edi88257ca White Electronic Designs Corporation, edi88257ca Datasheet - Page 4

• Manufacturer Part Number: edi88257ca
• Description: 256kx8 Monolithic Sram
• Manufacturer: White Electronic Designs Corporation

White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.
May 2000
Rev. 2
ADDRESS
DATA I/O
White Electronic Designs
READ CYCLE 1 (WE# HIGH; OE#, CS# LOW)
t
ADDRESS 1
AVQV
t
AVAV
FIGURE 3 – WRITE CYCLE - WE# CONTROLLED
FIGURE 2 – TIMING WAVEFORM - READ CYCLE
FIGURE 4 – WRITE CYCLE - CS# CONTROLLED
DATA OUT
ADDRESS
DATA OUT
DATA IN
ADDRESS
DATA 1
DATA IN
t
WE#
ADDRESS 2
CS#
AVQX
WE#
CS#
t
AVWL
t
WRITE CYCLE 1, WE# CONTROLLED
AVEL
DATA 2
WRITE CYCLE 2, CS# CONTROLLED
t
AVWH
t
WLQZ
t
AVEH
t
ELWH
t
HIGH Z
4
AVAV
t
t
t
t
ELEH
WLEH
AVAV
WLWH
DATA OUT
ADDRESS
t
DVEH
t
CS#
OE#
DVWH
DATA VALID
HIGH Z
DATA VALID
White Electronic Designs Corporation • [phone] •www.whiteedc.com
t
WHQX
t
t
t
t
WHDX
WHAX
EHAX
EHDX
t
READ CYCLE 2 (WE# HIGH)
ELQX
t
GLQX
t
t
t
ELQV
GLQV
AVQV
t
AVAV
EDI88257CA
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t
GHQZ
EHQZ