stm32g030 stanby mode current problem

[Garslanbay]

Hello everyone,

I have a problem with the STM32G030.

My microcontroller is drawing 1.5 mA of current in standby mode. I really can't figure out why. When I put it into stop mode, it draws 25 uA, which is fine, but I can't understand why it's drawing so much more in standby mode. Can you help me?

 

[Sarra.S]

Hello @Garslanbay, 

I don't think you're entering standby mode, can you share your code? 

[Garslanbay]

When I loaded the same code onto my STM32F072 Discovery board, I measured a current of 2 uA.This is enough for me.i will upload code later.i dont have it now.the code is in my computer.

[Garslanbay]

 HAL_Init();

 /* USER CODE BEGIN Init */

 /* USER CODE END Init */

 /* Configure the system clock */
 SystemClock_Config();

 /* USER CODE BEGIN SysInit */

 /* USER CODE END SysInit */

 /* Initialize all configured peripherals */
 /* USER CODE BEGIN 2 */

 /* Enable Power Control clock */
 __HAL_RCC_PWR_CLK_ENABLE();

 /* Check if the system was resumed from Standby mode */ 
 if (__HAL_PWR_GET_FLAG(PWR_FLAG_SB) != RESET)
 {
 /* Clear Standby flag */
 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_SB);

 /* Check and Clear the Wakeup flag */
 if (__HAL_PWR_GET_FLAG(PWR_FLAG_WUF2) != RESET)
 {
 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WUF2);
 }
 }

 /* Insert 5 seconds delay */
 HAL_Delay(5000);

 /* The Following Wakeup sequence is highly recommended prior to Standby mode entry
 - Enable wakeup
 - Clear wake up pin flag depending in edge detection & pin level.
 - Enter the Standby mode.
 */
//Here is my nNRF24L01 and LIS2DW12TR codes.i also deactivate those code then i check again result is same.
 HAL_PWR_EnableWakeUpPin(PWR_WAKEUP_PIN2_LOW);

 /* Clear all related wakeup flags*/
 __HAL_PWR_CLEAR_FLAG(PWR_FLAG_WUF2);

 /* Enter the Standby mode */
 HAL_PWR_EnterSTANDBYMode();

[Garslanbay]

Are there any units I need to deactivate before entering Standby mode?

[Sarra.S]

Hello again @Garslanbay, 

I'm suspecting a current draw from the pins connected to external components, what do you mean by "I am unable to set these pins as pull-up or pull-down."? 

Also for a reference, you can check this article: Tips for using STM32 low-power modes