Current consumption in STM32L072 very high

[MrDiamond]

Hi guys!

A have a problem with power consumption, when I try to put the microcontroller in low power sleep, the current consumption is around 8.5mA, when I expect around 20uA.

I'm using a custom board, but only a single LED is connected, capacitors and a 32kHz (P/N recomended by ST).

I tested in Sleep and Stop mode (with low power regulator), changed the clock to MSI in 100kHz, without the ST-Link connected, Serial Wire Debug deactivated, and nothing :(

Only in standby mode i get 2uA of current. Please a need hekp around this situation :)

Below I will post a print of clock configutarion and a snap of code, peripherals enable os only de TIM7 for the SysTick. (I don't know why, if I use the default Systick, i get hardfault when try to enter in sleep mode).

Code to reconfigure the Clock:

void configClock_MSI120k(){
	 RCC_OscInitTypeDef RCC_OscInitStruct = {0};
 
	 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
	 RCC_OscInitStruct.MSIState = RCC_MSI_ON;
	 RCC_OscInitStruct.MSICalibrationValue = 0;
	 RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_2;
	 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
 
	 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
	 {
		Error_Handler();
	 }
 
	 /** Configure the main internal regulator output voltage
	 	 */
}

Main code

 /* Initialize all configured peripherals */
 MX_GPIO_Init();
 /* USER CODE BEGIN 2 */
 SET_LEDBAT(GPIO_PIN_RESET);
 HAL_Delay(250);
 
 /*
 * Enable RCC Power Clock
 */
 __HAL_RCC_PWR_CLK_ENABLE();
 /*
 * Enable Flash Power Down
 */
 FLASH->ACR |= FLASH_ACR_SLEEP_PD;
 
 HAL_SuspendTick();
 configClock_MSI120k();
 
 /*
 * Clear flags
 */
 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WU);
	__HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);
	
	/*
	 * Turnoff red led
	 */
	SET_LEDBAT(GPIO_PIN_SET);
 
	HAL_PWR_EnterSLEEPMode(PWR_LOWPOWERREGULATOR_ON, PWR_SLEEPENTRY_WFI);
	//HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI);
	//HAL_PWR_EnterSTANDBYMode();
 
	SET_LEDBAT(GPIO_PIN_RESET);

 

Thank guys.