DS12C887

DS12C887 Description

DS12C887 Description

DS12C887 Categories

DS12C887 Manufacturer

DS12C887 Datasheet (PDF)

DS12C887 Price & Availability

DS12C887 Features

• Drop-in replacement for IBM AT computer clock/calendar
• RTC counts seconds, minutes, hours, days, dates, months, years, and leap years, valid to 2100
• Binary or BCD format
• Selectable 12-hour with a.m./p.m. or 24-hour modes
• Optional daylight savings
• Century register maintains Y2K compatibility in hardware
• Nonvolatile timekeeping

  Embedded lithium, crystal and support circuitry

• Multiplexed bus timing selectable for Motorola or Intel processors
• Timekeeping read/written as 128-RAM locations
• 15-bytes clock/control registers
• 113-bytes user RAM
• Generates square wave output signals
• Three software-maskable processor interrupts
• Programmable time-of-day alarm, from 1/second to 1/day
• Interval alarms from 122ms to 500ms
• Optional RAM-clear pin (DS12C887A)
• Temperature range:

  DS12C887/DS12C887A: 0°C to 70°C

  DS12C887-IND/DS12C887A-IND: -40°C to +85°C

DS12C887 Parameters