STMicroelectronics STM32WLEx Reference Manual page 944

Tamper and backup registers (TAMP)
Bit 2 CTAMP3F: Clear TAMP3 detection flag
Bit 1 CTAMP2F: Clear TAMP2 detection flag
Bit 0 CTAMP1F: Clear TAMP1 detection flag
944/1306
Writing 1 in this bit clears the TAMP3F bit in the TAMP_SR register.
Writing 1 in this bit clears the TAMP2F bit in the TAMP_SR register.
Writing 1 in this bit clears the TAMP1F bit in the TAMP_SR register.
RM0461 Rev 5
RM0461