5.4 Anti-Tamper (TMPx) Pins

Anti-tamper pins detect intrusion, for example, into a smart meter case. Upon detection through a tamper switch, automatic, asynchronous and immediate actions are performed. Refer to the section Supply Controller (SUPC) for more details.

Anti-tamper pins can be used in all modes. Date and number of tampering events are stored automatically. TMP0 to TMP2 buffers are referenced to the output of the power switch. All other tamper pins are referenced to VDD3V3.