 0 1 0 PORT 1 1 0 PORT 2 1 0 PORT 3 1 0 1 0 1 0 EXECUTE CYCLE WASTE CYCLE 1 0 PORT DATA PORT DATA SOFT POWER DOWN MODE M1 PCON bit 1 INT0 or...

Page 194: ...to 0 level which separates the external RAM and the peripheral circuit electrically to retain data in the external RAM At the same time a hard power down signal is output the T1 pin of the CPU goes fr...

Page 195: ...T1 P3 5 10PF 1000 F 0 1 F 74HC08 74HC02 MSM80C154S 83C154S P0 0 P0 1 P0 2 P0 3 P0 4 P0 5 P0 6 P0 7 ALE P2 0 P2 1 P2 2 P2 6 P2 7 P2 3 P2 4 P2 5 I O control signal 5 1K 200K 10 F 74HC02 5 1K 1K 5 1K 74H...

Page 196: ...CS0 P2 0 P2 1 P2 2 P0 7 P0 6 P0 5 P0 4 P0 3 P0 2 P0 1 P0 0 ALE OE WR VCA D7 D6 D5 D4 D3 D2 D1 D0 L Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 GND V CC SN74LS373 D0 D1 D2 D3 D4 D5 D6 D7 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9A10 W...

Page 197: ...MSM80C154S 83C154S 85C154HVS 190 5 INPUT OUTPUT PORTS...

Page 198: ...INPUT OUTPUT PORTS 191...

Page 199: ...circuit is indicated in Figure 5 2 When operated as an output port port 0 becomes an open drain output port and when operated as an input port 1 should be set in the port 0 latch to put the port 0 pin...

Page 200: ...L BUS N PORT 0 WPO Figure 5 2 Port 0 input Output port equivalent circuit in internal ROM mode PC0 7 RA0 7 ACC0 7 READ INTERNAL BUS N P VCC PORT 0 Figure 5 3 Port 0 equivalent circuit during address a...

Page 201: ...194 PORT0 Accumulator bit Address 1 P0 0 ACC 0 PC RA 0 2 P0 1 ACC 1 PC RA 1 3 P0 2 ACC 2 PC RA 2 4 P0 3 ACC 3 PC RA 3 5 P0 4 ACC 4 PC RA 4 6 P0 5 ACC 5 PC RA 5 7 P0 6 ACC 6 PC RA 6 8 P0 7 ACC 7 PC RA...

Page 202: ...e VCC supply in parallel The quasi bidirectional port input equivalent circuit is outlined in Figure 5 7 To change port 1 from a quasi bidirectional input port to a high impedance input port 1 is set...

Page 203: ...MSM80C154S 83C154S 85C154HVS 196 Q D READ INTERNAL BUS WP1 MODIFY Q D C CONTROL P1 VCC P2 P3 PORT 1 N Figure 5 4 Port 1 internal equivalent circuit...

Page 204: ...S IOH A When accelerator circuit is activated READ N OFF P3 ON R 100k P2 ON R 10k P1 OFF R 500 VCC INTERNAL BUS IOH B When 1 data is held OFF READ N ON P3 R 100k P2 R 10k P1 R 500 VCC INTERNAL BUS IOL...

Page 205: ...Figure 5 6 Quasi bidirectional port accelerator circuit operation time chart S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6 M1 S1 XTAL1 1 0 ALE 1 0 W PORT 1 0 PORT OUT 1 0 P1 2 3TR ON 1 0 CPU BUS 1 0 S2 S6 PSEN...

Page 206: ...rcuit P3 ON R 100k READ N OFF P2 ON R 10k VCC INTERNAL BUS B 1 data input equivalent circuit P3 ON R 100k IIH OFF ON 10k VCC READ N OFF P2 OFF R 10k VCC INTERNAL BUS C 0 data input equivalent circuit...

Page 207: ...COUNTER 2 EXTERNAL CLOCK P1 1 T2EX TIMER COUNTER 2 EXTERNAL CONTROL Table 5 2 Port 1 CPU control pin table Table 5 3 Port 1 pin table PORT1 Accumulator bit 1 P1 0 ACC 0 2 P1 1 ACC 1 3 P1 2 ACC 2 4 P1...

Page 208: ...ata is 1 the 1 data accelerator circuit is activated during output of the data resulting in a higher driving capacity To change port 2 from a quasi bidirectional input port to a high impedance input p...

Page 209: ...Port 2 address output equivalent circuit for external memory Table 5 4 Port 2 pin table PORT2 Accumulator bit Address 1 P2 0 ACC 0 PC RA 8 2 P2 1 ACC 1 PC RA 9 3 P2 2 ACC 2 PC RA 10 4 P2 3 ACC 3 PC RA...

Page 210: ...a quasi bidirectional input port to a high impedance input port 1 is set in bit 3 P3HZ of the I O control register IOCON 0F8H The output driver circuit is thus disconnected from the port pin floating...

Page 211: ...0 P3 3 INT1 EXTERNAL INTERRUPT 1 P3 4 T0 TIMER COUNTER 0 CLOCK P3 5 T1 TIMER COUNTER 1 CLOCK P3 6 WR EXTERNAL DATA MEMORY WRITE STROBE P3 7 RD EXTERNAL DATA MEMORY READ STROBE HPDI HARD POWER DOWN IN...

Page 212: ...mode 1 is set in bit 0 ALF of the I O control register IOCON 0F8H before PD or HPD mode is activated see Figure 5 11 The port output driver is disconnected from the port pins when power down mode is...

