STM8L051F3 Halt Mode 300-400nA

[Omkar Teli]

Posted on January 24, 2018 at 12:10

Hi,

   I looking to achieve lowest power consumption in halt mode.

Datasheet says we can achieve 350nA in halt

mode. I am able to achieve

195 uA(micro Amp) at 1.8V

.. I have written simple test code. FYI i am adding my code below which is written in STVD IDE and attached project folder also.

How can i achieve 350nA? Plz help me

Code:main.c

/* Includes ------------------------------------------------------------------*/

&sharpinclude 'stm8l15x.h'/* Private macro -------------------------------------------------------------*//* Private variables ---------------------------------------------------------*//* Private function prototypes -----------------------------------------------*/void Delay (uint16_t nCount);/* Private functions ---------------------------------------------------------*/

void GPIO_LowPower_Config(void)

{

/* Port A in output push-pull 0 */

  GPIO_Init(GPIOA, GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3 ,GPIO_Mode_Out_PP_Low_Slow);    /* Port B in output push-pull 0 */  GPIO_Init(GPIOB, GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7, GPIO_Mode_Out_PP_Low_Slow);

/* Port C in output push-pull 0 except Button pins */

  GPIO_Init(GPIOC, GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6, GPIO_Mode_Out_PP_Low_Slow);

/* Port D in output push-pull 0 */

  GPIO_Init(GPIOD, GPIO_Pin_0, GPIO_Mode_Out_PP_Low_Slow);

}

void Halt_Init(void)

{/* Set STM8 in low power */  PWR->CSR2 = 0x2;    /* Stop RTC Source clock */  CLK_RTCClockConfig(CLK_RTCCLKSource_Off, CLK_RTCCLKDiv_1);  /* Stop clock RTC and LCD */       CLK_PeripheralClockConfig(CLK_Peripheral_RTC, DISABLE);}

void main(void)

{    GPIO_LowPower_Config();/* Set GPIO in low power*/      while (1)  {      Halt_Init();        sim();        Delay(10);        halt();  }}void Delay(__IO uint16_t nCount){  /* Decrement nCount value */  while (nCount != 0)  {    nCount--;  }}

&sharpifdef  USE_FULL_ASSERT

/**

  * @brief  Reports the name of the source file and the source line number  *   where the assert_param error has occurred.  * @param  file: pointer to the source file name  * @param  line: assert_param error line source number  * @retval None  */void assert_failed(uint8_t* file, uint32_t line){  /* User can add his own implementation to report the file name and line number,     ex: printf('Wrong parameters value: file %s on line %d\r\n', file, line) */  /* Infinite loop */  while (1)  {}}&sharpendif#stm8l051f3-350na-halt-mode