IC61SP12832 Datasheet, PDF (2/16 Pages) Integrated Circuit Solution Inc – 128K x 32 Pipelined SyncBurst SRAM

IC61SP12832
IC61SP12836
128K x 32, 128K x 36 SYNCHRONOUS
PIPELINED STATIC RAM
FEATURES
• Internal self-timed write cycle
• Individual Byte Write Control and Global Write
• Clock controlled, registered address, data and
control
• Pentium™ or linear burst sequence control
using MODE input
• Three chip enables for simple depth expansion
and address pipelining
• Common data inputs and data outputs
• 100-Pin TQFP (JEDEC LQFP) and
119-pin PBGA package
• Single +3.3V, +10%, –5% power supply
• Power-down snooze mode
DESCRIPTION
The ICSI IC61SP12832,IC61SP12836 are high-speed, low-
power synchronous static RAM designed to provide a burstable,
high-performance, secondary cache for the Pentium™, 680X0™,
and PowerPC™ microprocessors. It is organized as 131,072
words by 32 bits, fabricated with ICSI's advanced CMOS
technology. The device integrates a 2-bit burst counter, high-
speed SRAM core, and high-drive capability outputs into a
single monolithic circuit. All synchronous inputs pass through
registers controlled by a positive-edge-triggered single clock
input.
Write cycles are internally self-timed and are initiated by the
rising edge of the clock input. Write cycles can be from one to
four bytes wide as controlled by the write control inputs.
Separate byte enables allow individual bytes to be written.
BW1 controls DQa, BW2 controls DQb, BW3 controls DQc,
BW4 controls DQd, conditioned by BWE being LOW. A LOW
on GW input would cause all bytes to be written.
Bursts can be initiated with either ADSP (Address Status
Processor) or ADSC (Address Status Cache Controller) input
pins. Subsequent burst addresses can be generated internally
by the IC61SP12832,IC61SP12836 and controlled by the ADV
(burst address advance) input pin.
The mode pin is used to select the burst sequence order,
Linear burst is achieved when this pin is tied LOW. Interleave
burst is achieved when this pin is tied HIGH or left floating.
FAST ACCESS TIME
Symbol
tKQ
tKC
Parameter
Clock Access Time
Cycle Time
Frenquency
-166
3.5
6
166
-150
3.8
6.7
150
-133
4
7.5
133
-117
4
8.5
117
-5
Units
5
ns
10
ns
100 MHz
ICSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any errors
which may appear in this publication. © Copyright 2000, Integrated Circuit Solution Inc.
2
Integrated Circuit Solution Inc.
SSR019-0A 09/17/2001