tmp86fh46bng TOSHIBA Semiconductor CORPORATION, tmp86fh46bng Datasheet - Page 170

• Manufacturer Part Number: tmp86fh46bng
• Description: 8 Bit Microcontroller Tlcs-870/c Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

15.3
Serial PROM Mode Setting
15.3
15.3.1
15.3.2
Table 15-3 Pin Function in the Serial PROM Mode
TXD
BOOT/RXD
RESET
TEST
VDD, AVDD
VSS, AVSS
VAREF
I/O ports except
P03, P02
XIN
XOUT
(Serial PROM Mode)
Note:The BOOT pin is shared with the UART communication pin (RXD pin) in the serial PROM mode. This pin is
Note 1: During on-board programming with other parts mounted on a user board, be careful no to affect these communica-
Note 2: Operating range of high frequency in serial PROM mode is 2 MHz to 16 MHz.
Serial PROM Mode Setting
vate the serial PROM mode.
Pin Name
To execute on-board programming, activate the serial PROM mode. Table 15-2 shows pin setting to acti-
In the serial PROM mode, TXD (P03) and RXD (P02) are used as a serial interface pin.
used as UART communication pin after activating serial PROM mode
Serial PROM Mode Control Pins
Pin Function
tion control pins.
Output
Input/In-
put
Input
Input
Power
supply
Power
supply
Power
supply
I/O
Input
Output
Output
Input/
Table 15-2 Serial PROM Mode Setting
Serial data output
Serial PROM mode control/Serial data input
Serial PROM mode control
Fixed to high
4.5 to 5.5 V
0 V
Leave open or apply input reference voltage.
These ports are in the high-impedance state in the serial PROM mode. The input level is fixed
to the port inputs with a hardware feature to prevent overlap current. (The port inputs are inva-
lid.) To make the port inputs valid, set the pin of the SPCR register to “1” by the RAM loader con-
trol program.
Self-oscillate with an oscillator.
BOOT/RXD pin
RESET pin
TEST pin
Pin
Page 152
Function
Setting
High
High
(Note 1)
P03
P02
RESET
TEST
TMP86FH46BNG
(MCU Mode)
Pin Name
(Note 2)