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UM82C480 - 386/486 PC Chip Set

General Description

The UM82C480 is a highly integrated, IBM PC/AT compatible chip set for high performance 80386/80486 based personal computer systems.

Key Features

  • 100% IBM PC/AT compatible Support 80386 CPU running at 25/33/40 MHz Support 80486 CPU running at 25/33/40/50 MHz in 1X clock Support Intel 80387 / Weitek 3167 / Weitek 4167 Floating Point Coprocessors Built-in cache controller: - Direct-mapped organization with write-back operation - Q wait state for cache hit - Flexible cache size: 32/64/128/256/512/1024 KB - Hidden DRAM refresh to boost system performance - Built-in registers to support three independent non-cacheable regions - Support cache l.

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Datasheet Details

Part number UM82C480
Manufacturer UMC
File Size 256.37 KB
Description 386/486 PC Chip Set
Datasheet download datasheet UM82C480 Datasheet

Other Datasheets by UMC

Part Number Description
UM82C481 MEMORY CONTROLLER
UM82C482 SYSTEM CONTROLLER
UM82C450 ASYNCHRONOUS COMMUNICATION ELEMENT
UM82C451 PARALLEL/ASYNCHRONOUS COMMUNICATION ELEMENT
UM82C452 SINGLE CHIP MULTI - I/O
UM82C01 Capacitance Keyboard Encoder
UM82C088 PC/XT INTEGRATION CHIP
UM82C11 Printer Adapter Interface
UM82C11-C Printer Adapter Interface
UM82C206 Integrated Peripheral Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SSEvsas UM82C480 386/486 PC Chip Set ****& I_ General Description The UM82C480 is a highly integrated, IBM PC/AT compatible chip set for high performance 80386/80486 based personal computer systems. Built with exquisite cache controller in advanced 1.0um CMOS technology, UM82C481 (Integrated Memory Controller, IMC), UM82C482 (Integrated System Controller, ISC), with UM82C206 (Integrated Peripheral Controller, IPC), and limited counts of commercial parts constitute a low cost, highly reliable, full advanced feature personal computer system.