M6242B Datasheet - OKI

M6242B MSM6242B

The MSM6242B is a silicon gate CMOS Real Time Clock/Calendar for use in direct busconnection Microprocessor/Microcomputer applications. An on-chip 32.768 KHz crystal oscillator time base is divided to provide addressable 4-bit I/O data for SECONDS, MINUTES, HOURS, DAY OF WEEK, DATE, MONTH and YEAR. .

M6242B Features

* DIRECT MICROPROCESSOR/MICROCONTROLLER BUS CONNECTION TIME 23:59:59 MONTH 12 DATE 31 YEAR 80

* DAY OF WEEK 7

* 4-bit data bus

* 4-bit address bus

* READ, WRITE, ALE and CHIP SELECT INPUTS

* Status registers

M6242B_OKI.pdf