Page 213: ...C154HVS 206 Bit Set T32 SERR IZC P3HZ P2HZ P1HZ ALF 7 6 5 4 3 2 1 0 IOCON 0F8H Q D READ INTERNAL BUS W PORT MODIFY P2 10k VCC P3 100k I O N PORT1 2 3 POWER DOWN Flag Figure 5 11 Control circuit for po...

Page 214: ...pull up resistances to the quasi bidirectional input ports Innormaloperations the10kWpull upresistanceisdisconnectedfromtheVCC powersupply when the level of the signal applied to the quasi bidirection...

Page 215: ...tion circuit When the pin level is dropped to 0 the CPU disconnects the 10 kW pull up resistance from the power supply leaving only the 100 kW pull up resistance connected Since the base current IB of...

Page 216: ...INPUT OUTPUT PORTS 209 VCC 10k IB VCC P 100k OUT CPU 1 OUT Figure 5 13 Drive circuit for NPN transistor by level shifter IB VCC OUT CPU 0 OUT Figure 5 14 PNP transistor direct connection drive circuit...

Page 217: ...S6 M1 S1 XTAL1 1 0 ALE 1 0 W PORT 1 0 PORT OUT 1 0 PORT NEW DATA M1 PORT OLD DATA 1M CYCLE OP INC data address DEC data address MOV data address A ORL data address A ANL data address A XRL data addres...

Page 218: ...CLE OP MOV data address data ORL data address data ANL data address data XRL data address data JBC bit address code address POP data address MOV data address Rr MOV data address Rr MOV data address 1...

Page 219: ...used according to the instruction to be used and the other where port latch data uneffected by the external signals is used Instructions which use port latch data are listed below INC data address DE...

Page 220: ...INPUT OUTPUT PORTS 213...

Page 221: ...MSM80C154 83C154 85C154 214 6 ELECTRICAL CHARACTERISTICS...

Page 222: ...ELECTRICAL CHARACTERISTICS 215...

Page 223: ...VCC Ta See below Conditions 2 0 6 2 6 40 85 2 Rating V V C Unit voltage Oscillation fOSC See below 1 24 1 MHz frequency External clock fEXTCLK See below 0 24 MHz operating frequency fOSC 0 Hz Oscilla...

Page 224: ...put Leakage Current PORT 0 loating EA RESET Pull down Resistor Pin Capacitance Power Down Current Symbol VIL VIH VIH1 VOL VOL1 VOH VOH1 IIL IOH ITL ILI RRST CIO IPD Conditions Except XTAL1 EA and RESE...

Page 225: ...0 0 25 0 Maximum Power Supply Current Normal Operation ICC mA VCC Freq 24MHz 4 5V 25 0 5V 29 0 6V 35 0 VCC Freq 1MHz 3MHz 12MHz 16MHz 4V 0 8 1 2 3 1 3 8 5V 1 2 1 7 4 4 5 5 6V 1 6 2 3 5 9 7 3 Maximum P...

Page 226: ...25 VCC 0 1 Parameter Symbol Condition Min Typ Max Unit Input Low Voltage VIL 0 5 V VCC 0 5 Input High Voltage VIH Except XTAL1 EA 0 25 VCC 0 9 V and RESET VCC 0 5 Input High Voltage VIH1 XTAL1 RESET...

Page 227: ...2 VIH VIL 1 2 3 4 VCC VSS INPUT OUTPUT Note 3 V A Note 2 VIH VIL VCC VSS INPUT OUTPUT V Note 1 VCC VSS INPUT OUTPUT Note 3 VIH VIL A A Note 1 Repeated for specified input pins 2 Repeated for specifie...

Page 228: ...g Edge 4tCLCL 100 ns tLLPL Instruction Data Read Time from ALE Falling Edge 1tCLCL 30 ns tLLPL From ALE Falling Edge to PSEN Falling Edge 3tCLCL 35 ns tPLPH PSEN Signal Width 3tCLCL 45 ns tPLIV Instru...

Page 229: ...MSM80C154 83C154 85C154 222 External program memory read cycle tLHLL tAVLL tLLPL tPLPH tLLIV tPLIV tLLAX tAZPL tPXIX tPXIZ tPXAV tAVIV A0 A7 INSTR IN A0 A7 PORT 0 A8 A15 A0 A7 PORT 2 A8 A15 ALE PSEN...

Page 230: ...ng Edge 0 ns tRHDX RAM Data Read Hold Time from RD Signal Rising Edge 2tCLCL 70 ns tRHDZ Data Bus Floating Time from RD Signal Rising Edge 8tCLCL 100 ns tLLDV RAM Data Read Time from ALE Signal Fallin...

Page 231: ...DPL DATA IN PORT 0 P2 0 P2 7 DATA or A8 A15 PCH A8 A15 PCH PORT 2 ALE PSEN A8 A15 PCH PCH A0 A7 PCL INSTR IN A0 A7 PCL tLLAX tAVWL tAZRL tRLDV RD tWHLH tLHLL tLLWL tWLWH tAVLL tWHQX A0 A7 RrorDPL DATA...

Page 232: ...to 85 C Parameter Serial Port Clock Cycle Time Output Data Setup to Clock Rising Edge Output Data Hold After Clock Rising Edge Input Data Hold After Clock Rising Edge Clock Rising Edge to Input Data V...

Page 233: ...MSM80C154 83C154 85C154 226 VALID ALE SHIFT CLOCK INPUT DATA MACHINE CYCLE OUTPUT DATA tXLXL tQVXH tXHQX tXHDV tXHDX VALID VALID VALID VALID VALID VALID VALID...

Page 234: ...measurements are made atVIH logic 1 and VIL 10gic 0 2 Floating VIH VIL VIH VIL VOH VOL VOH VOL Floating The port 0 floating interval is measured from the time the port 0 pin Voltage drops below VIH a...

