UPD43256BGW-70X-9JL NEC [NEC], UPD43256BGW-70X-9JL Datasheet - Page 13

• Manufacturer Part Number: UPD43256BGW-70X-9JL
• Description: 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT EXTENDED TEMPERATURE OPERATION
• Manufacturer: NEC [NEC]

Write Cycle Timing Chart 2 (/CS Controlled)
Cautions 1. /CS or /WE should be fixed to high level during address transition.
Remark
Address (Input)
2. When I/O pins are in the output state, do not apply to the I/O pins signals that are
Write operation is done during the overlap time of a low level /CS and a low level /WE.
/WE (Input)
/CS (Input)
I/O (Input)
opposite in phase with output signals.
High impedance
t
AS
Data Sheet M11012EJ4V0DS
t
AW
t
WC
t
WP
t
CW
t
DW
Data in
t
t
WR
DH
PD43256B-X
impedance
High
13