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CDP1879C-1 Datasheet CMOS Real-Time Clock

Manufacturer: Intersil (now Renesas)

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General Description

The CDP1879 real-time clock supplies time and calendar information from seconds to months in BCD format.

It consists of 5 separately addressable and programmable counters that divide down an oscillator input.

The clock input can have any one of 4 possible frequencies, allowing flexibility in the choice of crystal or external clock sources.

Overview

CDP1879, CDP1879C-1 March 1997 CMOS Real-Time Clock.

Key Features

  • CPU Interface for Use with General-Purpose Microprocessors.
  • Time Of Day/Calendar.
  • Reads Seconds, Minutes, Hours.
  • Reads Day of Month and Month.
  • Alarm Circuit With Seconds, Minutes or Hours Operation.
  • Power Down Mode.
  • Separate Clock Output Selects 1 of 15 Square Wave Signals.
  • Interrupt Output Activated By Clock Output and/or Alarm Circuit.
  • Date Integrity Sampling for Clock Rollover Eliminated.
  • On-Board Oscil.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
GE Logo CDP1879C-1 CMOS Real-Time Clock GE

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