The STM32F031C6T6 is a microcontroller unit (MCU) manufactured by STMicroelectronics. It is based on the ARM Cortex-M0 architecture and is part of the STM32 F0 series.
The STM32F031C6T6 comes in a LQFP-48 package, which contains 48 pins, not 200 pins. I will provide a detailed explanation of the pin functions and their usage for the 48-pin version of this microcontroller.
Pin Functionality of STM32F031C6T6 (LQFP-48)
Pin No. Pin Name Function Description 1 VDD Power supply pin. Connect to +3.3V. 2 VSS Ground pin. Connect to GND. 3 PA13 SWDIO (Serial Wire Debug I/O). Used for debugging. 4 PA14 SWCLK (Serial Wire Clock ). Used for debugging. 5 PA0 GPIO (General Purpose Input/Output). Used as a digital I/O pin. 6 PA1 GPIO (General Purpose Input/Output). Can also be used as ADC input (Analog-to-Digital Converter). 7 PA2 GPIO (General Purpose Input/Output). Can also be used as UART1 TX. 8 PA3 GPIO (General Purpose Input/Output). Can also be used as UART1 RX. 9 PA4 GPIO (General Purpose Input/Output). Can also be used as I2C1 SCL (I2C Clock). 10 PA5 GPIO (General Purpose Input/Output). Can also be used as I2C1 SDA (I2C Data). 11 PA6 GPIO (General Purpose Input/Output). Can also be used as UART1 RX. 12 PA7 GPIO (General Purpose Input/Output). Can also be used as UART1 TX. 13 PB0 GPIO (General Purpose Input/Output). Can also be used as EXTI0 (External Interrupt 0). 14 PB1 GPIO (General Purpose Input/Output). Can also be used as EXTI1 (External Interrupt 1). 15 PB3 GPIO (General Purpose Input/Output). Can also be used as SPI1 SCK (SPI Clock). 16 PB4 GPIO (General Purpose Input/Output). Can also be used as SPI1 MISO (SPI Master In Slave Out). 17 PB5 GPIO (General Purpose Input/Output). Can also be used as SPI1 MOSI (SPI Master Out Slave In). 18 PB6 GPIO (General Purpose Input/Output). Can also be used as SPI1 NSS (SPI Chip Select). 19 PB7 GPIO (General Purpose Input/Output). Can also be used as SPI1 MISO (SPI Master In Slave Out). 20 PC13 GPIO (General Purpose Input/Output). Used as EXTI13 (External Interrupt 13). 21 PC14 GPIO (General Purpose Input/Output). Used as EXTI14 (External Interrupt 14). 22 PC15 GPIO (General Purpose Input/Output). Used as EXTI15 (External Interrupt 15). 23 VDDIO2 Power supply pin for I/O. Connect to +3.3V. 24 VSSIO2 Ground pin for I/O. Connect to GND. 25 PF0 GPIO (General Purpose Input/Output). Can also be used as ADC input. 26 PF1 GPIO (General Purpose Input/Output). Can also be used as ADC input. 27 PF2 GPIO (General Purpose Input/Output). Can also be used as ADC input. 28 PF3 GPIO (General Purpose Input/Output). Can also be used as ADC input. 29 PF4 GPIO (General Purpose Input/Output). Can also be used as ADC input. 30 PF5 GPIO (General Purpose Input/Output). Can also be used as ADC input. 31 PF6 GPIO (General Purpose Input/Output). Can also be used as ADC input. 32 PF7 GPIO (General Purpose Input/Output). Can also be used as ADC input. 33 PF8 GPIO (General Purpose Input/Output). Can also be used as ADC input. 34 PF9 GPIO (General Purpose Input/Output). Can also be used as ADC input. 35 PF10 GPIO (General Purpose Input/Output). Can also be used as ADC input. 36 PF11 GPIO (General Purpose Input/Output). Can also be used as ADC input. 37 PF12 GPIO (General Purpose Input/Output). Can also be used as ADC input. 38 PF13 GPIO (General Purpose Input/Output). Can also be used as ADC input. 39 PF14 GPIO (General Purpose Input/Output). Can also be used as ADC input. 40 PF15 GPIO (General Purpose Input/Output). Can also be used as ADC input. 41 NRST Reset pin. Pull to low to reset the MCU. 42 BOOT0 Boot mode selection pin. Used to select the boot source. 43 BOOT1 Boot mode selection pin. Used to select the boot source. 44 VCAP Voltage regulator capacitor pin. 45 VREGIN Voltage regulator input pin. 46 VBAT Battery pin. Used for the RTC (Real-Time Clock) backup. 47 AVDD Analog power supply pin. Connect to +3.3V. 48 AVSS Analog ground pin. Connect to GND.Frequently Asked Questions (FAQ)
Q1: What is the function of pin PA13 on the STM32F031C6T6? A1: Pin PA13 is the SWDIO pin used for Serial Wire Debug input/output. It is used for debugging and programming the microcontroller.
