IBM Introduces Industry's Fastest One-Megabit SRAMs

FISHKILL, N.Y., May 1, 1995 - IBM today introduced the world's fastest
high-speed CMOS-based memory chip commercially available, making possible
a memory access time of 2.5 nanoseconds (ns), the time it takes a beam of
light to travel two and a half feet.

IBM's one-megabit synchronous Static Random Access Memory (SRAM) chips are
designed for PowerPC(tm) and other high performance RISC-based servers and
workstations with clock speeds up to 200MHz.

"Our 1Mb CMOS-based SRAMs will match the speed of the industry's fastest
microprocessors," said Roger Verhelst, SRAM product manager, IBM
Microelectronics(tm) Division. "With this announcement, we offer designers
the ability to provide their customers the highest possible system memory
performance, a benefit they can't find anywhere else."

A workstation designer's primary concern is to optimize system performance
with the central processing unit (CPU). With processor speeds continually
increasing, the design focus is on the memory unit's ability to supply
data to the CPU. IBM's advanced CMOS SRAM products allow workstation L2
cache memories to match the speed of the CPU, significantly enhancing
overall system performance.

Using two SRAM chips, designers of 200 MHz systems can implement a 256K
byte cache memory. Features of the new SRAMs include:

* Enhanced system data through-put with synchronous pipeline or
  flowthru operation

* Reduced signal noise with low voltage TTL or GTL/HSTL I/O level
  compatibility

* Self-timed late write feature, allowing consecutive read and
  write cycles

* Fast output enable timing

* Byte write and global write capability

* 32K x 36 and 64K x 18 organizations that minimize device count
  and optimize L2 cache memory size

These high performance SRAMs will use IBM's new plastic ball grid array
(PBGA) packaging. The PBGA package offers a small footprint and reduced
pin inductance characteristics for operation at 200 MHz.

The new SRAMs are offered in 5, 6 and 7 ns cycle times, with pipeline
access times of 2.5, 3 and 3.5 ns and flowthru access times of 7, 7.5 and
8 ns.

Samples of the one-megabit high performance SRAMs can be ordered today. The
32K x 36 pipelined SRAM with a 5 ns cycle time and a 2.5 ns access time is
priced at $110.00 in quantities of 1,000. Volume production is planned for
the third quarter of this year.

IBM, headquartered in Armonk, N.Y., is a supplier of integrated
microelectronics technologies to a growing number of companies worldwide.
Its products range from semiconductor design and fabrications to complete
and fully tested functional assemblies. IBM Microelectronics,
headquartered in Fishkill, N.Y. is responsible for developing,
manufacturing and marketing these products and technologies.

Prices are current as of May 1, 1995 and are subject to change without
notice.

For additional information on IBM Microelectronics' Memory offerings, call
1-800-IBM-0181.

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