Introduction to STM32 Microcontroller

Hello, friends welcome to another interesting post. In today’s post, we will have a detailed look at the Introduction to STM32 Microcontroller. This type of microcontroller belongs to the thirty-two-bit microcontroller ICs created by STMicroelectronics (which is a French Italian multinational electronic producer whose head office is located in Geneva). The most commonly used series of STM32 are Cortex-M7F, cortex-M33F, CortxM3, etc all these have the same thirty-two-bit ARM processor core.

In the interior structure of these microcontroller processor cores, static RAM and flash memory are assembled with some other devices. In today’s post, we will have a detailed look at its working applications, pinouts, and some other related parameters. So let’s get started with Introduction to STM32 Microcontroller.

Introduction to STM32 Microcontroller

• The STM32 is a very common type of microcontroller used in numerous types of devices. It also provides facilities for linking with other types of microcontrollers.
• The STM32 series of MCUS which was created by STMicroelectronics consists of an ARM Cortex-M thirty-two-bit processor core.
• In this microcontroller series and parallel communication system exit through which numerous external devices such as cameras, sensors, motors, etc can be connected.

• Every STM32 MCU also consists of inner flash memory and random access memory.
• The operation range offered by the STM32 is a little bit costly. There are subseries of STM32 like STM32F0 and STM32f1 which operate with the clock signal of having a frequency of twenty-four megahertz and exits in a casing having sixteen pinouts.
• Another category of STM32 series is STM32H7 which works at the four hundred megahertz frequency and exits in a casing having two forty pinouts.
• There are some types of STM32 exits which used are exist with the floating-point unit or FPU and are used in high-level numerical processing applications.
• These modern categories of MCUs have some features of microprocessors with the microcontrollers.
• For such applications that operate on less power or are portable devices, the STM32L series is created.

Features of STM32

• These are some features of STM32 which are described here in detail.
• In this module flash memory, up to one megabyte is used.
• An OTP of five hundred and twelve is used in this module.
• Static random access memory of one twenty-eight byte is used in these modules.
• To provide support to the flash memory static RAM PSRAM flexible static memory controller is used.
• Its operating voltage is from 1.8 volts to 3.6 volts.
• The crystal oscillator of four to twenty-six megahertz is used in this module.
• It has an inner sixteen megahertz factory-trimmed RC.
• It uses a thirty-two-kilo hertz oscillator for RTC (Real-Time Clock).
• It has an inner thirty-two kilohertz RC after calibration.

• The modes which it has are sleep stop and standby modes.
• The battery is used to provide back to the RTC, 20 by 32 backup registers, and four kilobytes of static ram.
• This module consists of 3 by 12-bit o. 5-microsecond analog to digital converter having twenty-four channels.
• It consists of 12 sixteen-bit and 2 thirty-bit timers.
• It comprises of one thirty-six inputs and outputs having a frequency of sixty hertz.
• It has one thirty-eight input and outputs operating at five volts
• This module consists of 3 I2c interfacings.
• It has 4 USART and 2 UART and 3 SPI.

Difference between STM32 microcontroller and 51 microcontroller

• 51 microcontroller is used collective name for all controllers that support the ntel8031 instruction system.
• The older modules controller series is Intel’s 8031 microcontroller, with advancements in flash ROM technology, The 8031 Single-chip controller is made with the latest features and mostly uses 8bit One of the single-chip microcomputers, with equivalent mode isAT89 series of ATMEL company.
• STM32 microcontroller is a 32-bit series controller made by St with the use of cortex -M3 of arms company as the core. its inner design like registers and peripheral functions are higher than 8051, AVR and PIC.
• It is close to the CPU of a computer and is best for mobile phones, routers,

Disadvantages of 51 MCU

• Some functions like AD and EEPROM needed expansion that caused overburden for hardware and software.
• Though input and output pins can easily be used but not have output support for high levels, which is a drawback of 51 series single-chip microcomputer.
• Working speed, especially double data pointer is slow. So needed improvement for good working.
• its protection feature is also not good and can burn the chip.

stm32 vs esp32

STM32 Microcontroller PINOUT

• The main pinouts of the STM32 microcontroller are described here with detail.

CN6

• It is a power supply pinout at this pinout 3.3 volts are provided.

RESET PIN

• This pinout is used to reset the microcontroller.

+3.3 volts pin

• From this pinout, 3.3 volts are taken out as output and used to provide power microcontroller.

+5 volt

• It is a five-volt output pinout.

GND

• It is ground pinout.

CN5

• it is a combination of pinouts D8 to D15 these are digital pinouts and used for SPI.

D13, D12. D11 and D10 Pinouts

• These pinouts operate as serial clocks, master in slave out, master out slave in, and SC pinouts for SPI (Serial Peripheral Interface) transmission.

CN9

• These are digital pinouts and are comprised of D0 to D7 pins.

D0 and D1

• These 2 pinouts operate as receivers and transmitters for USART (Universal Synchronous Asynchronous Receiver Transmitter) transmission.

CN7

• These are digital port C pinouts and comprise of PC0, PC1, PC2, PC3, PC10, PC11, PC12, PC13, PC14, PC15.

PD2

• It is port D input-output pinouts.

PA0, PA1, PA4, PA13, PA14, PA15 pinouts

• These are pinouts of port A.

PB7, PB8, and PB9

• These are pinouts of port B.

PH0 and PH1

• These are pinouts of port H.

Applications of STM32 Microcontroller

• These are some common applications of STM32.
• It is used in less power using handheld devices.
• It is used in different types of robots.
• It uses an automation system.

STM32: Equivalents/Alternatives

• GD32 Series
• Nuvoton (NuMicro) Series
• Microchip PIC32 Series
• Silicon Labs EFM32 Series
• Texas Instruments MSP430 Series

What are the special features of STM32?

• Robust Architecture.
• Scalability:
• Rich Peripheral Set:
• Real-Time Capabilities:
• Energy Efficiency:
• Comprehensive Development Ecosystem:
• Security Features:
• Long-Term Availability:

So that is a detailed post about STM32 if you have any further queries ask in the comments, Thanks for reading. Have a good day.