About pema

pema · 2024-08-26

Hi guys,I been working on this project for some time now on my "free time"...but so far without any success.In the first prototype I have assembled all the peripherals(QSPI, eMMC, SDRAM, some I2C and SPI slaves peripherals and DSI display.).Nothing s...

pema · 2024-07-15

Hi there,this is my first post here. So be gentle with me ;)I been working on a project with STM32H757XIH6 for some time now, but without any success. This is already my 2nd prototype and costed me quite some $$ since it had to be a 8 layer PCB. The ...

pema · 2024-09-02

Hi @BarryWhit thank you for the links . I will review the design once again, and perform a "just" MCU prototype to make sure the MCU schematic is correct.Thank you for the UART bootloader tip. I forgot about that one. I could probably even use the US...

pema · 2024-09-02

Hi @STOne-32 thanks for the input. I noticed that when I make some pressure on the chip the power consumption spikes. So I am guessing bad soldering.I will make a new prototype with just a MCU. This way I can step by step rule out the causes of failu...

pema · 2024-07-16

Hi @TAtte.1 I am also trying to use this MCU with the SMPS disabled.Do you still think that the reference manual is wrong ? I already invested a 2nd PCB prototype on this and still cant get it to work.Hi @KVan .2 did you manage to get it to work wit...

pema · 2024-07-15

Hi @tjaekel ,yes you are correct my chip as SMPS and yes I am trying to connect it without the SMPS and just LDO active.According to the reference manual this should be possible. Yes I should have chose a package without SMPS, but when I started work...

pema · 2024-07-15

Hi @TDK , yes you are right ...I assume I could try by leaving it floating for the moment. Since these BGAs are very tricky to "remove pins".to solder.Thank you very much !

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STM32H7 Custom Project Schematic review help

STM32H7 Custom Project prototype , power issues

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Re: STM32H7 Custom Project Schematic review help

Re: Anyone know how to disable the SMPS on STM32h757 when only using the LDO?

Re: STM32H7 Custom Project prototype , power issues

Re: STM32H7 Custom Project prototype , power issues