MC146818 - Motorola

MC146818 REAL-TIME CLOCK PLUS RAM

® MOTOROLA MC146818 Advance Information CMOS REAL-TIME CLOCK PLUS RAM (RTC) (HIGH-PERFORMANCE SILICON-GATE COMPLEMENTARY MOS) The MC146818 Real-Time Clock plus RAM is a peripheral device which includes the unique MOTEL concept for use with various microprocessors, microcomputers, and larger computers. This part REAL-TIME CLOCK PLUS RAM combines three.

Features

a complete time-of-day clock with alarm and one hundred year calendar, a programmable periodic inter- rupt and square-wave generator, and 50 bytes of low-power static RAM. The MC146818 uses high-speed CMOS technology to interface I with 1 MHz processor buses, while consuming very little power. The Real-Time Clock plus RAM has two distinct uses. First, it is designed as a battery powered CMOS part (in an otherwise NMOSITTL system) including all the common battery backed-up functions such as L SUFFIX CERAMIC PACKAGE CASE 716 RAM, time, and calendar. Secondly, the MC146818 may be used with.