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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problem writing to flash for the second time

Posted on May 12, 2018 at 13:57Hello everyone,I have used the following codes to (erase and then ) write to the flash in STM32F103RCT6, the problem is every time i call this function it writes every page only the first time. meaning when called for ...

Pulse counter 80 MHZ.

Posted on May 11, 2018 at 20:37Pulse counter 80 mhz input, on 180 MHZ stm32 F479Hello, I just need to keep count of an external clock input,  wich comes at about 80 mhz.I dont need to be interrupted or anything, just that this count be accessible at...

TIMER TRGO

Posted on May 11, 2018 at 19:27Hello, I am using NUCLEO F429ZI. I am using TIM9 with 2 channel,  channel 1 use for input pulse counter, and channel 2 is output channel to generate a timer based pulse. I try to set TIM9 as master timer using TRGO. My...

Resolved! IO limit voltage of STM32F303RCT6

Posted on June 29, 2017 at 13:50Hello ST engineers,According to the MCU (STM30F303RCT6) datasheet, the absolute maximum rating of IO's Vin is 4.0V (page 56).In our application, operating voltage is 3.3V (Vdd=Vdda=3.3V), but the input voltage of PA0 ...

Lin Zi by Associate II
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STM32F215 VBAT pin

Posted on May 11, 2018 at 13:28Hi all, I'm using a STM32F215 MCU with a supercapacitor (like XH414HG-IV01E;SEIKO) connected to Vbat through a 0 Ohm resistor in order to backup RTC registers. I attach an image:Well. If I measure the voltage in VBAT p...

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timer DMA GPIO input capture with constant frequency

Posted on May 09, 2018 at 08:37 Hello! I need to capture signals on inputs with constant frequency for further investigation. I use the following scheme: set timer frequency needed with update DMA request and capture size for DMA, then get data fro...

EvgenS Po by Associate II
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Error in RM0430 (rev 7)

Posted on May 06, 2018 at 14:15On page 177 the definition of bits 4:0 and 12:8 of RCC_DCKCFGR appear to be incorrect.Should these be PLLI2SDIVQ and PLLSAIDIVQ respectively?

STM32F4 RTC gets bad format values

Posted on May 11, 2018 at 11:16Hi, I'm working with the RTC (LSE source) and I'm getting a bad format value, not a wrong value.I call HAL_RTC_GetTime(&hrtc, &sTime, RTC_FORMAT_BIN); and HAL_RTC_GetDate(&hrtc, &sDate, RTC_FORMAT_BIN); to get the actu...