high current consumption with stm32g474

[rzong.1]

I have about 250 mikroAmpere current consumption in shutdown mode.

used board: NUCLEO-G474RE, nothing except ammeter connected to the board.

code to shutdown:

__HAL_RCC_PWR_CLK_ENABLE();

HAL_PWR_DisableWakeUpPin (PWR_WAKEUP_PIN2_HIGH);

/* Clear all related wakeup flags */

__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);

HAL_PWR_EnableWakeUpPin (PWR_WAKEUP_PIN2_HIGH);

__HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);

HAL_PWREx_EnterSHUTDOWNMode();

the same code on a nucleo f411 schows 2 uA as expected. only the G474 board show this high current.

our application board with g474 show the same high current.

if I heat the board up, the current is not increasing!

what can be the problem?

Is something special with g474?

thanks

Martin

[rzong.1]

I read again the datasheet and 250 mikroampere (IDD(wakeup from shutdown)) is quite normal, because the wakeup logic runs with 16 MHz.

That is very ugly.