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22. Serial PROM Mode
22.3 Serial PROM Mode Setting
TMP89FM42
RA002
22.3 Serial PROM Mode Setting
22.3.1 Serial PROM mode control pins
To execute on-board programming, activate the serial PROM mode. Table 22-2 shows the pin setting used to
activate the serial PROM mode.
Note: Before you activate the serial PROM mode, you must set the RXD0/SI0/P21 and TXD0/SO0/P20 pins to high (H) level by
using a pull-up resistor.
Note 1: If other parts are mounted on a user board, they may interfere with data being communicated through these communica-
tion pins during on-board programming. It is recommended that these parts be somehow isolated to prevent the pins from
being affected.
Table 22-2 Serial PROM Mode Setting
Pin
Setting
RXD0 / SI0 / P21 pin
H level
TXD0 / SO0 / P20 pin
H level
MODE,
RESET
pin
Table 22-3 Pin Functions in Serial PROM Mode
Pin name
(in serial PROM mode)
Input/out-
put
Function
Pin name (in MCU mode)
TXD0 / SO0
Output
Serial PROM mode control/serial data output
(See note 1)
TXD0 / SO0 / P20
RXD0 / SI0
Input
Serial PROM mode control/serial data input
RXD0 / SI0 / P21
RESET
Input
Serial PROM mode control
RESET
MODE
Input
Serial PROM mode control
MODE
SCLK0
Input
Serial clock input (if SIO is used)
These ports are in the high-impedance state in the
serial PROM mode. If the UART is used, the port input
is physically fixed to a specified input level in order to
prevent a penetration current. To enable the port input,
the SPCR<PIN1> must be set to "1" by operating the
RAM loader control program.
SCLK0
VDD
Power
supply
4.5 V to 5.5 V
VAREF / AVDD
Power
supply
Connect to VDD.
VSS
Power
supply
0 V
Input/output port other than
RXD0 and TXD0
Input/out-
put
These ports are in the high-impedance state in the serial PROM mode. The port input is physically
fixed to a specified input level in order to prevent a penetration current (the port input is disabled). To
enable the port input, the SPCR<PIN0> must be set to "1" by operating the RAM loader control pro-
gram.
XIN
Input
Connect a resonator to make these pins self-oscillate.
XOUT
Output
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......