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DS1685 - (DS1685 / DS1687) 3V/5V Real-Time Clocks

General Description

The DS1685/DS1687 are real-time clocks (RTC) designed as successors to the industry-standard DS1285, DS1385, DS1485, and DS1585 PC RTCs.

These devices provide the industry-standard DS1285 clock function with either +3.0V or +5.0V operation.

Key Features

  • Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as:.
  • Y2K Compliant.
  • +3V or +5V Operation.
  • 64-Bit Silicon Serial Number.
  • Power-Control Circuitry Supports System PowerOn from Date/Time Alarm or Key Closure.
  • 32kHz Output for Power Management.
  • Crystal-Select Bit Allows RTC to Operate with 6pF or 12.5pF Crystal.
  • SMI Recovery Stack.
  • 242 Bytes Battery-Backed NV RAM.
  • Auxiliary Battery Input.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
DS1687 (DS1685 / DS1687) 3V/5V Real-Time Clocks
DS1643 Nonvolatile Timekeeping RAMs
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DS1080CL Spread-Spectrum Crystal Multiplier
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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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www.DataSheet4U.com DS1685/DS1687 3V/5V Real-Time Clocks www.maxim-ic.com FEATURES Incorporates Industry-Standard DS1287 PC Clock plus Enhanced Features Such as: § Y2K Compliant § +3V or +5V Operation § 64-Bit Silicon Serial Number § Power-Control Circuitry Supports System PowerOn from Date/Time Alarm or Key Closure § 32kHz Output for Power Management § Crystal-Select Bit Allows RTC to Operate with 6pF or 12.