STM32L496RGT6 taking more current while programming on 1.8V

[Anuraglokhande]

Hi,

We are using STM32L496RGT6, VDD voltage is 1.8V, our device is low power device, max current available on 1.8V is 13mA. 

We are using Segger flasher for flashing .hex file to MCU by SWD and Speed 4000kHz. 

Now while flashing MCU, it takes around 36mA current. 

Setting as follows, can we reduce programming power by changing any setting in flasher tool. 

 

[Andrew Neil]

During programming, the STM32 is not in a low power mode.

You’ll need to make provision to supply extra power during programming; eg, via the programming connector

[Ozone]

Flashing means pumping energy (electrons) into floating MOSFET gates.
And the flashing process requires about 9...12V, which are generated via an on-chip charge pump with integrated capacities.
The lower the voltage, the higher the current you need.

[Anuraglokhande]

Hi,

 

We cannot change the clock speed of SWD, right? As we see here some settings for SWD speed.