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Integrated Device Technology Electronic Components Datasheet

IDT71322L Datasheet

CMOS Dual-Port RAM 16K

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FEATURES:
• High-speed access
-Military: 55/70/90/100ns (max.)
-Commercial: 45/55170/90ns (max.)
• Low-power operation
-IDT71322S
Active: 325mW (typ.)
Standby: 5mW (typ.)
-IDT71322L
Active: 325mW (typ.)
Standby: 1mW (typ.)
• Fully asynchronous operation from either port
• Full on-chip hardware support of semaphore signalling
between ports
• Battery backup operation - 2V data retention
• TTL compatible, single 5V ± 10% power supply
• Military product 100% screened to MIL-STD-883, Class B
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION:
The IDT71322 is an extremely high-speed 2K x 8 dual-port
static RAM with full on-chip hardware support of semaphore
signalling between the two ports.
the IDT71322 provides two independent ports with separate
control, address and 1/0 pins that permit independent, asynchro-
nous access for reads and writes to any 10Gation in memory. It is
the user's responsibility to ensure data integrity when simul-
taneously accessing the same memory location from both ports.
To assist in arbitrating between ports, a fully independent
semaphore logic block is provided. An automatic power down
feature controlled by CE and SEM permits the on-chip circuitry
of each port to enter a very low standby power mode.
Fabricated using IDT's CEMOS'· high-performance tech-
nology, this device typically operates on only 325mW of power at
maximum access times as fast as 45ns. Low-power (L) versions
offer battery backup data retention capability with each port
typically consuming 200/lW from a 2V battery.
The IDT71322 is packaged in either a 48-pin sidebraze or
plastic DIPor'52-pin LCC, with the military devices available 100%
processed in compliance to the test methods of MIL-STD-883,
Method 5004.
A10l - - - - H - - - ,
A7l------~t-~
I/OOl ----I--Lr""lf-rl.----'~
I/07L --------+.-1
r--~f----- A10R
.--++-------- A7R
t-4-+-------- I/OOR
L-____~HL___t--+.------1I07R
A6l ---------,~
Aol----+i
k:--------- A6R
.....' - - - - - - AOR
I/O Ol-7l
AOl-2l
I/OOR-7R
AOR-2R
CEl - - - -___-tSEMAPHORE . . - - - - CE R
SEMl
LOGIC..
SEMR
OEl
R/Vh
.. OER
RiWR
CEMOS is a trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
Cl1988 Integrated Device Technology, Inc.
2-51
SRD71322-OO1
JULY 1986
Printed in U.S.A.


Integrated Device Technology Electronic Components Datasheet

IDT71322L Datasheet

CMOS Dual-Port RAM 16K

No Preview Available !

IDT71322S/L CMOS DUAL-PORT
RAMS 16K (2K x a-BIT) WITH SEMAPHORE
PIN CONFIGURATIONS
MILITARY AND COMMERCIAL TEMPERATURE RANGES
DIP
TOP VIEW
SRD7132NXl2
LCC
TOP VIEW
2-52


Part Number IDT71322L
Description CMOS Dual-Port RAM 16K
Maker IDT
Total Page 2 Pages
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