Q2: Can I use pin PA4 as a regular GPIO? A2: Yes, pin PA4 can be configured as a general-purpose input/output (GPIO), but it can also be used as I2C1 SCL.
Q3: What is the purpose of pin NRST? A3: Pin NRST is the reset pin. It is used to reset the microcontroller by pulling it low.
Q4: Can I use pin PB6 for SPI communication? A4: Yes, pin PB6 is used as the SPI1 NSS (chip select) pin in SPI communication.
Q5: Is it possible to use pin PA1 for ADC input? A5: Yes, pin PA1 can be used as an ADC input for the Analog-to-Digital Converter.
Q6: How many pins are there in the STM32F031C6T6 LQFP-48 package? A6: The STM32F031C6T6 microcontroller in the LQFP-48 package has 48 pins.
Q7: What is the function of pin BOOT0? A7: Pin BOOT0 is used to select the boot mode of the microcontroller. It helps determine whether the microcontroller boots from Flash or System Memory .
Q8: Can I use pin PA0 as a general-purpose input/output (GPIO)? A8: Yes, pin PA0 can be configured as a GPIO for general input/output purposes.
Q9: Is pin PA5 used for I2C? A9: Yes, pin PA5 can be used as I2C1 SDA (data line) in I2C communication.
Q10: What is the function of pin PF0? A10: Pin PF0 can be used as a GPIO or as an ADC input.
Q11: Can pin PB7 be used for SPI? A11: Yes, pin PB7 can be used as SPI1 MISO (Master In Slave Out) for SPI communication.
Q12: How should I connect pin VDD and VSS? A12: Pin VDD should be connected to a 3.3V power supply, and pin VSS should be connected to ground (GND).
Q13: What is the function of pin AVSS? A13: Pin AVSS is the analog ground pin. It should be connected to the ground of the system.
Q14: What is the maximum voltage for VDDIO2? A14: Pin VDDIO2 should be connected to 3.3V, which is the supply voltage for I/O pins.
Q15: Can I use pin PC13 for external interrupts? A15: Yes, pin PC13 is used as EXTI13 (external interrupt 13) and can trigger external interrupts.
Q16: Is pin PF4 available for ADC input? A16: Yes, pin PF4 can be used as an ADC input for the Analog-to-Digital Converter.
Q17: What is the role of pin VCAP? A17: Pin VCAP is used to connect a capacitor for the voltage regulator to stabilize the supply voltage.
Q18: What should be connected to pin VBAT? A18: Pin VBAT is used to power the RTC (Real-Time Clock) and should be connected to a battery.
Q19: How can I reset the STM32F031C6T6? A19: The NRST pin should be pulled low to reset the microcontroller.
Q20: How is pin PA2 used for UART? A20: Pin PA2 can be used as the UART1 TX (transmit) pin for UART communication.