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Associate II
August 10, 2026
Question

STM32L496RGT6 taking more current while programming on 1.8V

  • August 10, 2026
  • 1 reply
  • 24 views

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. 

 

1 reply

Andrew Neil
Super User
August 10, 2026

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

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.