And a problem solved.If PA0 = 1, when MCU goes to standby, RTC interrupt does freeze MCU. But if PA0=0(when a MCU goes to standby), and PA0 rising - wakeup work. And a RTC wakeup work too!In my schematic wakeup button was connected from PA0 to ground...

I found same problem on a STM32F207VG. Separately PA0 wakeup and tamper/timestamp(PC13) wakeup from standby mode work fine.But if I enable it both, then PA0 wakeup work fine, but PC13 tamper activation makes MCU freeze. It does not work until a hardw...