IDT7099S
HIGH-SPEED
4K x 9 SYNCHRONOUS
DUAL-PORT RAM
Integrated Device Technology, Inc.
FEATURES:
DESCRIPTION:
• High-speed clock-to-data output times
— Military: 20/25/30ns (max.)
— Commercial: 15/20/25ns (max.)
• Low-power operation
The IDT7099 is a high-speed 4K x 9 bit synchronous Dual-
Port RAM. The memory array is based on Dual-Port memory
cells toallowsimultaneousaccessfrombothports. Registers
on control, data, and address inputs provide low set-up and
hold times. The timing latitude provided by this approach
allow systems to be designed with very short realized cycle
times. With an input data register, this device has been
optimized for applications having unidirectional data flow or
bi-directionaldataflowinbursts. Changingdatadirectionfrom
— IDT7099S
Active: 900 mW (typ.)
Standby: 50 mW (typ.)
• Architecture based on Dual-Port RAM cells
— Allows full simultaneous access from both ports
— Independent bit/byte Read and Write inputs for control reading to writing normally requires one dead cycle.
functions
• Synchronous operation
— 4ns setup to clock, 1ns hold on all control, data, and
address inputs
— Data input, address, and control registers
— Fast 15ns clock to data out
These Dual-Ports typically operate on only 900mW of
power at maximum high-speed clock-to-data output times as
fast as 15ns. An automatic power down feature, controlled
by CE,permitstheon-chipcircuitryofeachport toenteravery
low standby power mode.
The IDT7099 is packaged in a 68-pin PGA, 68-pin PLCC,
and a 80-pin TQFP. Military grade product is manufactured in
compliance with the latest revision of MIL-STD-883, Class B,
making it ideally suited to military temperature applications
demanding the highest level of performance and reliability.
— 20ns cycle times, 50MHz operation
• Clock enable feature
• Guaranteed data output hold times
• Available in 68-pin PGA, 68-pin PLCC, and 80-pin TQFP
• Military product compliant to MIL-STD-883, Class B
• Industrial temperature range (–40°C to +85°C) is avail-
able, tested to military electrical specifications
FUNCTIONAL BLOCK DIAGRAM
I/O8L
I/O0-7L
I/O8R
I/O0-7R
WRITE
LOGIC
WRITE
LOGIC
MEMOR
MEMORY
Y
ARRAY
ARRAY
SENSE
AMPS
SENSE
AMPS
DECODER DECODER
BIT OE
BYTE OE
CLK
CLKEN
R
BIT OE
BYTE OE
CLK
CLKEN
L
REG
en
REG
en
L
R
L
R
R
Write
Control
Logic
Write
Control
Logic
BIT R/W
BYTE R/W
CE
L
BIT R/W
BYTE R/W
CE
R
R
L
REG
REG
R
L
A0L-A11L
A0R-A11R
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The IDT logo is a registered trademark of Integrated Device Technology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
OCTOBER 1996
©1996 Integrated Device Technology, Inc.
For latest information contact IDT’s web site at www.idt.com or fax-on-demand at 408-492-8391.
DSC-3007/3
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