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DS1689 - (DS1689 / DS1693) 3-Volt/5-Volt Serialized Real-Time Clock

Description

X1 X2 RCLR AD0-AD7 PWR KS CS ALE WR RD VCCO IRQ ORDERING INFORMATION PART # DS1689S DS1689SN DS1693 DESCRIPTION RTC IC, 28-pin SOIC RTC IC, 28-pin SOIC IND RTC Module; 28-pin DIP SQW VCCI GND VBAT VBAUX PSEL CEI CEO - Crystal Input - Crystal Output - RAM Clear Input - Mux’ed Address/Data Bus -

Features

  • Incorporates industry standard DS1287 PC clock plus enhanced features:.
  • +3- or +5V operation.
  • 64-bit silicon serial number.
  • 64-bit customer specific ROM or additional serial number available.
  • Power control circuitry supports system power-on from date/time alarm or key closure.
  • Automatic battery backup and write protection to external SRAM.
  • Crystal select bit allows RTC to operate with 6 pF or 12.5 pF crystal.
  • 114 bytes user NV RAM.
  • Auxiliary battery input.

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Datasheet Details

Part number DS1689
Manufacturer Dallas Semiconductor
File Size 375.24 KB
Description (DS1689 / DS1693) 3-Volt/5-Volt Serialized Real-Time Clock
Datasheet download datasheet DS1689 Datasheet

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Full PDF Text Transcription

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www.DataSheet4U.com DS1689/DS1693 3-Volt/5-Volt Serialized Real-Time Clock with NV RAM Control www.maxim-ic.com FEATURES Incorporates industry standard DS1287 PC clock plus enhanced features: § +3- or +5V operation § 64-bit silicon serial number § 64-bit customer specific ROM or additional serial number available § Power control circuitry supports system power-on from date/time alarm or key closure § Automatic battery backup and write protection to external SRAM § Crystal select bit allows RTC to operate with 6 pF or 12.
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