STM32 MCUs Products

Hi.I'm using an STM32G051 and would like to use 12 ADC channels which are not sequential. I have thus set up the ADC for 'sequencer set to not fully configurable' as show below:Ignore for the moment that IN9 is red, I think I was trying something with one of the comparators to see if that helped.I'm using the DMA to kick off a new conversion and the callback reports back raw values which I print out as seen below.If I enable IN0, IN9 or IN10 then I get bad data from the ADC (possibly mixed up channels) as seen below where the VREF+ is being reoprted as over 5V when it should be 3.3V.VREF+: 5362 mV.

Hello, Is my understanding correct that it's impossible to internally detect short (<100ns) drops of VCORE internally? Reading RM0481 page 154 it seems impossible to directly monitor VCORE through the tamper mechanism which I assume forces the use of an ADC+WDG, which probably puts the detection range in the µs? Which means the target is sensitive to fault injections?

I realise one cannot disable the watchdog, short of a full reset.One method would be to leave a "magic number" somewhere, say in one of the RTC locations, do a reboot, and if that is found at power-up, you don't enable the watchdog and you perform a shutdown, using the WFI etc method.But that's not really the point, and it is not safe.I wonder what would be the most effective thing possible. The watchdog will still be tripping so probably the best way would be to select slowest clock (I have a 25MHz external xtal and a 32768Hz external RTC xtal) and stay in a loop pulsing the watchdog. What is the best way to do this? Perhaps switching to the 16MHz internal oscillator and setting the PLL for the slowest clock?Any tips much appreciated.

Heyho,playing with the L073, partitioned the flash for bootloader "BL" (bank 1) and application (bank 2).No writing of app yet, just testing jumping back and forth.I just added a no-init variable for communication between BL and app, mainly to tell the BL to not jump back to app if the app requested so.at power up / reset, the uninitialized variable "u32AppRqstBootloader" is 0, so the BL jumps to the app, and just for checking: before the jump the BL sets u32AppRqstBootloader = 0xB0072ABBin the app u32AppRqstBootloader is printed via UART, and it shows the expected 0xB0072ABB, the printf is done immediately and takes ~ 2 ticks (1 tick = 1 ms)now I let the app jump to BL, before the jump the app sets u32AppRqstBootloader = 0xABB1B007 so the BL does not jumpSo far so good...But when the BL now jumps back to the app, all of a sudden in the app there's a ~ 1 second delay before u32AppR

I am currently working on the STM32N6570-DK board for a camera-based project.Development SetupIDE: STM32CubeIDE (Version 2.1.1)Tool: STM32CubeMX (with STM32N6 package installed)Issue 1: Flashing & Boot BehaviorI tested the example GPIO_IOToggle programThe program is flashing and running properlyHowever, after pressing reset, the code is not running againTo make it run:I set BOOT1 = LOW and BOOT2 = LOWAfter reset, the AI demo code runs insteadMy requirement:How to properly flash the user application into internal flash memoryAfter reset, the same user code should run automaticallyIssue 2: Required Examples / GuidanceI need guidance or reference examples for the following:1. ST-LINK V3EC configurationSerial communication setup for debugging (UART / Virtual COM)Camera InterfaceCamera bring

AN2606 indicates that I should be able to activate the built in boot loader by jumping to the correct address in ROM, but I can't work out what that address is for the STM32U535CB. 

Hello everyone,I develop a project with STM32U575 and I want to use LPUART with LPDMA, normally I use LPUART with normal DMA in my other stm32L4 projects but here I couldnt work with this peripherals. Low power is not a critical issue of this part of project. So I just want to use LPUART with LPDMA in a normal way. First picture is my old settings in L4 series and second picture ise for current U5 mcu. Do I miss something ? Where can I find and example for LPDMA and LPUART for Standart Request Mode. Thanks

Dear STMicroelectronics Team,I am looking for an STM32 microcontroller for a new project. My main requirements are:At least 4 SPI interfacesAt least 2 USB interfacesCould you please suggest suitable STM32 part numbers that meet or come close to these requirements?Thank you for your support.Best regards,DZ

