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Thread: Teensy 4.1 VBAT pins

  1. #1

    Teensy 4.1 VBAT pins

    Anyone who can help,

    Can anyone help me identify the correct pins on the Teensy 4.1 to which a battery should be connected for the RTC to continue to function?
    There's no indication on the pin-out diagram.

    Many thanks,

    Allen

  2. #2

  3. #3
    Hi Manitou,

    Many thanks for your quick response, and I have looked through that posting, but cannot see any pins labelled 'VBat'.

    Is there something that I should be looking for?

    I appreciate your help,

    Best wishes,

    Allen

  4. #4
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    The holes next to the micro-SD card reader, are in the same order as the Teensy 4.0, but in a different location. Going from top to bottom on the above picture of the back side, the pins are:
    Pin 38 on the outer row
    On/off
    Program
    Ground
    3.3v
    Vbat
    Pin 27 on the outer row

  5. #5
    Senior Member+ defragster's Avatar
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    Quote Originally Posted by AllenCherry View Post
    Hi Manitou,

    Many thanks for your quick response, and I have looked through that posting, but cannot see any pins labelled 'VBat'.

    Is there something that I should be looking for?

    I appreciate your help,

    Best wishes,

    Allen
    They are identical in order to the T_4.0, just shifted over to accommodate the parts and match the T_3.6 form factor. As @Saibot notes they are called out lower in the text linked by @Manitou.

  6. #6
    Ah!!

    Many thanks - all becomes clear now!

    Sorry to be such an idiot!

    Thank you all for your patience,

    Allen

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