Page 235: ...meter Oscillator Freq High Time Low Time Rise Time Fall Time Symbol 1 tCLCL tCHCX tCLCX tCLCH tCHCL Min 0 15 15 Max 24 5 5 Unit MHz ns ns ns ns tCHCX tCHCL tCHCX tCLCH tCLCL 0 7VCC 0 2VCC 0 1 VCC 0 5...

Page 236: ...7 DESCRIPTION OF INSTRUCTIONS...

Page 237: ...MSM80C154S 83C154S 85C154HVS 230...

Page 238: ...is a total of 112 instructions classified into the following groups 1 Arithmetic and logic instructions 15 2 Accumulator operation instructions 7 3 Increment decrement instructions 9 4 Logical operat...

Page 239: ...iplication Division X Representation of the contents of X X Representation of the contents addressed by contents of X Symbol denoting immediate data Symbol denoting indirect address Equal sign Not equ...

Page 240: ...R2 data MOV R3 data MOV R4 data MOV R5 data MOV R6 data MOV R7 data SJMP rel AJMP address 11 Page 4 ANL C bit MOVC A A PC DIV AB MOV direct 1 direct 2 MOV direct R0 MOV direct R1 MOV direct R0 MOV dir...

Page 241: ...C OV C A A C direct address AC OV C A A C Rr r 0 or 1 AC OV C A A C data AB A B A quotient B remainder A B When the contents of accumulator bit 0 thru 3 exceed 9 and when the auxiliary carry AC is 1 6...

Page 242: ...mulator operation instructions CLR CPL RL RLC RR RRC SWAP A A A A A A A 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A 0 A A A4 7 A0 3 272 275 349 350 351 352 361 1 1 1 0 0 1 0 0 1 1 1 1 0 1 0 0 0 0 1 0 0 0 1 1 0 0 1...

Page 243: ...r 0 or 1 A A AND Rr r 0 7 A A AND direct address A A AND Rr r 0 or 1 A A AND data direct address direct address AND A direct address direct address AND data A A OR Rr r 0 7 A A OR direct address A A O...

Page 244: ...ress A A XOR Rr r 0 or 1 A A XOR data direct address direct address XOR A direct address direct address XOR data A data Rr data r 0 7 direct address data 337 344 343 368 369 367 366 371 370 314 320 32...

Page 245: ...C OR bit address C C OR bit address C bit address bit address C bit address 1 311 319 273 353 276 260 261 341 342 318 323 354 0 1 1 1 0 1 1 r I7 I6 I5 I4 I3 I2 I1 I0 1 0 0 1 0 0 0 0 I15 I14 I13 I12 I...

Page 246: ...rect address r 0 7 direct address A direct address Rr r 0 7 direct address 1 direct address 2 direct address Rr r 0 or 1 Rr A r 0 or 1 Rr direct address r 0 or 1 A A DPTR PC PC 1 A A PC 277 316 317 31...

Page 247: ...3 Rr0 3 r 0 or 1 SP SP 1 SP direct address direct address SP SP SP 1 PC PC 2 SP SP 1 SP PC0 7 SP SP 1 SP PC8 15 PC0 10 A0 10 PC PC 3 SP SP 1 SP PC0 7 SP SP 1 SP PC8 15 PC0 15 A0 15 PC8 15 SP SP SP 1...

Page 248: ...15 SP SP SP 1 PC0 7 SP SP SP 1 INTERRUPT ENABLE PC PC 2 PC0 10 A0 10 PC0 15 A0 15 PC PC 2 PC PC relative offset PC A DPTR PC PC 3 IF A direct address THEN PC PC relative offset IF A direct address THE...

Page 249: ...tions CJNE CJNE A data rel Rr data rel 3 3 2 2 PC PC 3 IF A data THEN PC PC relative offset IF A data THEN C 1 ELSE C 0 PC PC 3 IF Rr data r 0 7 THEN PC PC relative offset IF A data r 0 7 THEN C 1 ELS...

Page 250: ...offset IF Rr data r 0 or 1 THEN C 1 ELSE C 0 PC PC 2 Rr Rr 1 r 0 7 IF Rr 0 r 0 7 THEN PC PC relative offset PC PC 3 direct address direct address 1 IF direct address 0 THEN PC PC relative offset PC P...

Page 251: ...1 R0 JNC rel 2 2 PC PC 2 IF C 0 THEN PC PC relative offset 0 1 0 1 0 0 0 0 R7 R6 R5 R4 R3 R2 R1 R0 JB bit rel 3 2 PC PC 3 IF bit address 1 THEN PC PC relative offset 0 0 1 0 0 0 0 0 R7 R6 R5 R4 R3 R2...

Page 252: ...tion External memory instructions Other instruction MOVX A Rr A Rr A DPTR Rr A DPTR A PC PC 1 1 1 1 0 0 0 1 r MOVX A DPTR 1 1 1 0 0 0 0 0 MOVX Rr A 1 1 1 1 0 0 1 r MOVX DPTR A 1 1 1 1 0 0 0 0 NOP 1 1...

Page 253: ...escription Byte 1 A7 A6 A5 A4 A3 A2 A1 A0 7 0 Byte 2 PC PC 2 SP SP 1 SP PC0 7 SP SP 1 SP PC8 15 PC0 10 A0 10 C AC F0 RS1 RS0 OV F1 P This instruction stores the program counter value return address in...

Page 254: ...DD A 07H Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 A A data C AC F0 RS1 RS0 OV F1 P An 8 bit immediate data value is added to the accumulator The result is placed in the accumulator a...

Page 255: ...AC F0 RS1 RS0 OV F1 P The data memory location contents addressed by the register r contents are added to the accumulator The result is placed in the accumulator and the flags are updated 0 0 1 0 0 1...

