TMP86C909XB Toshiba, TMP86C909XB Datasheet - Page 157

• Manufacturer Part Number: TMP86C909XB
• Description: EMULATION CHIP FOR TMP86F SDIP
• Manufacturer: Toshiba

Specifications of TMP86C909XB

• Accessory Type: Adapter
• For Use With/related Products: TMP86F SDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

15.3 Serial PROM Mode Setting
15.3 Serial PROM Mode Setting
Table 15-3 Pin Function in the Serial PROM Mode
15.3.1 Serial PROM Mode Control Pins
15.3.2 Pin Function
TXD0
BOOT/RXD0
RESET
TEST
VDD
VSS
I/O ports except
P03, P02
XIN
XOUT
Note: The BOOT pin is shared with the UART communication pin (RXD0 pin) in the serial PROM mode. This pin is used as UART
Note 1: During on-board programming with other parts mounted on a user board, be careful no to affect these communication
Note 2: Operating range of high frequency in serial PROM mode is 2 MHz to 16 MHz.
(Serial PROM Mode)
the serial PROM mode.
Pin Name
To execute on-board programming, activate the serial PROM mode. Table 15-2 shows pin setting to activate
communication pin after activating serial PROM mode
In the serial PROM mode, TXD0 (P03) and RXD0 (P02) are used as a serial interface pin.
control pins.
Output
Input/Input
Input
Input
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
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.
Self-oscillate with an oscillator.
BOOT/RXD0 pin
RESET
TEST pin
Pin
pin
Page 146
Function
Setting
High
High
(Note 1)
P03
P02
RESET
TEST
(MCU Mode)
Pin Name
TMP86F409NG
(Note 2)