Fujitsu MB91260B Series Hardware Manual page 448

■ Pins Used for Fujitsu Standard Serial Onboard Writing
Pin
MD2, MD1, MD0 Mode pin
P44, P45 Writing program start pin
INIT Reset pin
SIN0 Serial data input pin
SOT0 Serial data output pin
SCK0 Serial clock input pin
V
Power voltage supply pin
CC
V
GND pin
SS
Notes:
• To use the P44, P45, SIN0, SOT0, and SCK0 pins within the user system as well, the control
circuit shown in the following figure is required.
(Using the flash microcontroller programmer's /TICS signal, the user circuit can be disconnected
in serial programming mode.)
• Connect with AF200 under the power-off state of the user power supply.
Function
Control to set the flash serial programming mode.
Flash serial programming mode: MD2, MD1, MD0=1, 0, 0
Reference: Single-chip mode: MD2, MD1, MD0=0, 0, 0
Set "L" level to P44, and "H" level to P45.
Use UART ch.0 resource as clock synchronous mode.
Supply programming voltage from the user system. When connecting,
do not short with power supply of the user side.
Must be shared with GND of the flash microcontroller programmer.
AF220/AF210/
AF120/AF110
write control pin
AF220/AF210/
AF120/AF110
/TICS pin
CHAPTER 18 SERIAL PROGRAMMING CONNECTION
Description
–
MB91F264B
write control pin
User circuit
433