MC146818 Overview
® MOTOROLA MC146818 Advance Information CMOS REAL-TIME CLOCK PLUS RAM (RTC) (HIGH-PERFORMANCE SILICON-GATE PLEMENTARY MOS) The MC146818 Real-Time Clock plus RAM is a peripheral device which includes the unique MOTEL concept for use with various microprocessors, microputers, and larger puters. This part REAL-TIME CLOCK PLUS RAM bines three unique.
MC146818 Key Features
- Low-Power, High-Speed, High-Density CMOS
- Internal Time Base and Oscillator
- Counts Seconds, Minutes, and Hours of the Day
- Counts Days of the Week, Date, Month, and Year
- 3 V to 6 V Operation
- Time Base Input Options: 4.194304 MHz, 1.048576 MHz, or
- Time Base Oscillator for Parallel Resonant Crystals
- 40 to 200 p.W Typical Operating Power at Low Frequency Time Base
- 4.0 to 20 mW Typical Operating Power at High Frequency Time Base
- Binary or BCD Representation of Time, Calendar, and Alarm