Hi all,We have a product using a STM32L451CEU6. We have gone through low rate initial production and it has met requirements but the customer has requested a change. We are experimenting with increasing the system clock speed the device is running at by changing the internal PLL settings. The device is running from the HSE, a 25 MHz crystal oscillator. It works without issue in the baseline clock configure shown below. When we try and change the N multiplication values in the PLLs to any other value, something appears to go wrong during the setup phase of our application code, a

Hi. I'm looking for an STM32 with a lot of GPIO triggered DMA channels. I need 8 channels that trigger when a pin changes state, and which can read/write to GPIO registers and DMA registers. It's for implementing a bus interface where I need to read address pins and write them into the lower 16 bits of DMA address registers, and use pin transitions to trigger GPIO state changes (GPIO data values, GPIO direction bits). Are there any parts that can do that? The M0+ series doesn't have enough DMA channels that can be triggered by GPIOs. The M3 and M4 doesn't seem to allow triggering from GPIOs.

Hi,Any reason why the GBW of the OPAMP is having such a wide tolerance? Is it purely because the values are best-worst case design calculations?In comparison, the Gx and Fx variants has better limits.

Hi,I am using STM32G070RB for a modbus based product. The code is complete but i am facing issues that on some of the controller the code does not work and it gets stuck in the HAL_DELAY() function because the systick interrupt are not getting through.Strange and concerning thing is that the code works on many controllers without problem but on few of them random controllers we are facing this issue.I have tried setting the nBOOT_SEL, nBOOT1 and nBOOT0 in the code so that the vector table address get set correctly.void ConfigureBootToUserFlash(void) { // Unlock the Flash memory control register if (HAL_FLASH_Unlock() == HAL_OK) { // Unlock the Option Bytes if (HAL_FLASH_OB_Unlock() == HAL_OK) { FLASH_OBProgramInitTypeDef obInit = {0}; // Read current option bytes HAL_FLASHEx_OBGetConfig(&obInit); // Check if nBOOT_SEL and nBOOT0 are already configured if (!(obInit.USERConfig & FLASH_OPTR_nBOO

Heyho,I'm currently designing a new modular system, with an STMH7 on the base-card. That one's basically up and running, including a self-made bootloader.Now I'm working on some new modules, these will be connected to the "base H7", probably via I2C, 2 extra UART lines might also be possible.The previous system used ATmega-MCUs on the modules, now we'll surely use some STM32 type. These modules will not do any DSP or computing, so a "small" STM32 will do (tending towards L07x because of the EEPROM).To save some dev time I'm thinking about using the internal bootloader for the module MCU, controlled by the base H7.I have checked the application notes (AN2606 and the ANs depending on the BL interface), also found the example source code from ST on Github.So far that looks okay and doable, nevertheless user experience always wins over "reading". :DSo...Anybody using the ST bootloaders in some real-life products ?

Hello Team,We are planning to use MCU P/N: STM32N657X0H3Q for our new design. We want to perform thermal simulation. Could you please help us for how to calculate power dissipation?Thanks.

Heyho,I think I need some more info about the internal bootloader ("BL") which I didn't find in AN2606 or AN3155 (UART). a) Are all BL interfaces active / scanned at the same time, and any interface finding any change in level will be "chosen"?From what I have found, it is crucial to keep unused IOs "quiet". b) Does the BL have some "start-up timeout", meaning that it will stop scanning the IOs, and / or jump to the application? Thanks in advance!

Hello everyone,I was reviewing the AN4899 Application Note and noticed a potential logic inconsistency that might lead to misunderstanding the GPIO output stage. I have prepared a short analysis and a proposed correction below. I would appreciate it if the technical team could take a look. IntroductionThis report investigates a potential logic inconsistency identified in the STMicroelectronics AN4899 Application Note. The analysis suggests that the logic gates in Figures 15, 16and 17 might be drawn incorrectly, specifically the part controlling the P-MOS transistor. Due to the structural similarities between these figures,

Hi, What is the official moisture sensitivity level (MSL) for STM32F072CBT6TR? I found conflicting information showing both MSL 2 and MSL 3.