Page 256: ...6 Instruction code Byte 1 A A Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The register r contents are added to the accumulator The result is placed in the accumulator and the flags are updated 0 0 1 0 1 1 1...

Page 257: ...7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 A A data address C AC F0 RS1 RS0 OV F1 P The specified data address contents are added to the accumulator The result is placed in the accumulator and the flags are up...

Page 258: ...on code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 A A C data C AC F0 RS1 RS0 OV F1 P The carry flag is added to the accumulator and an 8 bit immediate data is added to that result The result is placed...

Page 259: ...he carry flag is added to the accumulator and the contents of data memory location addressed by the register r contents are added to the accumulator The result is placed in the accumulator and the fla...

Page 260: ...e 1 A A C Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The carry flag is added to the accumulator and the register r contents are added to the result The result is placed in the accumulator and the flags are...

Page 261: ...a2 a1 a0 7 0 Byte 2 A A C data address C AC F0 RS1 RS0 OV F1 P The carry flag is added to the accumulator and the specified data address contents are added to that result The result is placed in the a...

Page 262: ...Description Byte 1 A7 A6 A5 A4 A3 A2 A1 A0 7 0 Byte 2 PC PC 2 PC0 10 A0 10 C AC F0 RS1 RS0 OV F1 P After an increment the program counter PC0 10 is replaced by 11 bit page address data A0 10 The desti...

Page 263: ...Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 A A AND data C AC F0 RS1 RS0 OV F1 P The logical AND between an 8 bit immediate data value and the accumulator contents is determined The re...

Page 264: ...1 RS0 OV F1 P The logical AND between the accumulator contents and the data memory location contents addressed by the register r contents is determined The result is placed in the accumulator and the...

Page 265: ...ction code Byte 1 A A AND Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The logical AND between the accumulator contents and the register r contents is determined The result is placed in the accumulator and t...

Page 266: ...a5 a4 a3 a2 a1 a0 7 0 Byte 2 A A AND data address C AC F0 RS1 RS0 OV F1 P The logical AND between the accumulator contents and the specified data address contents is determined The result is placed in...

Page 267: ...Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 C C AND bit address C AC F0 RS1 RS0 OV F1 P The logical AND between the carry flag and the specified bit address contents is determined The r...

Page 268: ...3 Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 C C AND bit address C AC F0 RS1 RS0 OV F1 P The logical AND between the carry flag and the complement of specified bit address contents is...

Page 269: ...1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 3 data address data address AND data C AC F0 RS1 RS0 OV F1 P The logical AND between an 8 bit immediate data value and the specified data address contents is determ...

Page 270: ...1 data address data address AND A C AC F0 RS1 RS0 OV F1 P The logical AND between the accumulator and the specified data address contents is determined The result is placed in the specified data addr...

Page 271: ...tive offset IF Rr data r 0 or 1 THEN C 1 ELSE C 0 C AC F0 RS1 RS0 OV F1 P The data memory location contents addressed by the register r contents are compared with an immediate data value Control is sh...

Page 272: ...1 0 1 7 0 After execution 35H 0 0 1 0 1 0 1 1 7 0 35H 0 0 1 0 1 0 1 1 7 0 1 Carry flag 0 Carry flag Program counter 15 8 0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 0 7 0 Program counter 15 8 0 0 0 0 0 0 0 0 1 0 1...

Page 273: ...data THEN PC PC relative offset IF A data THEN C 1 ELSE C 0 C AC F0 RS1 RS0 OV F1 P The accumulator contents are compared with an immediate data value and control is shifted to a relative jump addres...

Page 274: ...xecution Accumulator 0 1 0 1 0 0 0 0 7 0 After execution 1 Carry flag 0 Carry flag Program counter 15 8 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 7 0 Program counter 15 8 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 7 0 0 0...

Page 275: ...EN PC PC relative offset IF A data address THEN C 1 ELSE C 0 C AC F0 RS1 RS0 OV F1 P The accumulator contents are compared with the specified data address contents and control is shifted to a relative...

Page 276: ...fter execution 0 Carry flag 1 Carry flag Program counter 15 8 0 0 0 1 0 0 0 0 1 1 0 1 1 1 0 0 7 0 Program counter 15 8 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 1 7 0 0 1 0 1 0 0 0 0 7 0 Byte 2 0 1 0 0 0 1 0 0 7...

Page 277: ...thru 7 THEN PC PC relative offset IF Rr data r 0 thru 7 THEN C 1 ELSE C 0 C AC F0 RS1 RS0 OV F1 P The register r contents are compared with an immediate data value and control is shifted to a relative...

Page 278: ...0 Before execution Register 4 0 0 0 0 0 0 0 1 7 0 After execution 1 Carry flag 1 Carry flag Program counter 15 8 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 7 0 Program counter 15 8 0 0 0 0 0 1 0 0 0 1 1 1 0 0 1...

Page 279: ...on Number of bytes Number of cycles Flags PSW Description Example CLR A Instruction code Byte 1 A 0 C AC F0 RS1 RS0 OV F1 P The accumulator is cleared to 0 and flag is updated 1 1 1 0 0 1 0 0 7 0 Byte...

Page 280: ...7 0 Instruction code Operation Number of bytes Number of cycles Flags PSW Description Example CLR C Instruction code Byte 1 C 0 C AC F0 RS1 RS0 OV F1 P The carry flag is cleared to 0 1 1 0 0 0 0 1 1...

Page 281: ...of cycles Flags PSW Description Example CLR P1 5 Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 bit address 0 C AC F0 RS1 RS0 OV F1 P The specified bit address content is cleared to 0 1 0...

