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MCM72BA32

Motorola
Part Number MCM72BA32
Manufacturer Motorola
Description 256KB and 512KB BurstRAM Secondary Cache
Published Apr 30, 2005
Detailed Description MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MCM72BA32/D 256KB and 512KB BurstRAM™ Secondary Cache Mo...
Datasheet PDF File MCM72BA32 PDF File

MCM72BA32
MCM72BA32

Overview
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MCM72BA32/D 256KB and 512KB BurstRAM™ Secondary Cache Module for Pentium™ The MCM72BA32SG and MCM72BA64SG are designed to provide a burstable, high performance, 256K/512K L2 cache for the Pentium microprocessor.
The modules are configured as 32K x 72 and 64K x 72 bits in a 136 pin dual readout single inline memory module (DIMM).
The module uses four of Motorola’s MCM67B518 or MCM67B618 BiCMOS BurstRAMs.
Bursts can be initiated with either address status processor (ADSP) or address status controller (ADSC).
Subsequent burst addresses are generated internal to the BurstRAM by the burst advance (ADV) input pin.
Write cycles are internally self timed and are initiated by the rising edge of the clock (K) input.
Eight write enables are provided for byte write control.
The cache family is designed to interface with popular Pentium cache controllers with on board TAG.
PD0 – PD2 are reserved for density and speed identification.
• Pentium–style Burst Counter on Board • Dual Readout SIMM for Circuit Density • Single 5 V ± 5% Power Supply • All Inputs and Outputs are TTL Compatible • Three State Outputs • Byte Parity • Byte Write Capability • Fast Module Clock Rates: 66 MHz, 60 MHz, 50MHz • Decoupling Capacitors for each Fast Static RAM • High Quality Multi–Layer FR4 PWB With Separate Power and Ground Planes • I/Os are 3.
3 V Compatible MCM72BA32 MCM72BA64 136–LEAD DIMM CASE 1104–01 TOP VIEW 1 34 35 68 BurstRAM is a trademark of Motorola.
Pentium is a trademark of Intel Corp.
REV 2 5/95 © Motorola, Inc.
1995 MOTOROLA FAST SRAM MCM72BA32•MCM72BA64 1 PIN ASSIGNMENT 136–LEAD DIMM TOP VIEW PD2 VSS VSS VSS VSS PD1 NC NC VSS VSS PD0 NC VSS NC VSS Cache Size 512KB 512KB 256KB 256KB Module 72BA64SG66/60 72BA64SG50 72BA32SG66/60 72BA32SG50 PD0 PD1 DQ0 DQ1 VCC DQ4 DQ6 DQP0 DQ8 DQ10 VSS K0 VSS DQ14 VCC DQ16 DQ17 DQ19 DQ21 VCC DQP2 DQ24 DQ26 DQ28 VSS DQ31 DQP3 VSS W0 W2 ADSP ADV VCC W4 1 2 3 4 5 6 7 8 9 10 11 1...


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