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IDT71342SA_05 Datasheet, PDF (1/14 Pages) Integrated Device Technology – HIGH SPEED 4K X 8 DUAL-PORT STATIC RAM WITH SEMAPHORE | |||
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HIGH SPEED
4K X 8 DUAL-PORT
STATIC RAM
WITH SEMAPHORE
IDT71342SA/LA
Features
â High-speed access
â Commercial: 20/25/35/45/55/70ns (max.)
â Industrial: 25/35/55ns (max.)
â Low-power operation
â IDT71342SA
Active: 700mW (typ.)
Standby: 5mW (typ.)
â IDT71342LA
Active: 700mW (typ.)
Standby: 1mW (typ.)
â Fully asynchronous operation from either port
â Full on-chip hardware support of semaphore signalling be-
tween ports
â Battery backup operationâ2V data retention (LA only)
â TTL-compatible; single 5V (±10%) power supply
â Available in plastic packages
â Industrial temperature range (â40°C to +85°C) is available
for selected speeds
Functional Block Diagram
R/WL
CEL
OEL
I/O0L- I/O7L
I/O
CONTROL
I/O
CONTROL
R/WR
CER
OER
I/O0R - I/O7R
SEML
A0L- A11L
MEMORY
ARRAY
SEMAPHORE
LOGIC
ADDRESS
DECODER
ADDRESS
DECODER
SEMR
A0R- A11R
2721 drw 01
1
©2000 Integrated Device Technology, Inc.
JANUARY 2001
DSC 2621/12
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