Page 282: ...ration Number of bytes Number of cycles Flags PSW Description Example CPL A Instruction code Byte 1 A A C AC F0 RS1 RS0 OV F1 P Accumulator data 0 is set to 1 and 1 is set to 0 1 1 1 1 0 1 0 0 7 0 Byt...

Page 283: ...ode Operation Number of bytes Number of cycles Flags PSW Description Example CPL C Instruction code Byte 1 C C C AC F0 RS1 RS0 OV F1 P The carry flag is set to 1 if 0 set to 0 if 1 1 0 1 1 0 0 1 1 7 0...

Page 284: ...s PSW Description Example CLR B 7 Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 bit address bit address C AC F0 RS1 RS0 OV F1 P The specified bit address content is set to 1 if 0 and set...

Page 285: ...number is converted to a normal decimal number When the contents of accumulator bits 0 thru 3 100 digit are greater than 9 or when the auxiliary carry AC is 1 6 is added to accumulator bits 0 thru 3...

Page 286: ...7 0 Before execution Accumulator 0 0 0 1 0 1 0 1 7 0 After execution 0 C 1 C 0 AC 0 AC Accumulator 0 0 1 1 0 0 0 1 7 0 Before execution Accumulator 1 0 0 1 0 1 1 1 7 0 After execution 1 1 1 1 Accumula...

Page 287: ...scription Example DEC R0 Instruction code Byte 1 Rr Rr 1 r 0 or 1 C AC F0 RS1 RS0 OV F1 P The contents of the data memory location addressed by the register r contents are decremented by 1 0 0 0 1 0 1...

Page 288: ...r of bytes Number of cycles Flags PSW Description Example DEC A Instruction code Byte 1 A A 1 C AC F0 RS1 RS0 OV F1 P The accumulator contents are decremented by 1 and the flag is updated 0 0 0 1 0 1...

Page 289: ...n Number of bytes Number of cycles Flags PSW Description Example DEC R7 Instruction code Byte 1 Rr Rr 1 r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The register r contents are decremented by 1 0 0 0 1 1 1 1 1...

Page 290: ...f cycles Flags PSW Description Example DEC 5AH Instruction code Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 data address data address 1 C AC F0 RS1 RS0 OV F1 P The specified data address contents are de...

Page 291: ...ta values are handled as integers without sign The quotient is placed in the accumulator and the remainder in the arithmetic operation register B The carry flag is always cleared and the overflow flag...

Page 292: ...Flags PSW Description Byte 1 R7 R6 R5 R4 R3 R2 R1 R0 7 0 Byte 2 PC PC 2 Rr Rr 1 r 0 thru 7 IF Rr 0 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P The register r contents are decremented by 1 Contr...

Page 293: ...gister 1 0 0 0 0 1 0 0 0 7 0 Before execution Register 1 0 0 0 0 0 1 1 1 7 0 After execution Program counter 15 8 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 1 7 0 Program counter 15 8 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1...

Page 294: ...yte 1 R7 R6 R5 R4 R3 R2 R1 R0 7 0 Byte 3 PC PC 3 data address data address 1 IF data address 0 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P The specified data address contents are decremented by...

Page 295: ...1 0 1 1 7 0 Before execution 57H 0 1 1 0 1 0 1 0 7 0 After execution Program counter 15 8 0 0 0 1 0 0 0 0 1 0 0 1 0 1 0 1 7 0 Program counter 15 8 0 0 0 1 0 0 0 0 0 0 1 1 0 0 1 1 7 0 0 1 0 1 0 1 1 1 7...

Page 296: ...cription Example INC R1 Instruction code Byte 1 Rr Rr 1 r 0 or 1 C AC F0 RS1 RS0 OV F1 P The contents of the data memory location addressed by the register r contents are incremented by 1 0 0 0 0 0 1...

Page 297: ...r of bytes Number of cycles Flags PSW Description Example INC A Instruction code Byte 1 A A 1 C AC F0 RS1 RS0 OV F1 P The accumulator contents are incremented by 1 and the flag is updated 0 0 0 0 0 1...

Page 298: ...of cycles Flags PSW Description Example INC DPTR Instruction code Byte 1 DPTR DPTR 1 C AC F0 RS1 RS0 OV F1 P 16 bit contents od the data pointer DPH DPL are incremented by 1 1 0 1 0 0 0 1 1 7 0 Byte...

Page 299: ...n Number of bytes Number of cycles Flags PSW Description Example INC R5 Instruction code Byte 1 Rr Rr 1 r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The register r contents are incremented by 1 0 0 0 0 1 1 0 1...

Page 300: ...Flags PSW Description Example INC P1 Instruction code Data address Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 data address data address 1 C AC F0 RS1 RS0 OV F1 P The specified data address contents are...

Page 301: ...es Number of cycles Flags PSW Description Byte 1 R7 R6 R5 R4 R3 R2 R1 R0 7 0 Byte 3 PC PC 3 IF bit address 1 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P Control is shifted to a relative jump ad...

Page 302: ...0 0 7 0 Before execution 34 0 1 0 0 1 0 0 0 7 0 After execution Program counter 15 8 0 0 0 0 1 0 0 1 0 0 0 0 0 0 1 1 7 0 Program counter 15 8 0 0 0 0 1 0 0 1 0 1 0 1 0 0 0 0 7 0 0 0 0 1 0 0 1 1 7 0 B...

Page 303: ...les Flags PSW Description Byte 1 R7 R6 R5 R4 R3 R2 R1 R0 7 0 Byte 3 PC PC 3 IF bit address 1 THEN bit address 0 PC PC relative offset C AC F0 RS1 RS0 OV F1 P Control is shifted to a relative jump addr...

