• Part: DS1287A
  • Manufacturer: Dallas Semiconductor
  • Size: 47.42 KB
Download DS1287A Datasheet PDF
DS1287A datasheet preview

DS1287A Key Features

  • Drop-in replacement for IBM AT puter clock/calendar
  • Pin patible with the MC146818A
  • Self-contained
  • Counts
  • Binary or BCD representation of time, calendar, and
  • 12- or 24-hour clock with AM and PM in 12-hour mode
  • Daylight Savings Time option
  • Selectable between Motorola and Intel bus timing
  • Multiplex bus for pin efficiency
  • Interfaced with software as 64 RAM locations

Other DS1287A Datasheets

Manufacturer Part Number Description
Dallas Semiconducotr Logo Dallas Semiconducotr DS1287 Real Time Clock

DS1287A Description

AD0 AD7 NC MOT CS AS R/W DS RESET IRQ drain) SQW VCC GND RCLR Multiplexed address/data bus No connection Bus type selection Chip select Address strobe Read/write input Data strobe Reset input Interrupt request output (open Square wave output +5 volt supply Ground RAM clear Programmable square wave output signal Bus-patible interrupt signals (IRQ) Three interrupts are separately software-maskable and testable...