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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STM32F405 ''Held in Reset State'' Problem

Posted on June 02, 2017 at 10:44Hi everyone,I cannot connect the STM32F405RG MCU with ST-Link Utility and IAR Embedded Workbench.I need your help, How can i connect MCU again ?I tried  Connection Settings -->   SWDMode -->             Connect Under ...

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STM32F103 use PB4 and PB5 as USART TX-RX?

Posted on June 01, 2017 at 18:53Hello to the community,Due to an error on a board routing I have ended with a bunch of boards with the RX and TX pins of USART1 incorrectly routed to PB4 and PB5 pins of STM32F103.I wonder if there is any human way of...

Can 5 V tolerant pin be turned off?

Posted on May 30, 2017 at 11:26Hi,I am using the NUCLEO - L053R8 circuit board.I question about 5 V tolerant function.A pull-up resistor driven by 5 V is added to the port of PA_8.In this case, when setting the open drain setting, 0.1 mA flows.Howev...

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help for an optical sensor project

Posted on June 01, 2017 at 13:10HiI am a new ingineer (still student in ingineering school) and I need to test the possibility to use some optical fiber sensor in order to mesure a mouvement (inside a black cavity or by reading a black and white rul...

CAN J1939 bit rate

Posted on June 01, 2017 at 11:40Hi St Community,I’m working on CAN J1939 protocol, with two STM32 F103RB - Nucleo64 and two transceivers (MCP2551). I’m looking for decrease the data rate to 250 Kbits/s but I have no idea of how to do that. Shoul...

How does UART error handling work when using DMA?

Posted on June 01, 2017 at 13:45Hi all:I wonder how UART error handling works when using DMA on an STM32F4xx, although I do use STM32F0xx microcontrollers too.If a parity or frame error pops up, what is the best way to handle it? I guess you cannot ...

Diez.R. by Associate II
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