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•
Even if the SIN4, SOT4, and SCK4 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 P00. The /TICS signal of the flash microcontroller
programmer can be used to disconnect the user circuit during serial programming.
•
Connect the AF220/AF210/AF120/AF110 while the user power is off.
Figure 29.2-2 Connecting User Circuitry (Detail)
AF220/AF210/
AF120/AF110
write control pin
AF220/AF210/
AF120/AF110
/TICS pin
CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION
10k
User circuit
MB90F394H
write control pin
597
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