DS1339A
Info: : PRODUCTION
searchIcon
cartIcon

DS1339A

Low-Current, I²C, Serial Real-Time Clock

Show More showmore-icon

RTC Provides System Flexibility with Multiple Programmable Features for a Typical 250nA Timekeeping Current

Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $2.10
Features
  • Drop-In Replacement for DS1339
  • Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap-Year Compensation Up to 2200
    • Two Time-of-Day Alarms
    • Programmable Square-Wave Output
  • Supports Crystals with Up to 60kΩ ESR
  • Maintains Time Even During Power Outage with Backup Supply Pin
    • Automatic Power-Fail Detect and Switch Circuitry
    • Trickle-Charge Capability
    • Supports VCC from 1.8V to 5V
    • Oscillator Stop Flag
    • Oscillator Runs Down to 1.15V
  • Interfaces with a Wide Range of Microcontrollers
    • I2C Serial Interface
  • Underwriters Laboratories (UL) Recognized
Additional Details
show more Icon

The DS1339A serial real-time clock (RTC) is a low-power clock/date device with two programmable time-of-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. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1339A has a builtin power-sense circuit that detects power failures and automatically switches to the backup supply, maintaining time, date, and alarm operation.

Applications

  • Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance)
  • Handhelds (GPS, POS Terminals)
  • Medical (Glucometer, Medicine Dispenser)
  • Office Equipment (Fax/Printers, Copier)
  • Other (Utility Meter, Vending Machine, Thermostat, Modem)
  • Telecommunications (Routers, Switches, Servers)
Part Models 2
1ku List Price Starting From $2.10

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
DS1339AU+
  • HTML
  • HTML
DS1339AU+T
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Sep 19, 2018

- 1753N

ASSEMBLY

DS1339AU+

PRODUCTION

DS1339AU+T

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Sep 19, 2018

- 1753N

arrow down

ASSEMBLY

DS1339AU+

PRODUCTION

DS1339AU+T

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Recently Viewed