upd43256b Renesas Electronics Corporation., upd43256b Datasheet - Page 16

• Manufacturer Part Number: upd43256b
• Description: 256k-bit Cmos Static Ram 32k-word By 8-bit
• Manufacturer: Renesas Electronics Corporation.

Write Cycle Timing Chart 2 (/CS Controlled)
Cautions 1. /CS or /WE should be fixed to high level during address transition.
Remark
16
Address (Input)
2. When I/O pins are in the output state, therefore the input signals must not be applied to
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)
the output.
High impedance
t
AS
Data Sheet M10770EJEV0DS
t
AW
t
WC
t
WP
t
CW
t
DW
Data in
t
t
WR
DH
μ
impedance
PD43256B
High