UM82C480 Overview
The UM82C480 is a highly integrated, IBM PC/AT patible chip set for high performance 80386/80486 based personal puter 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 mercial parts constitute a low cost, highly...
UM82C480 Key Features
- 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 line fill as well as 80486 burst mode
- Support Automatic Memory Size Detection
- Sophisticated DRAM controller
- Support Fast/Standard page mode
- Support 4 banks CPU speed DRAM with memory size up to 64MB