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DS1339 Key Features

  • pletely Manages All Timekeeping
  • Interfaces to Most Microcontrollers o I2C Serial Interface
  • Low-Power Operation Extends Battery Backup Run Time o Automatic Power-Fail Detect and Switch Circuitry o Trickle-Charge
  • Underwriters Laboratories® (UL) Recognized
  • Surface-Mount Package with an Integrated Crystal (DS1339C Saves Additional Space and Simplifies Design

Related Maxim Integrated Datasheets

Part Number Description
DS1339A Serial Real-Time Clock
DS1339B Serial Real-Time Clock
DS1337 I2C Serial Real-Time Clock
DS1302 Trickle-Charge Timekeeping Chip
DS1305 Serial Alarm Real-Time Clock

DS1339 Description

The DS1339 serial real-time clock (RTC) is a lowpower clock/date device with two programmable timeof-day alarms and a programmable square-wave output. Address and data are transferred serially through an I2C bus. The clock/date provides seconds, minutes, hours, day, date, month, and year information.