TLF8752

June 1986

DP8224 Clock Generator and Driver

General Description

The DP8224 is a clock generatordriver contained in a stan-

dard 16-pin dual-in-line package The chip which is fabri-

cated using Schottky Bipolar technology generates clocks

and timing for the 8080A microcomputer family

Included in the DP8224 is an oscillator circuit that is con-

trolled by an external crystal which is selected by the de-

signer to meet a variety of system speed requirements Also

included in the chip are circuits that provide a status strobe

for the DP8228 or DP8238 system controllers power-on re-

set for the 8080A microprocessor and synchronization of

the READY input to the 8080A

Features

Y

Crystal-controlled oscillator for stable system operation

Y

Single chip clock generator and driver for 8080A micro-

processor

Y

Provides status strobe for DP8228 or DP8238 system

controllers

Y

Provides power-on reset for 8080A microprocessor

Y

Synchronizes READY input to 8080A microprocessor

Y

Provides oscillator output for synchronization of exter-

nal circuits

Y

Reduces system component count

8080A Microcomputer Family Block Diagram

TLF8752 – 1

C1995 National Semiconductor Corporation

RRD-B30M105Printed in U S A