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External RTC with TIVA

manish bhatt1
Intellectual 785 points


I want to connect external RTC with TIVA TM4C1294NCPDTI.

Pls provide available RTC options and interfacing details.

  • 0
    Guru 26105 points

    Hi,

    No one can guess your needs and requirements of your application. The best thing you can do is to Google a little bit and see what different brands offer. You have to choose  some items which satisfy your requirements - power consumption, alarms, interrupts, interfaces, and price. Then if you still needs some advises about the software implementation you can ask.

    Petrei

  • 0 in reply to Petrei
    Guru 56073 points

    Hi Petrei,

    I would like to make GPIO pin PP3 provide external 32Khz RTCCLK output for CCP input capture GPTM RTC mode. So far SW configuration can only produce fuzzy low millivolts wave forms for both PP3 and PQ4. Same issue for external DIVSCLK pin PQ4 should be 6.2Mhz and oddly produces 25Khz output.

    Any ideas can help.

    Thanks you very much !!

    http://e2e.ti.com/support/microcontrollers/tiva_arm/f/908/p/540441/1973726#1973726