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16.5.3 RESET pin
When connecting the reset signals of the dedicated flash programmer to the RESET pin, which is connected, to the
reset signal generator on-board, a conflict of signals occurs. To avoid the conflict of signals, isolate the connection to
the reset signal generator.
When the reset signal is input from the user system in flash memory programming mode, the programming
operation will not be performed correctly. Therefore, do not input signals other than the reset signals from the
dedicated flash programmer.
V850E/IA1
RESET
16.5.4 NMI pin
Do not change the input signal to the NMI pin in flash memory programming mode. If it is changed in flash memory
programming mode, programming may not be performed correctly.
16.5.5 MODE0 to MODE2 pins
To shift to the flash memory programming mode, set MODE0 to high-level or low-level input, MODE1 to high-level
input, and MODE2 to low-level input, apply the writing voltage (7.8 V) to the V
16.5.6 Port pins
When the flash memory programming mode is set, all the port pins except the pins which communicate with the
dedicated flash programmer become output high-impedance status. Nothing need be done to these port pins. If
problems such as disabling output high-impedance status should occur to the external devices connected to the ports,
connect them to V
or V
DD5
SS5
16.5.7 Other signal pins
Connect X1 and X2 to the same status as in the normal operation mode.
The amplitude is 3.3 V.
CHAPTER 16 FLASH MEMORY ( µ µ µ µ PD70F3116)
Figure 16-8. Conflict of Signals (RESET Pin)
Conflict of signals
In the flash memory programming mode, the signal
the reset signal generator outputs conflicts with the
signal the dedicated flash programmer outputs.
Therefore, isolate the signals on the reset signal
generator side.
via resistors.
User's Manual U14492EJ3V0UD
Dedicated flash programmer connection pin
Reset signal generator
Output pin
pin, and release reset.
PP
735
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