UPD23C32080AL NEC, UPD23C32080AL Datasheet - Page 11

• Manufacturer Part Number: UPD23C32080AL
• Description: (UPD23C32040AL / UPD23C32080AL) 32M-BIT MASK-PROGRAMMABLE ROM
• Manufacturer: NEC

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.
Caution Other signals can be either high or low during the wait time.
Power Application Timing Chart 2 (When /CE is made high after power application)
Power Application Timing Chart 1 (When /CE is made high at power application)
/CE (Input)
/CE (Input)
V
V
CC
CC
Data Sheet M15772EJ3V0DS
200 ns or longer
Wait time
200 ns or longer
Wait time
µ µ µ µ PD23C32040AL, 23C32080AL
Normal operation
Normal operation
11