Page 304: ...0 1 0 7 0 Before execution 46 1 0 1 0 1 0 0 0 7 0 After execution Program counter 15 8 0 0 0 0 0 0 0 1 0 0 1 1 0 1 1 0 7 0 Program counter 15 8 0 0 0 0 0 0 0 0 1 1 0 1 1 1 0 0 7 0 0 1 1 1 0 0 0 1 7 0...

Page 305: ...rations Number of bytes Number of cycles Flags PSW Description Byte 1 PC PC 2 IF C 1 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P Control is shifted to a relative jump address if the carry flag...

Page 306: ...1 Before execution After execution Program counter 15 8 0 0 0 1 0 1 1 0 1 1 0 1 1 1 1 0 7 0 Program counter 15 8 0 0 0 1 0 1 1 0 1 1 1 1 0 1 0 1 7 0 0 0 0 1 0 1 0 1 7 0 Byte 2 LOC 16DC 16DE 16F5 OBJ...

Page 307: ...F1 P The accumulator contents are added to the data pointer con tents and the resulting sum is placed in the program counter 1 2 0 1 1 1 0 0 1 1 7 0 Byte 1 Before execution After execution DPH 15 8 0...

Page 308: ...f bytes Number of cycles Flags PSW Description Byte 1 R7 R6 R5 R4 R3 R2 R1 R0 7 0 Byte 3 PC PC 3 IF bit address 0 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P Control is shifted to a relative ju...

Page 309: ...0 1 1 1 7 0 Before execution 37 0 0 1 1 0 1 1 1 7 0 After execution Program counter 15 8 0 0 0 0 1 0 0 0 0 0 1 1 0 1 0 1 7 0 Program counter 15 8 0 0 0 0 1 0 0 0 0 1 0 1 1 0 1 0 7 0 0 0 1 0 1 0 1 1 7...

Page 310: ...perations Number of bytes Number of cycles Flags PSW Description Byte 1 PC PC 2 IF C 0 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P Control is shifted to a relative jump address if the carry fla...

Page 311: ...0 7 0 Byte 1 Before execution After execution Program counter 15 8 0 0 0 0 1 0 0 0 0 0 1 1 0 1 0 1 7 0 Program counter 15 8 0 0 0 0 1 0 0 0 0 1 0 1 1 0 0 1 7 0 0 0 1 0 0 0 1 0 7 0 Byte 2 LOC 0835 085...

Page 312: ...ns Number of bytes Number of cycles Flags PSW Description Byte 1 PC PC 2 IF A 0 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P Control is shifted to a relative jump address if the accumulator cont...

Page 313: ...ore execution After execution Program counter 15 8 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 7 0 Program counter 15 8 0 0 0 0 0 0 0 1 0 0 1 0 1 1 1 0 7 0 0 0 1 1 0 0 0 0 7 0 Byte 2 LOC 00FC 012E OBJ 7030 FB SOU...

Page 314: ...ns Number of bytes Number of cycles Flags PSW Description Byte 1 PC PC 2 IF A 0 THEN PC PC relative offset C AC F0 RS1 RS0 OV F1 P Control is shifted to a relative jump address if the accumulator cont...

Page 315: ...fore execution After execution Program counter 15 8 0 0 0 0 0 0 0 0 1 1 0 0 1 0 1 0 7 0 Program counter 15 8 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 1 7 0 1 1 0 0 1 1 0 1 7 0 Byte 2 LOC 0099 00CA OBJ 04 60CD SO...

Page 316: ...A12 A11 A10 A9 A8 7 0 Byte 2 PC PC 3 SP SP 1 SP PC0 7 SP SP 1 SP PC8 15 PC0 15 A0 15 C AC F0 RS1 RS0 OV F1 P The contents of the program counter return address are pushed in the stack following an inc...

Page 317: ...er of bytes Number of cycles Flags PSW Description Byte 1 A15 A14 A13 A12 A11 A10 A9 A8 7 0 Byte 2 PC0 15 A0 15 C AC F0 RS1 RS0 OV F1 P Jump address A0 15 specified by operand are placed in the progra...

Page 318: ...R1 0AAH Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 Rr data r 0 or 1 C AC F0 RS1 RS0 OV F1 P An 8 bit immediate data value is copied to the data memory location addressed by the registe...

Page 319: ...Instruction code Byte 1 Rr A r 0 or 1 C AC F0 RS1 RS0 OV F1 P The accumulator contents are copied to the data memory location addressed by the register r contents 1 1 1 1 0 1 1 0 7 0 Byte 1 Register 0...

Page 320: ...5 a4 a3 a2 a1 a0 7 0 Byte 2 Rr data address r 0 or 1 C AC F0 RS1 RS0 OV F1 P The specified data address contents are copied to the data memory location addressed by the register r contents 1 0 1 0 0 1...

Page 321: ...es Flags PSW Description Example MOV A 05H Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 A data C AC F0 RS1 RS0 OV F1 P An 8 bit immediate data is copied to the accumulator and the flag i...

Page 322: ...code Byte 1 A Rr r 0 or 1 C AC F0 RS1 RS0 OV F1 P The data memory location contents addressed by the register r contents are copied to the accumulator and the flag is updated 1 1 1 0 0 1 1 0 7 0 Byte...

Page 323: ...SW Description Example MOV A R6 Instruction code Byte 1 A Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The register r contents are copied to the accumulator and the flag is updated 1 1 1 0 1 1 1 0 7 0 Byte 1...

Page 324: ...OV A P1 Instruction code Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 A data address C AC F0 RS1 RS0 OV F1 P The specified data address contents are copied to the accumu lator and the flag is updated 1 1...

