Fujitsu F2MCTM-16LX Hardware Manual page 576

CHAPTER 25 EXAMPLES OF MB90F362/T(S), MB90F367/T(S) SERIAL PROGRAMMING CONNECTION
• Even if the SIN1, SOT1, and SCK1 pins are used for the user system, the control circuit shown in the
figure below is required in the same way that it is for P83. (The /TICS signal of the flash
microcontroller programmer can be used to disconnect the user circuit during serial programming.)
AF220/AF210/AF120/AF110
write control pin
AF220/AF210/AF120/AF110
/TICS pin
• Connect the AF220/AF210/AF120/AF110 while the user power is off.
• When the programming power is supplied from the AF220/AF210/AF120/AF110, be careful not to
short-circuit the user power supply.
560
Figure 25.3-2 Control Circuit
10kΩ
User
MB90F362/T(S),
MB90F367/T(S)
Write control pin