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RM48L952: RM48L952 ADREFH and ADREFO pins

Abishek V
Prodigy 165 points
Part Number: RM48L952

Hi

In RM48L952DPGET MCU, we are not using pin number 66(ADREFH) and 67(ADREFO) in our design. Does these pins can be left floating or anything we need to connected.

Please respond

Regards

Abishek V

  • 0
    TI__Guru**** 196306 points

    Hello Abishek,

    No.

    Even if you don't plan to use the on-chip ADC in your application, the ADC reference and operating supplies should still be within the recommended operating range. The ADC does not draw current from the ADREFHI unless it is performing conversions. You can also place the ADC core in a powerdown mode, so that the current drawn from the VCCAD supply is minimal (only leakage, ~5uA).

    Unused ADC inputs can be left unconnected and connected to GND.