Reset Pin; Port Pins (Including Nmi); Other Signal Pins - NEC V850E/RS1 User Manual

21.6.4 RESET pin

When the reset signal of the dedicated flash programmer is connected to the RESET pin connected to
a reset signal generator on board, a signal conflict occurs. To avoid this signal conflict, isolate the con-
nection with the reset signal generator.
If a reset signal is input from the user system in flash memory programming mode, the programming
operation is not performed correctly. Do not input a reset signal other than that from the dedicated flash
programmer.

21.6.5 Port pins (including NMI)

All the port pins, including the pin connected to the dedicated flash programmer, go into an output high-
impedance state in the flash memory programming mode. If there is a problem such as that the external
device connected to a port prohibits the output high-impedance state, connect the port to VDD or VSS
via a resistor.

21.6.6 Other signal pins

Connect X1, and X2 pins in the same status as in the normal operation mode.
21.6.7 Power supply
Supply the same power to the supply power pins (V
as in the normal operation mode.
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Chapter 21 Flash Memory
Figure 21-10: Signal Conflict (RESET Pin)
Conflict of signals
RESET
DD0
User's Manual U16702EE3V2UD00
Dedicated flash programmer
connection pin
Reset signal generator
Output pin
, V , V , V BV , BV
DD1 SS0 SS1, DD
, AV , AV )
SS SS REF0