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DS1308 - Low-Current I2C RTC

Datasheet Summary

Description

The DS1308 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV RAM.

Address and data are transferred serially through an I2C interface.

The clock/calendar provides seconds, minutes, hours, day, date, month, and year information.

Features

  • Compatible with Crystal ESR Up to 100kΩ Allows a Crystal to be Optimized for Cost and Space.
  • Low-Power Operation Extends Battery Backup Run Time.
  • Low Timekeeping Current of 250nA (typ).
  • Automatic Power-Fail Detect and Switch Circuitry.
  • Completely Manages All Timekeeping Functions.
  • Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2400.
  • E.

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Datasheet preview – DS1308

Datasheet Details

Part number DS1308
Manufacturer Maxim Integrated
File Size 636.09 KB
Description Low-Current I2C RTC
Datasheet download datasheet DS1308 Datasheet
Additional preview pages of the DS1308 datasheet.

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Full PDF Text Transcription

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DS1308 Low-Current I2C RTC with 56-Byte NV RAM General Description The DS1308 serial real-time clock (RTC) is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV RAM. 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 an AM/PM indicator. The DS1308 has a built-in power-sense circuit that detects power failures and automatically switches to the backup supply, maintaining time and date operation.
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