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RF37S114: RF37S114HTFJB

Jaydyn Halliwell
Prodigy 20 points
Part Number: RF37S114
Other Parts Discussed in Thread: TRF7970A,

I seem to be having problems writing to my RFID chip (RF37S114HTFJB) using the Texas instruments TRF7970A EVM.  It does write to the larger RFID tags supplied with the EVM kit, which makes me think it’s an antenna size/power issue?  Do you know if these two devices have ever worked together?

  • 0
    TI__Guru*** 135355 points
    Hello Jaydyn,

    I just tested with the TRF7970AEVM and had no issue writing the RF37S114 with it.

    How far/near do you have the tag to the antenna?

    Are you using the Option flag option with in the TRF7970AEVM GUI? The Option Flag is mandatory to write data to RF37S114 tags.