DS1744P

Y2K-Compliant, Nonvolatile Timekeeping RAMs

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Part Details

  • Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit, and Lithium Energy Source
  • Clock Registers are Accessed Identically to the Static RAM. These Registers are Resident in the Eight Top RAM Locations.
  • Century Byte Register (i.e., Y2K Compliant)
  • Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
  • BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap-Year Compensation Valid Up to the Year 2100
  • Battery Voltage-Level Indicator Flag
  • Power-Fail Write Protection Allows for ±10% VCC Power-Supply Tolerance
  • Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time
  • DIP Module Only
    • Standard JEDEC Byte-Wide 32k x 8 Static RAM Pinout
  • PowerCap Module Board Only
    • Surface-Mountable Package for Direct Connection to PowerCap Containing Battery and Crystal
    • Replaceable Battery (PowerCap)
    • Power-On Reset Output
    • Pin-for-Pin Compatible with Other Densities of DS174xP Timekeeping RAM
  • Also Available in Industrial Temperature Range: -40°C to +85°C
DS1744P
Y2K-Compliant, Nonvolatile Timekeeping RAMs
DS1744, DS1744P: Block Diagram
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Hardware Ecosystem

Parts Product Life Cycle Description
Nonvolatile Timekeeping RAMs 1
DS9034PCX PowerCap with Crystal
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