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µPD23C64340, 23C64380

Data Sheet M16335EJ4V0DS

Cautions on power application

To ensure normal operation, always apply power using /CE following the procedure shown below.

1) Input a high level to /CE during and after power application.

2) Hold the high level input to /CE for 200 ns or longer (wait time).

3) Start normal operation after the wait time has elapsed.

Power Application Timing Chart 1 (When /CE is made high at power application)

Wait time

200 ns or longer

Normal operation

/CE (Input)

VCC

Power Application Timing Chart 2 (When /CE is made high after power application)

Wait time

200 ns or longer

Normal operation

/CE (Input)

VCC

Caution Other signals can be either high or low during the wait time.