UPD43256BGU-85L NEC, UPD43256BGU-85L Datasheet - Page 14

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UPD43256BGU-85L

Manufacturer Part Number
UPD43256BGU-85L
Description
IC'S
Manufacturer
NEC
Datasheet

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Write Cycle Timing Chart 2 (CS Controlled)
14
Cautions 1. CS or WE should be fixed to high level during address transition.
Remark Write operation is done during the overlap time of a low level CS and a low level WE.
Address (Input)
WE (Input)
CS (Input)
I/O (Input)
2. When I/O pins are in the output state, do not apply to the I/O pins signals that are opposite
in phase with output signals.
High impedance
t
AS
t
t
AW
WP
t
WC
t
CW
t
DW
Data In
t
t
DH
WR
impedance
High
PD43256B

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