STM8AF2588 supply current in halt mode

[Holger G. (holger_g952)]

Hi, I use a PCB that is reduced to one STM8AF5288 and 3 100nF Capacitors 
at the supply pins. No other components, all are removed. I supply it 
with 3,3V. I want to reduce current consumption in halt-mode to 4,5µA 
(datasheet). My current consumption in halt mode is:
- 350µA @ 3V
- 550µA @ 3,3V
- 1050µA @ 3,7V
Here is my code, can anyone please help? I am really in trouble.
Thank you very much,
Holger

void main(void)
{
    CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV8); // 2 MHz
    GPIO_Init(GPIOA, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT);
    GPIO_Init(GPIOB, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT);
    GPIO_Init(GPIOC, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT);
    GPIO_Init(GPIOD, GPIO_PIN_ALL, GPIO_MODE_IN_PU_NO_IT);
    ADC1->CR1=0x00;
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_ADC, DISABLE);
    //Only Timer 1, 2 and 4 seem to exist
    TIM1->CR1=0x00;
    TIM2->CR1=0x00;
    TIM4->CR1=0x00;
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER1, DISABLE);
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER2, DISABLE);
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_TIMER4, DISABLE);
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_AWU, DISABLE);
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_UART1, DISABLE);
    UART1->CR1 = 0x20;
    UART1->CR3 = 0x00;
    #define CAN_MCR  (*((volatile uint8_t*)0x5420))
    CAN_MCR = 0x02;
    //CAN->MCR = 0x02; //This does not work, the above code is a 
workaround
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_CAN, DISABLE);
    SPI->CR1=0x00;
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_SPI, DISABLE);
    I2C->CR1 = 0x00;
    CLK_PeripheralClockConfig(CLK_PERIPHERAL_I2C, DISABLE);
    IWDG->KR =0x00;
    WWDG->CR=0x00;
    AWU->CSR = 0x00;
    FLASH->CR1=0x00;
    abschalten();
    disableInterrupts();
    CLK->CKDIVR = 0xFF; // max. Prescaler für CPU und Peripherie
    __asm__("halt");
    while (1)
    {
    }
}

[Rolf (rolf22)]

Holger G. schrieb:
> Here is my code

In which line the MVR is being disabled?

[Cartman E. (cartmaneric)]

Switch to LSI/LSE-clock during Halt and disable HSI if possible.

[Holger G. (holger_g952)]

Hi, I found the cause of high current. It is a wiring bug: I connected 
V_CAP to 3,3V. V_CAP must be 1,8V, there must only a capacitor be 
connected to V_CAP. So please close the topic. Thank you for your help.

[Holger G. (holger_g952)]

MVR is disabled in halt() automatically, it can only be disabled for 
active halt.