UPD70F3218 Datasheet, PDF (700/884 Pages) NEC – 32-Bit Single-Chip Microcontrollers

CHAPTER 26 FLASH MEMORY (SINGLE POWER)
(b) Malfunction of other device
When the dedicated flash programmer (output or input) is connected to a serial interface pin (input or
output) that is connected to another device (input), the signal is output to the other device, causing the
device to malfunction. To avoid this, isolate the connection to the other device.
Figure 26-13. Malfunction of Other Device
V850ES/KJ1
Pin
Dedicated flash programmer
connection pin
Other device
Input pin
In the flash memory programming mode, if the signal the V850ES/KJ1
outputs affects the other device, isolate the signal on the other device side.
V850ES/KJ1
Pin
Dedicated flash programmer
connection pin
Other device
Input pin
In the flash memory programming mode, if the signal the dedicated flash
programmer outputs affects the other device, isolate the signal on the other
device side.
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User’s Manual U16889EJ1V0UD