 Hello ST Community,I’m currently trying to select the right MCU/board from the STM32H7 series, but I’m a bit confused between the following options:STM32H723STM32H725STM32H735STM32H7A3VGT6My requirements:Need CORDIC support for fast math operationsRequire high-precision calculations (double precision floating point)Planning to implement a high-performance data processing pipeline (DPU-like workload)Would prefer a board with good STM32CubeH7 example supportMy confusion:Do all the above MCUs support CORDIC, or only specific variants?Is double precision (64-bit floating point) actually supported in hardware on these devices, or only

Hoping someone can assist.I have a 2 x 8 segment numerical glass LCD that I want to drive from the MCU.See two images below & uploaded files with this request.snippet from LCD data sheet.snippet from CubeMX pin out view.This display is Static with total of 16 segments.Is there a convention when connecting LCD segments to the MCU pins?I cannot seem to find any guidance to show which physical pin on the glass segment LCD module needs to connect to which LCD_SEGxx pin on the MCU. If anybody has trialed this, could they provide any related information please. 

Post edited by ST moderator: title and post edited to translate the content. 我在stm32F412RGT6的数据手册的6.1.6部分看到关于滤波电容的描述，2. The 4.7 µF ceramic capacitor must be connected to one of the VDD pin.从图中来看是以144PIN的芯片为例，但我使用的是64PIN的封装，是否也需要在其中一个VDD引脚放置4.7uf的电容，如果需要，是单独放置一个4.7uf还是与一个0.1uf并联放置 Translation: "In section 6.1.6 of the STM32F412RGT6 datasheet, regarding filter capacitors, it states: "2. The 4.7 µF ceramic capacitor must be connected to one of the VDD pins." The diagram shows this for a 144-pin chip, but I'm using a 64-pin package. Do I also need to place a 4.7 µF capacitor on one of the VDD pins? If so, should I place a single 4.7 µF capacitor or connect it in parallel with a 0.1 µF capacitor?"

Both 'U5 ADCs contain the LFTRIG bit; however, I could not find in either 'U5 datasheet the Tidle value above which this bit has to be switched on.JW 

I'm using the STM32G474 at 170MHz. Is it possible to simulate hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV512; since the G474  only recognizes up to ADC_CLOCK_ASYNC_DIV256; I need very slow readings from the ADC. Thank you Valter

Dear Community, I am researching how to use a 50Mpx MIPI CSI-2 2 LANE RAW 10 sensor with stm32N647.The idea is not to use the full sensor, instead using analogue/digital crop and windowing on the sensor to capture a specific part of the image and downsize it to a smaller size before entering the ISP of the MCU. The sensor doesn't have scaling.So after all steps I am left with a frame size that varies from 11.4 to 2.4 Mpx depending on cases.From there the image needs to be downsized to a buffer with a maximum size of 1024x768 px for the display.The question is whether the scaling of the ISP of the STM32N647 can handle downsizing and at what cost. The ISP is rated at 5Mpx 30fps but specifies it is possible above, the datasheet is vague about this.Thanks for the help.

Hi all, I have reached the point of desperation, and I am all out of ideas how to get my STM32U031 project working.I designed a very simple PCB which has only a few components. I have attached the KiCad files in case it is helpful. I followed guidelines for decoupling capacitors and broke out the SWDIO and SWCLK pins. The issue I have is this: I can not program/connect to the chip over SWD. When I power the PCB from 3V, the first noticeable problem is GPIO PA3 goes high. You can notice that because that pin is connected to the gate of a mosfet which is used to switch some LEDs, so when it goes high, the LEDs turn on. It is especially strange because I put an external pulldown resistor on the pin, so the fresh unprogrammed MCU is driving it high for some reason. I also connected my ST Link to the PCB, but when I try to connect with any speed or reset settings, I see this error:02:27:47 : UR connection mode is defin

Hi,I have made up six boards and three of them had an unusually high standby current (35mA instead of 1mA).Eventually, when the IC was removed, we found Pins 5 & 6 of the removed IC were shorted internally (0.3R)They were also shorted to pin 45 with 3.7R. The other two boards are showing similar shorts.The board worked fine with a new MCU.Does anyone know what might cause this short?TIA,Patrick.