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MCU_PORT

The

MCU_PORT

provides access to the peripheral features and I/O lines of the HC12 as

follows:

1 2

3 4

5 6

7 8

/XIRQ, PE0

9 10

/DBE, PE7

VFP

11 12

/LSTRB

PG6

13 14

PG7

PG4

15 16

PG5

PG2

17 18

PG3

PG0

19 20

PG1

PH6

21 22

PH7

PH4

23 24

PH5

PH2

25 26

PH3

PH0

27 28

PH1

PS0 / RXD0

29 30

PS1 / TXD0

PS2

/ RXD1

31 32

PS3 / TXD1

PS4

33 34

PS5

PS6

35 36

PS7

PCAN6

37 38

PCAN7

PCAN4

39 40

PCAN5

PCAN2

41 42

PCAN3

PCAN0

43 44

PCAN1

PT0

45 46

PT1

PT2

47 48

PT3

PT4

49 50

PT5

PT6

51 52

PT7

PP6

53 54

PP7

PP4

55 56

PP5

PP2

57 58

PP3

PP0

59 60

PP1

D0 – D7

Low Byte of the Data Bus in Wide Expanded

Mode. Port B in Single Chip Mode.

/XIRQ

XIRQ interrupt input .

VFP

Programming voltage, 12v, when CONFIG switch

position 5 is on.

/LSTRB

LSTRB (PE3) output indicates 8 bit bus access.

Should be enabled in software for bus use.

PP0 – PP7

Port P I/O or PWM port.

PT0 – PT7

Port T I/O or Timer port.

PS0 – PS7

Port S I/O or Serial Port lines.

PG0 – PG7

Port G I/O or Key wakeup pins.

PH0 – PH7

Port H I/O or Key wakeup pins.

Also used by the KEYPAD Port.

RXD / TXD

Serial Port (SCI) receive and transmit pins.

PCAN0 – PCAN7

CAN I/O lines.

CAN_PORT

GND

CAN-H

CAN-L

+5V

The CAN_PORT connector provides an interface to the MSCAN12 on
the microcontroller. This port provides a CAN transceiver device. See
the schematic drawing and the MC68HC912D60 data sheet for
information on using this peripheral.

RxCAN1-3 can be added to supply CAN port bus terminations as required (see schematic).

Содержание CME-12D60

Страница 1: ... 2000 2813 Industrial Ln Garland TX 75041 972 926 9303 FAX 972 926 6063 email Gary axman com web http www axman com xiom anufacturing CME 12D60 Development Board for Motorola 68HC912D60 Microcontroller ...

Страница 2: ...ication 7 Programming Flash EEPROM 8 MEMORY MAP 9 CONFIG SWITCH 10 JUMPERS 11 MON SEL JUMPER 11 PG_PULL PH_PULL JUMPERS 11 JP1 Oscillator Select JUMPER 11 PORTS AND CONNECTORS 12 LCD_PORT 12 KEYPAD 12 MCU_PORT 13 CAN_PORT 13 COM1 14 COM2 14 ANALOG PORT 14 BUS_PORT 15 BDM IN 15 TROUBLESHOOTING 16 TABLES 18 TABLE 1 LCD Command Codes 18 TABLE 2 LCD Character Codes 18 TABLE 3 Mon12 Monitor Commands 19...

Страница 3: ...is board Board Startup Follow these steps to connect and power on the board This assumes you re using the provided AxIDE utility installed in the previous section or a similar communications terminal program on your PC If you re using a different terminal program than the one provided set it s parameters to 9600 baud N 8 1 1 Make certain the CONFIG SWITCH is set as follows 1 2 3 4 5 6 7 8 ON ON ON...

Страница 4: ...Software Development Software development on the CME12B32 can be performed using either the Mon12 monitor utility installed in EPROM sockets U6 U7 a third party debugger NoICE CodeWarrior etc or a Background Debug Module BDM connected to the BDM IN connector Any of these tools can be used to assist in creating and debugging your program stored in RAM see Memory Map After satisfactory operation run...

Страница 5: ...elopment board s use of Memory and Addressing when writing source code so you can locate your code at valid addresses For example when in debug mode you should put your program CODE in External RAM In assembly language you do this with ORG statements in your source code Any lines following an ORG statement will begin at that ORG location which is the first number following the word ORG for example...

Страница 6: ...You must select your board from the pull down menu first or it may not build correctly DO NOT use long path names 8 characters The free assembler is an old DOS tool that does not recognize them If there are no errors in your source code 2 output files will be created HELLO S19 a Motorola S Record file that can be programmed into memory HELLO LST a common listing file which shows the relationship b...

Страница 7: ... prompt again Type GO 1000 This tells Mon12 to execute the program at address 1000 which is the start of our test program 5 If everything is working properly you should see the message Hello World echoed back to your terminal screen Press RESET to return to the monitor 6 If you do not get this message see the TROUBLESHOOTING section in this manual You can modify the hello program to display other ...

Страница 8: ...wered on org fffe reset vector fdb START 3 Re Assemble HELLO ASM as described in the Assembling Source Code section 4 Select Program from the AxIDE menu and follow the message prompts When prompted for a file name enter the new HELLO S19 file 5 Set the CONFIG SWITCH positions 1 5 all ON The red VPP light should come on 6 Press the RESET button on the board before clicking OK When prompted to Erase...

