DS1337 (1.8-5.5V) I2C RTC SOIC8 150mil

The DS1337 serial real-time clock (RTC) is a lowpower, full binary-coded decimal (BCD)

clock/calendar Address

and data are transferred serially through an I2C

interface. The clock/calendar provides seconds,

minutes, hours, day, date, month, and year

information. The end of the month date 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 DS1337 has a built-in powersense circuit that detects power failures and

automatically switches to the backup supply,

maintaining time and date operation

 

Handhelds (GPS, POS Terminal)

Consumer Electronics (Set-Top Box, Digital

Recording, Network Appliance)

Office Equipment (Fax/Printer, Copier)

Medical (Glucometer, Medicine Dispenser)

Telecommunications (Router, Switcher, Server)

Other (Utili7ty Meter, Vending Machine, Thermostat,modem)

 

• Completely Manages All Timekeeping Functions

o RTC Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100

o-

o Programmable Square-Wave Output Signal

• S

• Interfaces with Most Microcontrollers

o I2C Serial Interface

• Low-Power Operation Extends Battery Backup Run Time

o Automatic Power-Fail Detect and Switch Circuitry

• -40°C to +85°C Industrial Temperature Range Supports Operation in a Wide Range of Applications

• Underwriters Laboratories (UL®) Recognized