MCM64PD32 Datasheet, PDF (1/16 Pages) Motorola, Inc – 256K/512K Pipelined BurstRAM Secondary Cache Module for Pentium

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Advance Information
256K/512K Pipelined BurstRAM™
Secondary Cache Module
for Pentium™
The MCM64PD32 (256K) and MCM64PD64 (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 MCM64PD32 is configured as 32K
x 64 bits and the MCM64PD64 is configured as 64K x 64 bits. Both are packaged
in a 160 pin card edge memory module. Each module uses Motorola’s 3.3 V 32K
x 32 BurstRAMs and two Motorola 3.3 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
• Single 3.3 V +10%, – 5% Power Supply
• Burndy Connector, Part Number: CELP2X80SC3Z48
• Intel COAST 3.0 Option III Compliant
• Burst Order Select (BOSEL) Option
Order this document
by MCM64PD32/D
MCM64PD32
MCM64PD64
160–LEAD CARD EDGE
CASE TBD, TOP VIEW
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42
43
80
BurstRAM 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.
6/14/96
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MCM64PD32•MCM64PD64
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