UPD8255 - PROGRAMMABLE PERIPHERAL INTERFACES

Product Overview

NEC

UPD8255 PROGRAMMABLE PERIPHERAL INTERFACES by NEC - Datasheet Preview — Datasheet preview – UPD8255

Datasheet Details

Part number	UPD8255
Manufacturer	NEC
File Size	374.28 KB
Description	PROGRAMMABLE PERIPHERAL INTERFACES
Datasheet	UPD8255 Datasheet
Additional preview pages of the UPD8255 datasheet.

Product details

Description

Data Bus Buffer The 3-state, bidirectional, eight bit Data Bus Buffer (DO-D71 of the .uPD8255 and .uPD8255A-5 can be directly interfaced to the processor's system Data Bus (DO-D7)The Data Bus Buffer is controlled by execution of IN and OUT instructions by the processor.Control Words and Status information are also transmitted via the Data Bus Buffer.Read/Write and Control Logic This block manages all of the internal and external transfers of Data, Control and Status.Through this block, the

Features

unique to each of the ports. Port A = An 8-bit data output latch/buffer and data input latch. Port B = An 8-bit data input/output latch/buffer and an 8-bit data input buffer.

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Published: Feb 26, 2017 |