Страница 9: ...DF CS4 BC0 BCF CS3 BB0 BBF CS2 BA0 BAF CS1 B90 B9F CS0 B80 B8F 9FF 800 Internal Registers see note 1 below See 68HC912D60 Technical Reference Manual 7FF 000 Internal RAM On Chip 1 The Internal Register base address is relocated from 000 to 800 on startup by the debug utilities Mon12 and NoICE To preserve this memory map you must also do this in your software when booting from flash To do this load...

Страница 10: ...PE6 3 EXT External Memory enable 1 PORT A B Ext Bus 4 MON Monitor Memory enable 2 N A 5 VPP Flash VPP voltage enable N A 6 RXD0 COM1 Serial Port RXD0 input enable PS0 RXD0 7 RXD1 COM2 Serial Port RXD1 input enable PS3 RXD1 8 CAN Port RX enable PCAN0 1 Enables memory bus operation for access to board memory Expanded bus must be on for proper operation 2 Enables monitor EPROM s in memory map at 0xC0...

Страница 11: ...d Disabling of the internal PLL and external clock oscillator X1 Default configuration is XCLK position The PLL is disabled in this position and the oscillator is provided by X1 external clock PLL Enables PLL crystal oscillator see below XCLK Disables PLL crystal oscillator R1 should be installed default To enable PLL clock do the following 1 Remove R1 on the bottom of the board to isolate the X1 ...

Страница 12: ...ister BF1 LCD Vee is supplied by U13 and is adjusted by the CONTRAST Potentiometer adjustable resistor See the file KLCD12D6 ASM for an example program using this LCD connector J3 LCD3 2 1 LCD2 4 3 LCD4 Additional lines can be used as enables for larger panels and are mapped as LCD2 BF4 BF5 LCD4 BFC BFD LCD3 BF8 BF9 KEYPAD 1 PH0 2 PH1 3 PH2 4 PH3 5 PH4 6 PH5 7 PH6 8 PH7 The KEYPAD connector is a p...

Страница 13: ...e Chip Mode XIRQ XIRQ interrupt input VFP Programming voltage 12v when CONFIG switch position 5 is on LSTRB LSTRB PE3 output indicates 8 bit bus access Should be enabled in software for bus use PP0 PP7 Port P I O or PWM port PT0 PT7 Port T I O or Timer port PS0 PS7 Port S I O or Serial Port lines PG0 PG7 Port G I O or Key wakeup pins PH0 PH7 Port H I O or Key wakeup pins Also used by the KEYPAD Po...

Страница 14: ...ignaling levels This connector supports a standard IDC ribbon cable to DB9 socket Pins 1 2 and 7 are connected for default handshake standards Pins 4 and 6 are connected for default handshake standards ANALOG PORT The ANALOG port provides access to the Port AD0 and Port AD1 Analog to Digital input lines of the HC912D60 as follows PAD0 1 2 PAD10 PAD1 3 4 PAD11 PAD2 5 6 PAD12 PAD3 7 8 PAD13 PAD4 9 1...

Страница 15: ... Enable signal Active Low Valid with ECLK high and R W low IRQ HC12 IRQ PE1 Interrupt Input RW HC12 Read Write PE2 control signal E HC12 ECLK PE4 bus clock signal Stretch should be enabled in software P SEL Selects Peripheral area register following space 8 bits wide J2 RESET HC12 active low RESET signal A14 1 2 A15 MODA PE5 3 4 MODB PE6 GND 5 6 5V BDM IN The BDM IN port is a 6 pin header compatib...

Страница 16: ...that your communications port is working by substituting a known good serial device or by doing a loop back diagnostic 2 Verify the jumpers on the board and the CONFIG switch settings are correct 3 Verify the power source You should measure approximately 9 volts between the GND and 9V test point pads on the board 4 If no voltage is found verify the wall plug connections to 115VAC outlet and the po...

Страница 17: ...G switch changes the memory map If debugging under Mon12 make sure you re not over writing RAM used by it If you re running in a multi tasking environment such as Windows close all programs in the background to be certain no serial conflict occurs Code Execution Make sure the CONFIG SWITCH is set for the proper mode CONFIG switch 3 must be ON to access the external bus LCD display etc even if exec...

Страница 18: ... 40us Display on Cursor and Cursor Blink off 0C 40us Display and Cursor on Cursor Blink off 0E 40us Display Cursor and Cursor Blink on 0F 40us Cursor Display Shift nondestructive move Cursor shift left 10 40us Cursor shift right 14 40us Display shift left 18 40us Display shift right 1C 40us Display Function default 2x40 size 3C 40us Character Generator Ram Address set 40 7F 40us Display Ram Addres...

Страница 19: ...odify Memory Bytes CR Examine Modify next location or Examine Modify same location or Examine Modify previous location Exit Modify Memory command MOVE StartAddress EndAddress DestAddress Move a block of memory RD Display all CPU registers RM Modify CPU Register Contents STOPAT Address Trace until address T count Trace count instructions 1 Mon12 uses internal RAM space from 600 700 DO NOT use this ...

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