Page 325: ...gs PSW Description Example MOV C P3 4 Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 C bit address C AC F0 RS1 RS0 OV F1 P The specified bit address content is copied to the carry flag 1 0...

Page 326: ...ion code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 3 DPTR data DPH I8 15 DPL I0 7 C AC F0 RS1 RS0 OV F1 P A 16 bit immediate data value is copied to the data pointer DPH DPL 3 2 I15 I14 I13 I12 I11 I10...

Page 327: ...cycles Flags PSW Description Example MOV R5 0AH Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 Rr data r 0 thru 7 C AC F0 RS1 RS0 OV F1 P An 8 bit immediate data value is copied to the reg...

Page 328: ...cles Flags PSW Description Example MOV R1 A Instruction code Byte 1 Rr A r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The accumulator contents are copied to the register r 1 1 1 1 1 0 0 1 7 0 Byte 1 Register 1...

Page 329: ...n Example MOV R0 5AH Instruction code Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 Rr data address r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The specified data address contents are copied to the register r 1 0...

Page 330: ...gs PSW Description Example MOV P1 4 C Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 bit address C C AC F0 RS1 RS0 OV F1 P The carry flag content is copied to the specified bit address 1 0...

Page 331: ...on Example MOV TCON 50H Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 3 data address data C AC F0 RS1 RS0 OV F1 P An 8 bit immediate data value is copied to the specified data address 0 1 1...

Page 332: ...a4 a3 a2 a1 a0 7 0 Byte 2 data address Rr r 0 or 1 C AC F0 RS1 RS0 OV F1 P The data memory location contents addressed by the register r contents are copied to the specified data address 1 0 0 0 0 1...

Page 333: ...ion Example MOV P3 A Instruction code Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 data address A C AC F0 RS1 RS0 OV F1 P The accumulator contents are copied to the specified data address 1 1 1 1 0 1 0 1...

Page 334: ...Example MOV 6BH R2 Instruction code Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 data address Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The register r contents are copied to the specified data address 1 0 0...

Page 335: ...a4 1 a3 1 a2 1 a1 1 a0 1 7 0 Byte 3 data address 1 data address 2 C AC F0 RS1 RS0 OV F1 P The source data address data address 2 contents are copied to the destination data address data address 1 1 0...

Page 336: ...umulator con tents and after temporary storage of the sum in the program counter the ROM data contents specified by the program counter are stored in the accumulator The program counter contents are t...

Page 337: ...he accumulator contents and after temporary storage of the sum in the program counter the ROM data contents specified by the program counter are stored in the accumulator The program counter contents...

Page 338: ...struction code Byte 1 DPTR A C AC F0 RS1 RS0 OV F1 P The accumulator contents are stored in external data memory RAM addressed by the data pointer contents 1 2 1 1 1 1 0 0 0 0 7 0 Byte 1 Before execut...

Page 339: ...le MOVX R0 A Instruction code Byte 1 Rr A r 0 or 1 C AC F0 RS1 RS0 OV F1 P The accumulator contents are stored in external data memory addressed by the register r contents 1 2 1 1 1 1 0 0 1 0 7 0 Byte...

Page 340: ...n code Byte 1 A DPTR C AC F0 RS1 RS0 OV F1 P External data memory RAM contents addressed by the data pointer are stored in the accumulator and the flag is updated 1 2 1 1 1 0 0 0 0 0 7 0 Byte 1 Before...

Page 341: ...nstruction code Byte 1 A Rr r 0 or 1 C AC F0 RS1 RS0 OV F1 P External data memory RAM contents addressed by the register r contents are stored in the accumulator and the flag is updated 1 2 1 1 1 0 0...

Page 342: ...ts The operand is always handled as an integer without sign The lower order byte of the result is placed in the accumulator and the higher order byte is placed in the arithmetic operation register B T...

Page 343: ...0 0 0 0 0 7 0 Instruction code Operation Number of bytes Number of cycles Flags PSW Description Byte 1 PC PC 1 C AC F0 RS1 RS0 OV F1 P The program counter is incremented by 1 without any other change...

Page 344: ...Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 A A OR data C AC F0 RS1 RS0 OV F1 P The logical OR between an 8 bit immediate data value and the accumulator contents is determined The resu...

Page 345: ...0 RS1 RS0 OV F1 P The logical OR between the accumulator contents and the data memory location contents addressed by the register r contents is determined The result is placed in the accumulator and t...

Page 346: ...ction code Byte 1 A A OR Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The logical OR between the accumulator contents and the register r contents is determined The result is placed in the accumulator and the...

Page 347: ...7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 A A OR data address C AC F0 RS1 RS0 OV F1 P The logical OR between the accumulator contents and the specified data address contents is determined The result is placed...

Page 348: ...Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 C C OR bit address C AC F0 RS1 RS0 OV F1 P The logical OR between the carry flag and the specified bit address content is determined The resu...

Page 349: ...C 25H 5 Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 C C OR bit address C AC F0 RS1 RS0 OV F1 P The logical OR between the carry flag and the complement of specified bit address content...

Page 350: ...1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 3 data address data address OR data C AC F0 RS1 RS0 OV F1 P The logical OR between an 8 bit immediate data value and the specified data address contents is determin...

Page 351: ...e 1 data address data address OR A C AC F0 RS1 RS0 OV F1 P The logical OR between the accumulator and the specified data address contents is determined The result is placed in the specified data addre...

Page 352: ...ess SP SP SP 1 C AC F0 RS1 RS0 OV F1 P Stack contents addressed by the stack pointer are popped in the specified data address and the stack pointer is decremented by 1 1 1 0 1 0 0 0 0 7 0 Byte 1 Accum...

