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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
operations will not be performed correctly. Therefore, do not input signals other than the reset signal from the
dedicated flash programmer.
V850E/MA1
RESET
16.5.4 NMI pin
Do not change the signal input 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
If MODE0 is set as a high-level or low-level input and MODE1 is set as a high-level input, a write voltage (7.8 V) is
applied to the MODE2/V
PP
mode.
16.5.6 Port pins
When the flash memory programming mode is set, all the port pins except the pins that communicate with the
dedicated flash programmer become output high-impedance.
recommended connection of unused pins (refer to 2.4 Pin I/O Circuits and Recommended Connection of Unused
Pins).
16.5.7 Other signal pins
Connect X1 and X2 in the same status as in the normal operation mode.
16.5.8 Power supply
Supply the power (V
, V
DD
Connect V
and GND of the dedicated flash programmer to V
DD
provided with a power supply monitoring function.)
FLASH MEMORY ( µ µ µ µ PD70F3107A)
CHAPTER 16
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.
pin and when reset is released, these pins change to the flash memory programming
, AV
, AV
, AV
, CV
SS
DD
REF
SS
User's Manual U14359EJ4V0UM
Dedicated flash programmer connection pin
Reset signal generator
Output pin
These pins must be connected according to the
, and CV
) the same as when in normal operation mode.
DD
SS
and V
. (V
of the dedicated flash programmer is
DD
SS
DD
517
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