CHAPTER 19 FLASH MEMORY
User’s Manual U17446EJ3V1UD
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Figure 19-8. Signal Collision (RESET Pin)
RESET
Dedicated flash memory programmer
connection signal
Reset signal generator
Signal collision
Output pin
In the flash memory programming mode, the signal output by the reset signal
generator collides with the signal output by the dedicated flash memory
programmer. Therefore, isolate the signal of the reset signal generator.
78K0S/KB1+
19.6.3 Port pins
When the flash memory programming mode is set, all the pins not used for flash memory programming enter the
same status as that immediately after reset. If external devices connected to the ports do not recognize the port
status immediately after reset, the port pin must be connected to V
DD
or V
SS
via a resistor.
The state of the pins in the self programming mode is the same as that in the HALT mode.
19.6.4 Power supply
Connect the V
DD
pin to V
DD
of the flash memory programmer, and the V
SS
pin to V
SS
of the flash memory
programmer.
Supply the same other power supplies (AV
REF
and AV
SS
) as those in the normal operation mode.