APPLICATION NOTE 520

Using a Watchdog Timekeeping RAM with a Microcontroller

© May 02, 2003, Maxim Integrated Products, Inc.

Abstract: Nonvolatile Y2K-compliant real-time clocks (RTCs) with battery-backed SRAM and watchdog timer provide time and date functions to microcontrollers, such as the 8051 industry standard architecture. This application note highlights an example program featuring RTCs such as a DS1556 when used with a DS5000 microcontroller. A reference design schematic is included in this application note.

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Related Parts
DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM Free Samples  
DS1554 256k Nonvolatile, Y2K-Compliant Timekeeping RAM Free Samples  
DS1556 1M, Nonvolatile, Y2K-Compliant Timekeeping RAM Free Samples  
DS1557 4Meg, Nonvolatile, Y2K-Compliant Timekeeping RAM Free Samples  


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APP 520: May 02, 2003
APPLICATION NOTE 520, AN520, AN 520, APP520, Appnote520, Appnote 520