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DS1337 - I2C Serial Real-Time Clock

General Description

The DS1337 serial real-time clock is a low-power clock/calendar 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/calendar provides seconds, minutes, hours, day, date, month, and year information.

Key Features

  • Completely Manages All Timekeeping Functions o Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap-Year Compensation Valid Up to 2100 o Two Time-of-Day Alarms o Programmable Square-Wave Output Defaults to 32kHz on Power-Up o Oscillator Stop Flag.
  • Interfaces with Most Microcontrollers o I2C Serial Interface.
  • Surface-Mount Package with an Integrated Crystal (DC1337C) Saves Additional Space and Simplifies Design.
  • -40°C to +85°C.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
DS1339 I2C Serial Real-Time Clock
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DS1339B Serial Real-Time Clock
DS1302 Trickle-Charge Timekeeping Chip
DS1305 Serial Alarm Real-Time Clock

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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GENERAL DESCRIPTION The DS1337 serial real-time clock is a low-power clock/calendar 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/calendar 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 device is fully accessible through the serial interface while VCC is between 1.8V and 5.5V. I2C operation is not guaranteed below 1.8V. Timekeeping operation is maintained with VCC as low as 1.3V.