6.2.5 RTC Pinout
The pins used for Tamper Detection by the Real Time Counter (RTC) are not mapped to the regular PORT functions. These pins and their multiplexing is controlled by register settings of the RTC. If many pins of the tamper detection feature is not used by the RTC, then the pin could be used for other I/O functions, by ensuring the corresponding TAMPCTRL.INACT function is disabled.
| RTC Signal | I/O Pin |
|---|---|
| IN0 | PB00 |
| IN1 | PB02 |
| IN2 | PA02 |
| IN3 | PC00 |
| IN4 | PC01 |
| OUT | PB01 |
Important: If Supply Controller
(SUPC) and RTC are configured to drive pin PB1 or pin PB2, then the RTC has
priority.