Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [st]

STMicroelectronics(It is commonly called ST) is a French-Italian multinational electronics and semiconductor manufacturer headquartered in Geneva, Switzerland. it is Europe's largest semiconductor chip maker based on revenue.

ST was founded in 1957 as Società Generale Semiconduttori, 1987 as SGS-Thomson. the products of this company are Integrated circuits for specific applications, memory (including EEPROM), microcontrollers, transistors, smartcards and etc

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Detect which momentary switch caused a STM32 cpu to wakeup

Edit: This question is wrong. The stm325105 has only one wakeup pin. But other ST-parts has more than one wakeup pin, so the given answer is valid for those. I have a stm32f105 that has two momentary buttons connected to the wakeup inputs. The…
Daniel Näslund
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Cube IDE : Error: unknown type name 'HAL_StatusTypeDef'

I am taking code from a stm32f0 series and trying to convert it to a stm32l4 series dev kit. I have already changed the necessary addresses and include files that I needed to migrate, but I keep on getting the following errors in the…
user150963
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How to program multiple STM32Fs on same PCB

I work in a management roll and only have a very limited electronics knowledge (enough to make simple arduino projects etc). We are working on a product at the moment which has 3 STM32F303s and 2 STM32F103s and the main processor being a AM5718. I…
Newbie Noob
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Is mbed OS suitable for hard real time systems

I have been developing embedded stm applications bare metal along with ST Hal for a few years and would still consider my self a beginner as the process of learning in a bare metal environment can be tedious. My aim is to be able to develop hard…
Hadi Jaber
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What kind of component this is (ST e3 ZOM Y734)?

please help to identify following electronic component from the image: It is clearly seen all symbols: ST e3 ZOM Y734 So it's definitely "STMicroelectronics". However, I could not find any information about this electronic component either on the…
lol lol
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Difference between I2C STM32 HAL functions

I'm using I2C in a project on STM32, and i was wondering what's the difference between HAL_I2C_Master_Transmit and HAL_I2C_mem_write, and the difference between HAL_I2C_Master_Receive and HAL_I2C_mem_read.
DTl
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What does "Low density device" mean? About STM8 / STM32

STM32 and STM8 devices have some types: Low density devices Medium density devices High density devices About what "density" mean? About quantity of periphery or about quantity of flash or something else?
Ilya A
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Minimum connections needed between stm32 MCU and the st-link programmer?

My MCU is stm32L432kc. I've concluded that we need a minimum of 4 connections: SWCLK, SWIO, vcc and gnd. Can someone from here confirm that? And another question is I'm confused how to connect the Vdda/Vref+ pin 5 and the NRST pin4. Do I have to…
Maryam Magdy
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STM32F7 - Quad SPI dummy cycle behavior

I am working with the STM32F767ZIT6. At the moment I am exploring the QuadSPI peripheral. After setting up the peripheral with the following configuration I noticed some undesired behavior of the data lines following the dummy cycles. // PRESCALER …
Michael
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Should I use MBED of ARM or native platform of microcontroller suppliers?

I got a STM32F429I-DISC1 development board from STMicoelectronics and I know MBED support it. So if I want to learn about ARM and develop a commercial product in the future, should I use MBED platform or native platform of STMicoelectronics?
Khanh Quoc Nguyen
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Microcontroller VDD and VSS pins are shorted. Does that mean the MCU is fried?

I recently created my own breakout board for a STM32F030R8T6 MCU. The attached image shows the PCB that I designed for it. There are no components, only top copper tracks that get connected to header pins that is connected onto a…
user150963
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Capacitors for MAX232

I want to use this chip (ST3232CDR) as an RS232 transceiver. The problem is that I want to power the chip using 2 levels of voltage (3.3V and 5.0V) using a simple jumper, but in the datasheet…
A. Kier
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Aren't pull-up / pull-down options documented for STM32F103?

While trying to configure the GPIOs using CMSIS on a NUCLEO-F103RB board, I couldn't seem to find in the reference manual how one is supposed to choose between internal pull-up and pull-down resistors. Page 160 shows the configuration of the CNF and…
Chi
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Parameters when choosing a relay

Is this a good circuit to use as a air condition switch with a help of microcontrollers 5V? What relay to use in this situation? What parameters should I take into consideration when choosing relay?
Junior
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What is this SOIC-8 part from ST?

Marked "393" and "(ST)GZ439" or "6Z439" under conformal coat. Siemens DC/DC PSU section, near a UC3843B current-mode PWM controller, HF transformer, etc. Checked the ST TS393ID datasheet, that is a micropower dual CMOS voltage comparator. …
rdtsc
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