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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.
INS8228 Datasheet
