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¡ Semiconductor

MSM82C84A-2RS/GS/JS

GENERAL DESCRIPTION

The MSM82C84A-2RS/GS is a clock generator designed to generate MSM80C86A-10 and

MSM80C88A-10 system clocks of 8MHz.

Due to the use of silicon gate CMOS technology, standby current is only 40 mA (MAX.), and the

power consumption is very low with 16 mA (MAX.) when a 8 MHz clock is generated.

FEATURES

• Operating frequency of 6 to 24 MHz (CLK output 2 to 8 MHz)

•3 m silicon gate CMOS technology for low power consumption

• Built-in crystal oscillator circuit

• 3 V to 6 V single power supply

• Built-in synchronized circuit for MSM80C86A-10 and MSM80C88A-10 READY and RESET

• TTL compatible

• Built-in Schmitt trigger circuit (RES input)

• 18-pin Plastic DIP (DIP18-P-300-2.54): (Product name: MSM82C84A-2RS)

• 20-pin Plastic QFJ (QFJ20-P-S350-1.27): (Product name: MSM82C84A-2JS)

• 24-pin Plastic SOP (SOP24-P-430-1.27-K): (Product name: MSM82C84A-2GS-K)

FUNCTIONAL BLOCK DIAGRAM

¡ Semiconductor

MSM82C84A-2RS/GS/JS

CLOCK GENERATOR AND DRIVER

RESET

OSC

PCLK

CLK

READY

D

C

Q

1

2

1

3

S

Y

N

C

S

Y

N

C

D

C

Ø

Q

(F2)

D

C

≠

Q

(F1)

RES

F/C

EFI

CSYNC

ASYNC

Crystal

Oscillator

E2O0012-27-X2

This version: Jan. 1998

Previous version: Aug. 1996