Page 353: ...2 SP SP 1 SP data address C AC F0 RS1 RS0 OV F1 P The stack pointer is incremented by 1 and the specified data address contents are pushed in the stack addressed by the stack pointer 1 1 0 0 0 0 0 0...

Page 354: ...F1 P The stack contents addressed by the stack pointer are popped in the upper order 8 thru 15 of the program counter and the stack pointer is decremented by 1 Then the stack contents addressed by th...

Page 355: ...ess the priority interrupt And once processing of this interrupt is commenced no other interrupts can be processed until the RETI instruction is executed Stack contents addressed by the stack pointer...

Page 356: ...s Flags PSW Description Example RL A Instruction code Byte 1 C AC F0 RS1 RS0 OV F1 P All accumulator bits are shifted by one bit to the left The MSB bit 7 is shifted to the LSB bit position bit 0 0 0...

Page 357: ...e 1 C AC F0 RS1 RS0 OV F1 P The accumulator and the carry flag are connected and all bits are shifted by one bit to the left The carry flag is shifted to the accumulator LSB bit 0 and the accumulator...

Page 358: ...s Flags PSW Description Example RR A Instruction code Byte 1 C AC F0 RS1 RS0 OV F1 P All accumulator bits are shifted by one bit to the right The LSB bit 0 is shifted to the MSB bit position bit 7 0 0...

Page 359: ...e 1 C AC F0 RS1 RS0 OV F1 P The accumulator and the carry flag are connected and all bits are shifted by one bit to the right The carry flag is shifted to the accumulator MSB bit 7 and the accumulator...

Page 360: ...7 0 Instruction code Operation Number of bytes Number of cycles Flags PSW Description Example SETB C Instruction code Byte 1 C 1 C AC F0 RS1 RS0 OV F1 P The carry flag is cleared to 1 1 1 0 1 0 0 1 1...

Page 361: ...r of cycles Flags PSW Description Example SETB IE 7 Instruction code Byte 1 b7 b6 b5 b4 b3 b2 b1 b0 7 0 Byte 2 bit address 1 C AC F0 RS1 RS0 OV F1 P The specified bit address content is set to 1 1 1 0...

Page 362: ...RS1 RS0 OV F1 P Relative offset jump data is added subtracted to from the program counter contents following an increment The program counter contents are updated and control is then shifted to the up...

Page 363: ...le 1 0 0 0 0 0 0 0 7 0 Byte 1 Before execution After execution Program counter 15 8 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 7 0 Program counter 15 8 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 7 0 0 0 0 1 0 0 0 0 7 0 Byt...

Page 364: ...I0 7 0 Byte 2 A A C data C AC F0 RS1 RS0 OV F1 P The carry flag content and an immediate data value are substracted from the accumulator contents The result is placed in the accumulator and the flags...

Page 365: ...ata memory location contents addressed by the register r contents are substracted from the accumulator contents The result is placed in the accumulator and the flags are updated 1 0 0 1 0 1 1 0 7 0 By...

Page 366: ...OV F1 P The carry flag content and the register r contents are substracted from the accumulator contents The result is placed in the accumulator and the flags are updated 1 0 0 1 1 1 1 1 7 0 Byte 1 1...

Page 367: ...ess C AC F0 RS1 RS0 OV F1 P The carry flag contents and the specified data address contents are substracted from the accumulator contents The result is placed in the accumulator and the flags are upda...

Page 368: ...PSW Description Example SWAP A Instruction code Byte 1 A4 7 A0 3 C AC F0 RS1 RS0 OV F1 P The contents of the four higher order bits 4 thru 7 of the accumulator are exchanged with the contents of the...

Page 369: ...code Byte 1 A Rr r 0 or 1 C AC F0 RS1 RS0 OV F1 P The accumulator contents are exchanged with the data memory location contents addressed by the register r and the flag is updated 1 1 0 0 0 1 1 0 7 0...

Page 370: ...escription Example XCH A R5 Instruction code Byte 1 A Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The accumulator contents are exchanged with the register r contents and the flag is updated 1 1 0 0 1 1 0 1...

Page 371: ...CH A 7AH Instruction code Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 A data address C AC F0 RS1 RS0 OV F1 P The accumulator contents are exchanged with the specified data address contents and the flag...

Page 372: ...C AC F0 RS1 RS0 OV F1 P The lower order bits 0 thru 3 of the accumulator contents are exchanged with contents of the lower order bits 0 thru 3 of the data memory location addressed by the register r...

Page 373: ...15H Instruction code Byte 1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 2 A A XOR data C AC F0 RS1 RS0 OV F1 P The exclusive OR operation is executed between an immediate data value and the accumulator contents...

Page 374: ...0 RS1 RS0 OV F1 P The exclusive OR operation is executed between the accumulator contents and the data memory location contents addressed by the register r contents The result is placed in the accumul...

Page 375: ...nstruction code Byte 1 A A XOR Rr r 0 thru 7 C AC F0 RS1 RS0 OV F1 P The exclusive OR between the accumulator contents and the register r contents is determined The result is stored in the accumulator...

Page 376: ...1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 A A XOR data address C AC F0 RS1 RS0 OV F1 P The exclusive OR between the accumulator contents and the specified data address contents is determined The result is...

Page 377: ...1 I7 I6 I5 I4 I3 I2 I1 I0 7 0 Byte 3 data address data address XOR data C AC F0 RS1 RS0 OV F1 P The exclusive OR between an immediate data value and the specified data address contents is determined T...

Page 378: ...Byte 1 a7 a6 a5 a4 a3 a2 a1 a0 7 0 Byte 2 data address data address XOR A C AC F0 RS1 RS0 OV F1 P The exclusive OR between the accumulator and the specified data address contents is determined The re...

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