Figure 20-6: Malfunction Of Other Input Pins - NEC V850E/CA1 ATOMIC Preliminary User's Manual

(2) Malfunction of the other device
When connecting a dedicated flash writer (output or input) to a serial interface pin (input or output)
connected to another device (input), the signal output to the other device may cause the device to
malfunction. To avoid this, isolate the connection to the other device or make the setting so that the
input signal to the other device is ignored.
µPD70F3123
µPD70F3123
Chapter 20 Flash Memory (µPD70F3123)

Figure 20-6: Malfunction of Other Input Pins

Output pin
In the flash memory programming mode, if the signal that
the µPD70F3123 outputs affects the other device, isolate
the signal on the other device side.
Input pin
In the flash memory programming mode, if the signal that
the dedicated flash writer outputs affects the other device,
isolate the signal on the other device side.
Preliminary User's Manual U14913EE1V0UM00
Flash writer
connection pin
The other device
Input pin
Flash writer
connection pin
The other device
Input pin
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