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A device which includes a central processing unit (CPU), memory, and (generally) an assortment of I/O peripherals (UART, ADC, DAC, general-purpose I/O, I2C, etc.) in a tightly-coupled standalone package.

0
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1answer
I am using 2 fingerprint module to make an attendance machine. Normally i have seen the attendance machines just need the user to put his/her finger on the scanner and it is scanned.. then next perso …
asked Feb 13 by scico111
0
votes
2answers
I wonder if its possible to run a common 16x2 LCD with 3.3v power supply. Its datasheet shows supply voltage = 5V. Are there any 3.3V variants of 16x2 LCD modules?
asked Feb 19 by scico111
0
votes
0answers
I am generating SPWM waveforms using complementary outputs of advance timer. I wonder how can i see the actual sinusoidal waveform on an oscilloscope which is intended from the SPWM output? My MCU is …
asked Jan 28 by scico111
0
votes
2answers
I have used UART RS232 communication between MCUs extensively. Now I need to interface my STM32F407 MCU over RS485 bus with with devices. I have understood few things about RS485 but not-clear about s …
asked Feb 19 by scico111
1
vote
1answer
I have to connect 8 optocouplers as shown in the picture with STM32F407 MCU. These are giving 8 digital signals to the MCU. The supply voltage at the outputs of optocouplers is 5V DC while the STM3 …
asked Feb 14 by scico111
1
vote
1answer
Is it possible to identify looking at the schematics whether a GPIO pin is configured as Input or Output pin for the case in following image? PIN93 and PIN94 of a MCU are connected directly with conn …
asked Feb 14 by scico111
5
votes
3answers
Why isn't there any EEPROM in the STM32F4 series MCUs? Mostly I have Microchip MCUs and they have EEPROM available in them, but I just found out that it is not available in the STM32F4 MCUs... And it …
asked Feb 19 by scico111
0
votes
1answer
I have used Keil uVision and Microchip MPLABX IDE's a lot for various MCUs. Now starting to use Atollic TrueSTUDIO for STM32 MCUs. But even after spending many weeks on trueSTUDIO and building many s …
asked Feb 5 by scico111
0
votes
1answer
I have to replace Renasas M30853 MCU with STM32F407 MCU in a circuit. The earlier MCU uses power supply Vdd = +5V as well as all the analog and digital circuit that is connected with it. How can I use …
asked Feb 11 by scico111
1
vote
1answer
I am new to the STM32 world. I know that all STM32 MCUs come with an internal bootloader. Is it possible to replace it with custom boatloader?
asked Feb 5 by scico111
0
votes
1answer
I wonder if I need to put some circuit between STLINK and STM32F4 MCU to flash it or does it simply require to connect the wires 1:1 directly? I cannot find it in the datasheet.
asked Feb 20 by scico111
0
votes
0answers
This circuit is connected at the NMI input of a MCU. The 'J2s' pin is connected to an external signal. Is it some sort of delay circuit or some filter circuit? Edit: J2s is digital signal coming …
asked Feb 15 by scico111
-3
votes
1answer
I am reading the reference manual page 75 that shows the flash memory organization of STM32F4 MCUs. There is an OTP area of 528 Bytes in it as shown in the image: Is it possible to write on this OT …
asked Feb 20 by scico111
0
votes
0answers
There are 2 software tools provided by ST to flash their STM32 MCUs namely STM32CubeProg and STLINK Utility STM32CubeProg Page says: STM32CubeProgrammer (STM32CubeProg) is an all-in-one multi-OS soft …
asked Feb 20 by scico111
0
votes
2answers
I am new to the STM32 world. I am using [STM32F407VG]1 (100 Pins pkg). I have to select an 8-bit port for connecting 8 digital inputs to the MCU.. but the datasheet shows so many alternate as well as …
asked Feb 14 by scico111

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