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STM32L011D3 and L6387ED problem

Question asked by Piotr Stopyra on Mar 24, 2018
Latest reply on Mar 25, 2018 by Piotr Stopyra



I'm using STM32L011D3 to control L6397ED driver. Everything works fine until supply voltage on L6387ED drops below threshold voltage (typ. 6V). When voltage drop on driver occurs, supply voltage on microcontroller is stable and equal to 3.3V (tested with an oscilloscope).  Is it possible that when supply voltage on driver drops, it draws relatively hight urrent from microcontrolers GPIOs, what causes microcontroller reset?