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INS8238 - System Controller and Bus Driver

This page provides the datasheet information for the INS8238, a member of the INS8228 System Controller and Bus Driver family.

Datasheet Summary

Description

The INS8228/INS8238 is a system controller/bus driver contained in a standard, 28-pin dual-in-line package.

Features

  • MICROBUSlM.
  • Compatible.
  • Single Chip System' Controller and Bus Driver for 1NS8080A Microcomputer Systems.
  • Allows Use of Multibyte CALL Instructions for Interrupt Acknowledge.
  • Provides User-Selected Single-Level Interrupt Vector (RST7).
  • Provides Isolation for Data Bus.
  • Supports a Wide Variety of System Bus Structures.
  • Reduces System Component Count.
  • INS8238 Provides Advanced Input/Output Write and Memory Write Control Si.

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Datasheet preview – INS8238

Datasheet Details

Part number INS8238
Manufacturer National Semiconductor
File Size 443.10 KB
Description System Controller and Bus Driver
Datasheet download datasheet INS8238 Datasheet
Additional preview pages of the INS8238 datasheet.

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Full PDF Text Transcription

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~National ~ Semiconductor APRIL 1978 INS8228/1NS8238 System Controller and Bus Driver General Description The INS8228/INS8238 is a system controller/bus driver contained in a standard, 28-pin dual-in-line package. The chip, which is fabricated using Schottky Bipolar technology, generates all the read and write control signals required to directly interface the memory and input/output components of National Semiconductor's INS8080A microcomputer family. The chip also provides drive and isolation for the bidirectional data bus of the INS8080A microprocessor. Data bus 'isolation enables the use of slower memory and input/output components in a system, and provides for enhanced system noise immunity.
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