STM32 MCUs products

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New possibilities for the ultra-low power segment!

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code pro...

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Resolved! STM32H753ZI Internal pull up resistors not doing anything?

Hey guys,Kinda pulling my hair out as to why the pull up resistor is not kicking in? I am expecting when the MCU boots up to see a nice high signal on PA4, but nothing. I am not sure what I am doing wrong. if I write a 0x01 into ODR it then pulls up,...

CLeo1_0-1687967788184.png CLeo1_1-1687967821007.png
CLeo.1 by Senior II
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  • 4 replies
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Reading RPM from Motor using hall encoder

I am trying to implement a code that can read the velocity of a DC motor with built in encoder. I am using STM32 F446RE and a CQrobot motor equipped with an Hall encoder.. specifications below:http://www.cqrobot.wiki/index.php/DC_Gearmotor_SKU:_CQR37...

totino5 by Associate
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Resolved! DMA access on M7 Device

I'm using a STM32H745 MCU, with two processors, one of which is an M7. With the M7 I have problems with the DMA, I have seen that it is a very discussed topic on the internet, where there are many solutions, but I still have some doubts: I would like...

FMass.1 by Associate III
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  • 1 replies
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CANBUS Working on Loopback but not in normal

I am trying to set up a CANBUS connection between two STM32L4 Microcontrollers and while having has been setup correctly and none of the microcontrollers are sending error messages I cannot seem to get a Receive message from either CAN transceiver.Th...

External power supply STM32L432KC

Hello,I was experimenting with the L432KC board. While connected to the computer everything worked fine, but as soon as I tried to use an external power supply everything stopped working. More specifically the board's led LD1 slowly flashes when conn...

Resolved! Fluctuations in ADC value of STM32H743 MCU

Hi,I have been working with STM ADC’s from quite a long time. I had used STM32F373 and F4 series MCU ADC’s earlier for my applications. As, now my application requires huge amount of RAM, memory and computation speed I have shifted to STM32H743 MCU ....

James1 by Associate II
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  • 26 replies
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DMA - from SPI to DAC - 16 bit

Hi,I use DMA for transfer data from external flash memory to DAC for playing sounds - in 8 bits mode like that:1) TIM6  gives impulses to DMA_1 - which transmit  dummy byte to external flash in 8 khz intervals (Fsampling of sound). External flash alw...

JR2963 by Senior
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  • 2 replies
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Multiple pulses are generated on GPO pin for ST25DV64KC micro, when NFC enabled mobile is kept near the antenna, it is expected to have only two pulses for RF activity entry and RF activity exit conditions

Hi,I am using ST25DV64KC micro for NFC communication interfaced with SAML micro controller. I have kept the setting for GPO signal as I should two pulses for every RF read/write session, first one indicating RF field is active and another one indicat...

SSBH by Associate
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  • 1 replies
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We get a constant square wave on USART2_TX (PA2) on some of our STM32L451CEU6TR products. This seems to happen sometimes after a power cycle (brown-out). The square wave is a around 32kHz.

As mentioned, this only happens on a few of our units, and after it has happened it doesn't seem to go away. It comes back after a power cycle event or a reset. One of the first thing we do, is to write on the UART, but we never see this, the oscilla...

na by Associate II
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  • 30 replies
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