MCM64PE32

•MCM64PE64

1

MOTOROLA FAST SRAM

Advance Information

256K/512K Pipelined BurstRAM

™

Secondary Cache Module

for Pentium

™

The MCM64PE32 (256K) and MCM64PE64 (512K) are designed to provide

a burstable, high performance, L2 cache for the Pentium microprocessor in

conjunction with Intel’s Triton II chip set. The MCM64PE32 is configured as 32K

x 64 bits and the MCM64PE64 is configured as 64K x 64 bits. Both are packaged

in a 160 pin card edge memory module. The MCM64PE32 module uses

Motorola’s 3.3 V 32K x 32 BurstRAMs and one Motorola 5 V 32K x 8 FSRAM for

the tag RAM. The MCM64PE64 module uses Motorola’s 3.3 V 64K x 32

BurstRAMs and one Motorola 5 V 32K x 8 FSRAM for the tag RAM.

Bursts can be initiated with either address status processor (ADSP) or cache

address status (CADS). Subsequent burst addresses are generated internal to

the BurstRAM by the cache burst advance (CADV) input pin.

Write cycles are internally self timed and are initiated by the rising edge of the

clock (CLK0) input. Eight write enables are provided for byte write control.

PD0 – PD3 map into the Triton II chip set for auto–configuration of the cache

control.

• Pentium–Style Burst Counter on Chip

• Pipelined Data Out

• 160 Pin Card Edge Module

• Address Pipeline Supported by ADSP Disabled with Ex

• All Cache Data and Tag I/Os are TTL Compatible

• Three State Outputs

• Byte Write Capability

• Fast Module Clock Rate: 66 MHz

• Fast SRAM Access Times:15 ns for Tag RAM

8 ns for Data RAMs

• One–Cycle Deselect Data RAMs

• Decoupling Capacitors for Each Fast Static RAM

• High Quality Multi–Layer FR4 PWB with Separate Power and Ground

Planes

• 8 Bits Tag RAM

• Dual Power Supplies: 3.3 V + 10%, – 5%

5 V

± 10%

• Burndy Connector, Part Number: CELP2X80SC3Z48

• Intel COAST 3.0 Option III Compliant

• Burst Order Select (BOSEL) Option

BurstRAM is a trademark of Motorola.

Mfax is a trademark of Motorola.

Pentium is a trademark of Intel Corp.

This document contains information on a new product. Motorola reserves the right to change or discontinue this product without notice.

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

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MCM64PE32

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160–LEAD CARD EDGE

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12/9/96