CIRCUIT TECHNOLOGY
www.aeroflex.com
eroflex Circuit Technology - Advanced Multichip Modules © SCD1660 REV D 5/21/01
Features
■ 4 Low Power CMOS 512K x 8 SRAMs in one MCM
■ Factory configured as 512K x 32; User configurable as 1M x 16 or 2M x 8
■ Input and Output TTL & CMOS Compatible Design
■ Fast 17,20,25,35,45,55ns Access Times
■ Full Commercial, Industrial and Military (-55°C to +125°C)
Temperature Range
■ MIL-PRF-38534 Compliant MCMs Available
■ +5 V Power Supply
■ Available in two Surface Mount Packages, and two PGA Type Package
● 68–Lead, Low Profile CQFP(F1), 1.56"SQ x .140"max
● 68–Lead, Dual-Cavity CQFP(F2), 0.88"SQ x .20"max
(.18 max thickness available, contact factory for details)
(Drops into the 68 Lead JEDEC .99"SQ CQFJ footprint)
● 68–Lead, Single-Cavity CQFP (F18), .94"SQ x .140"max
(Drops into the 68
Lead JEDEC .99"SQ CQFJ footprint)
● 66 Pin, 1.38" x 1.38" x .245" PGA Type, Aeroflex code# "P1"
● 66 Pin, 1.09" x 1.09" x .185" PGA Type, With Shoulder, Aeroflex code# "P7"
■ Internal Decoupling Capacitors
■ DESC SMD# 5962–94611 Released (F1,F2,F18,P1,P7)
512Kx8 512Kx8 512Kx8 512Kx8
CE4
OE
A0 – A18
I/O0-7 I/O8-15 I/O16-23 I/O24-31
8888
CE3
WE
CE1CE2
Block Diagram – PGA Type Package (P1,P7) & CQFP (F2,F18)
512Kx8 512Kx8 512Kx8 512Kx8
CE4
OE
A0 – A18
I/O0-7 I/O8-15 I/O16-23 I/O24-31
8888
CE3WE4
WE3
WE2
WE1CE1CE2
Block Diagram – CQFP(F1)
Pin Description
I/O0-31 Data I/O
A0–18 Address Inputs
WE1–4 Write Enables
CE1–4 Chip Enables
OE Output Enable
Vcc Power Supply
GND Ground
NC Not Connected
Pin Description
I/O0-31 Data I/O
A0–18 Address Inputs
WE Write Enable
CE1–4 Chip Enables
OE Output Enable
Vcc Power Supply
GND Ground
NC Not Connected
General Description
The ACT–S512K32 is a High
Speed, 16 megabit CMOS
SRAM Multichip Module
(MCM) designed for full
temperature range industrial,
military, or space, mass
memory and fast cache
applications.
The MCM can be organized
as a 512K x 32 bit, 1M x 16 bit
or 2M x 8 bit device and is
input and output TTL
compatible. Writing is executed
when the write enable (WE)
and chip enable (CE) inputs
are low and output enable (OE)
input is high. Reading is
accomplished when WE is high
and CE and OE are both low.
Access time grades of 17ns,
20ns, 25ns, 35ns, 45ns and
55ns maximum are standard
high speed versions.
The +5 Volt power supply
version is standard and +3.3
Volt lower power model is a
future optional product.
The products are designed
for operation over the
temperature range of -55°C to
+125°C and under the full
military environment. DESC
Standard Military Drawing
(SMD) numbers are released.
The ACT-S512K32 is
manufactured in Aeroflex’s
80,000 square foot
MIL-PRF-38534 certified
facility in Plainview, N.Y.
ACT–S512K32 High Speed
16 Megabit SRAM Multichip Module