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    Part Img DS1302 datasheet by Maxim Integrated Products

    • Using the Dallas Tricklecharge Timekeeper
    • Original
    • No
    • No
    • Obsolete
    • EAR99
    • 8542.39.00.01
    • 8542.39.00.00
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    DS1302 datasheet preview

    DS1302 Frequently Asked Questions (FAQs)

    • The DS1302 has a built-in battery-backed SRAM that retains data during power failures. Connect a 3V lithium coin cell battery to the VBAT pin to ensure data retention.
    • The recommended crystal oscillator frequency for the DS1302 is 32.768 kHz, which is a standard frequency for real-time clocks.
    • The clock frequency of the DS1302 is set by writing to the Clock Halt (CH) bit in the Seconds register. Set CH=0 to enable the oscillator, and CH=1 to disable it.
    • Yes, the DS1302 is 5V tolerant, but it's recommended to use a level shifter or voltage divider to ensure the input signals are within the recommended voltage range.
    • The DS1302 has a century bit that allows it to handle years beyond 1999. Set the century bit (bit 7 of the Year register) to 1 for years 2000 and beyond.
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