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Numéro de référence | MCM32AB128 | ||
Description | 128KB/256KB/512KB Secondary Cache Module | ||
Fabricant | Motorola Semiconductors | ||
Logo | |||
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 configuration register of the Intel
82240 CDC.
• Low Profile Edge Connector: Burndy Part Number: CELP2X56SC3Z48
• Single 5 V ± 10% Power Supply
• All Inputs and Outputs are TIL Compatible
• Three State Outputs
• Fast Module Cycle Time: Up to External Processor Bus Speed of 33 MHz
• Cache Byte Write, Bank Chip Enable, Bank Output Enable
• Decoupling Capacitors are Used for Each Fast Static RAM
• High Quality Multi-Layer FR4 PWB With Separate Power and Ground Plane
BurstRAM is a registered trademark of Motorola.
This document contains information on a new product. Specifications and information herein are subject to change without notice.
MCM32AB32.MCM32AB64.MCM32AB128
5·12
MOTOROLA FAST SRAM DATA
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Pages | Pages 3 | ||
Télécharger | [ MCM32AB128 ] |
No | Description détaillée | Fabricant |
MCM32AB128 | 128KB/256KB/512KB Secondary Cache Module | Motorola Semiconductors |
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