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MCM32AB128

Motorola
Part Number MCM32AB128
Manufacturer Motorola
Description 128KB/256KB/512KB Secondary Cache
Published Feb 19, 2017
Detailed Description MOTOROLA • SEMICONDUCTOR TECHNICAL DATA Advance Information 128KB/256KB/512KB Secondary Cache Module With Tag, Valid, an...
Datasheet PDF File MCM32AB128 PDF File

MCM32AB128
MCM32AB128

Overview
MOTOROLA • SEMICONDUCTOR TECHNICAL DATA Advance Information 128KB/256KB/512KB Secondary Cache Module With Tag, Valid, and Dirty for 486 Processor Based Systems MCM32AB32 MCM32AB64 MCM32AB128 The MCM32AB32SG, MCM32AB64SG, and MCM32AB128 are a family of Motorola's asynchronous secondary cache modules for the 486 processor.
This family is suited for the Intel 82420 PCI chipset.
The modules are configured with 32 bit data, 7 bit tag, valid and a dirty bit for cache writeback.
The family supports three cache sizes of the 486 processor.
The MCM32AB32SG is a 128KB single bank cache of 32K x 32.
The tag/valid is 8K x 8, and the Dirty bit is 8K x 1.
The MCM32AB64SG is a 256KB double bank cache of 64K x 32.
The tag/valid is 16K x 8 and the Dirty bit is 16K x 1.
The MCM32AB128SG is a 512KB single bank cache of 128K x 32.
The tag/valid is I 32K x 8 and the Dirty bit is 32K x 1.
Cache upgrades are seamless eliminating the need for motherboard jumpers.
The presence detect pins map into the cache...


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