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MOTOROLA
• SEMICONDUCTOR
TECHNICAL DATA
128KB and 256KB Secondary Cache Fast Static RAM Modules
With Tag for 486 Processor Based Systems
MCM32A32 MCM32A64
The MCM32A32 and MCM32A64 are two products in Motorola's asynchronous secondary cache module family for the 486 processor. The modules are configured with 32-bit data, 8-bit tag, and an altered bit for cache writeback. The family supports all cache sizes of the 486 processor. They are offered in 33 and 50 MHz versions:
The 32A32 is a 128KB single bank cache of 32K x 32. The tag is an 8K x 8, and the altered bit is 8K x 1. The 32A64 is a 256KB double bank cache of 64K x 32. The tag is 16K x 8 and the altered bit is 16K x 1. The cache family is designed to interface with popular 486 chipsets with on-board cache controllers.
MCM32A64 Datasheet
