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UPB8238 - 8080A SYSTEM CONTROLLER AND BUS DRIVER

This page provides the datasheet information for the UPB8238, a member of the UPB8228 8080A SYSTEM CONTROLLER AND BUS DRIVER family.

Datasheet Summary

Description

BLOCK DIAGRAM PROCESSOR 03 DATA BUS SYSTEM DATA BUS vee@- GNO@-I STSTS(1) 572 MEMR MEMW IIOR I/OW I3USEN ~PB8228/8238 ABSOLUTE MAXIMUM RATINGS

Operating Temperature .

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Storage Temperature .

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Datasheet preview – UPB8238

Datasheet Details

Part number UPB8238
Manufacturer NEC
File Size 313.16 KB
Description 8080A SYSTEM CONTROLLER AND BUS DRIVER
Datasheet download datasheet UPB8238 Datasheet
Additional preview pages of the UPB8238 datasheet.

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Full PDF Text Transcription

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NEe Microcomputers, Inc. fttIEC Jl,PB8228 J.I PB8238 8080A SYSTEM CONTROLLER AND BUS DRIVER OESCR IPTION The pPB8228/8238 is a single chip cOntroller and bus driver for 8080A based systems. All the required interface signals rrecessary to connect RAM, ROM and I/O components to a pPD8080A are generated. The pPB8228/8238 provides a bi·directional three·state bus driver for high TTL fan-out and isolation of the processor data bus from the system data bus for increased noise immunity. The system controller portion of the pPB8228/8238 consists of a status latch for definition of processor machine cycles and a gating array to decode this information for direct interface to system components.
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