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TMP86FS64FG Datasheet(PDF) 206 Page - Toshiba Semiconductor

Part # TMP86FS64FG
Description  8 Bit Microcontroller
PDF  252 Pages
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TMP86FS64FG Datasheet(HTML) 206 Page - Toshiba Semiconductor

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Page 194
20. Serial PROM Mode
20.3 Serial PROM Mode Setting
TMP86FS64FG
20.3 Serial PROM Mode Setting
20.3.1 Serial PROM Mode Control Pins
To execute on-board programming, activate the serial PROM mode. Table 20-2 shows pin setting to activate
the serial PROM mode.
Note: The BOOT pin is shared with the UART communication pin (RXD2 pin) in the serial PROM mode. This pin is used as UART
communication pin after activating serial PROM mode
20.3.2 Pin Function
In the serial PROM mode, TXD2 (P45) and RXD2 (P44) are used as a serial interface pin.
Note 1: During on-board programming with other parts mounted on a user board, be careful no to affect these communication
control pins.
Note 2: Operating range of high frequency in serial PROM mode is 2 MHz to 16 MHz.
Table 20-2 Serial PROM Mode Setting
Pin
Setting
TEST pin
High
BOOT/RXD2 pin
High
RESET
pin
Table 20-3 Pin Function in the Serial PROM Mode
Pin Name
(Serial PROM Mode)
Input/
Output
Function
Pin Name
(MCU Mode)
TXD2
Output
Serial data output
(Note 1)
P45
BOOT/RXD2
Input/Input
Serial PROM mode control/Serial data input
P44
RESET
Input
Serial PROM mode control
RESET
TEST
Input
Fixed to high
TEST
VDD, AVDD
Power
supply
4.5 to 5.5 V
VSS, AVSS
Power
supply
0 V
VAREF
Power
supply
Leave open or apply input reference voltage.
I/O ports except
P45, P44
I/O
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 invalid.) To
make the port inputs valid, set the pin of the SPCR register to “1” by the RAM loader control pro-
gram.
XIN
Input
Self-oscillate with an oscillator.
(Note 2)
XOUT
Output



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