About Alec1

Alec1 · 2024-05-10

I have a project with a large number of image bitmaps I want to draw to a screen, so have set up an external FLASH IC for storing the majority of these images.I've verified my flash driver works and created an external loader for use in STM32CubeProg...

Alec1 · 2022-05-17

I'm running into an issue while designing a relatively simple custom board with an L031K6T7, where after programming it the current draw exceeds 200mA and eventually breaks to the current limit of the power supply at 800mA.When I assemble the board t...

Alec1 · 2022-06-01

Hi @Piranha , unfortunately despite removing the R48 pull-up resistor the issue has persisted. To begin with I just programmed blink onto the board and it was fine but after programming the L0 several times, activating different parts of the chip/bo...

Alec1 · 2022-05-19

Thank you for your thoughtful answer, I have AN4467 here now and you're right they don't have an external pullup on the NRST pin, however can a 10k pull-up really be what is killing the MCUs each time? One of my colleagues has designs with 100k pull-...

Alec1 · 2022-05-18

Here is the Schematic for the connections to the M0. I've marked that the PA0/MCO trace was cut on the board, and I've also marked that in cube-mx the PC14 & PC15 pins are disabled in cube MX because a 8MHz crystal was mistakenly used where the 32.7k...

Alec1 · 2022-05-18

I will find out whether I can send part of the schematics but I'm definitely not able to inject any negative current as there is no connection between any negative line and the L0. The firmware that is successfully running on the ( now unprogrammable...

Alec1 · 2022-05-18

I cut that PA0/MCO trace after soldering a new L0 to the board and I created a new, blank CubeMX project that I programmed with blink and this successfully downloaded fine with <10mA consumption when the LED is on. I then slowly transferred different...

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How to write .Bin /.ELF file for External Flash loader

Extremely high current draw in L031K6T7

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Re: Extremely high current draw in L031K6T7