The model STM32F303RET6 belongs to the STMicroelectronics brand. This model is part of the STM32F3 series of microcontrollers, which are based on ARM Cortex-M4 architecture.
The STM32F303RET6 features a LQFP-64 package, meaning it has 64 pins. Below is a detailed explanation of the pin functions, specifications, and circuit principle instructions for the STM32F303RET6.
Pin Function Table for STM32F303RET6 (LQFP-64)
Pin Number Pin Name Function Description 1 VDD Power supply (3.3V) Power pin that connects to 3.3V source. 2 VSS Ground Ground pin. 3 NRST External reset External reset pin, active low. 4 PA0 ADC1IN0, TIM2CH1, USART2TX, SPI1SCK Analog input, timer, UART, or SPI functionality. 5 PA1 ADC1IN1, TIM2CH2, USART2RX, SPI1MISO Analog input, timer, UART, or SPI functionality. 6 PA2 ADC1IN2, TIM2CH3, USART2CK, SPI1MOSI Analog input, timer, UART, or SPI functionality. 7 PA3 ADC1IN3, TIM2CH4, USART2_CTS Analog input, timer, or UART functionality. 8 PA4 ADC1IN4, TIM3CH1, I2C1_SDA Analog input, timer, or I2C functionality. 9 PA5 ADC1IN5, TIM3CH2, SPI1_SCK Analog input, timer, or SPI functionality. 10 PA6 ADC1IN6, TIM3CH3, USART1_RX Analog input, timer, or UART functionality. 11 PA7 ADC1IN7, TIM3CH4, USART1_TX Analog input, timer, or UART functionality. 12 PB0 ADC2IN8, TIM3CH1, SPI1_MISO Analog input, timer, or SPI functionality. 13 PB1 ADC2IN9, TIM3CH2, SPI1_MOSI Analog input, timer, or SPI functionality. 14 PB2 ADC2IN10, TIM3CH3, USART1_TX Analog input, timer, or UART functionality. 15 PB3 ADC2IN11, TIM3CH4, USART1_RX Analog input, timer, or UART functionality. 16 PB4 ADC2IN12, SPI1SCK Analog input, SPI functionality. 17 PB5 ADC2IN13, SPI1NSS Analog input, SPI functionality. 18 PB6 ADC2IN14, TIM4CH1 Analog input, timer functionality. 19 PB7 ADC2IN15, TIM4CH2 Analog input, timer functionality. 20 PC0 ADC3IN0, TIM8CH1 Analog input, timer functionality. 21 PC1 ADC3IN1, TIM8CH2 Analog input, timer functionality. 22 PC2 ADC3IN2, TIM8CH3 Analog input, timer functionality. 23 PC3 ADC3IN3, TIM8CH4 Analog input, timer functionality. 24 PC4 ADC3IN4, I2C1SCL Analog input, I2C functionality. 25 PC5 ADC3IN5, I2C1SDA Analog input, I2C functionality. 26 PD0 ADC3IN6, USART3TX Analog input, UART functionality. 27 PD1 ADC3IN7, USART3RX Analog input, UART functionality. 28 PD2 ADC3IN8, I2C2SCL Analog input, I2C functionality. 29 PD3 ADC3IN9, I2C2SDA Analog input, I2C functionality. 30 PD4 ADC3IN10, SPI2MISO Analog input, SPI functionality. 31 PD5 ADC3IN11, SPI2MOSI Analog input, SPI functionality. 32 PD6 ADC3IN12, SPI2SCK Analog input, SPI functionality. 33 PD7 ADC3IN13, SPI2NSS Analog input, SPI functionality. 34 PE0 ADC3IN14, I2C2SCL Analog input, I2C functionality. 35 PE1 ADC3IN15, I2C2SDA Analog input, I2C functionality. 36 PE2 External interrupt (EXTI2) External interrupt. 37 PE3 External interrupt (EXTI3) External interrupt. 38 PE4 External interrupt (EXTI4) External interrupt. 39 PE5 External interrupt (EXTI5) External interrupt. 40 PE6 External interrupt (EXTI6) External interrupt. 41 PE7 External interrupt (EXTI7) External interrupt. 42 VDDIO2 3.3V supply for I/O Power pin for I/O. 43 VBAT Battery input pin Pin for connection to a battery. 44 BOOT0 Boot mode selection pin Determines the boot mode of the microcontroller. 45 BOOT1 Boot mode selection pin Determines the boot mode of the microcontroller. 46 SWDIO Serial Wire Debug I/O Serial Wire Debug I/O for programming and debugging. 47 SWCLK Serial Wire Debug Clock Serial Wire Debug clock pin. 48 NRST Reset pin External reset pin. 49 PA8 MCO (Microcontroller Clock Output) Clock output. 50 PA9 USART1_TX USART TX. 51 PA10 USART1_RX USART RX. 52 PA11 SPI2_MISO SPI MISO. 53 PA12 SPI2_MOSI SPI MOSI. 54 PA13 SPI2_SCK SPI SCK. 55 PA14 SPI2_NSS SPI NSS. 56 PA15 SPI1_NSS SPI NSS.Pin FAQ for STM32F303RET6
Q1: What is the total number of pins on STM32F303RET6? A1: The STM32F303RET6 has a total of 64 pins in the LQFP-64 package.
Q2: How is the reset functionality controlled on the STM32F303RET6? A2: The reset functionality is controlled via the NRST pin, which is active low.
Q3: What are the voltage requirements for the STM32F303RET6? A3: The STM32F303RET6 operates on a 3.3V power supply (VDD) with a ground (VSS) pin.
Q4: Can the STM32F303RET6 be used with a battery? A4: Yes, it has a VBAT pin for connecting a battery to maintain real-time clock operation and other essential functions.
Q5: What is the purpose of the SWDIO and SWCLK pins? A5: These are used for Serial Wire Debug (SWD) programming and debugging.
Q6: How does the STM32F303RET6 handle external interrupts? A6: The STM32F303RET6 supports external interrupts via pins like PE2 to PE7, which can be configured to trigger interrupts on various events.
Q7: What communication interface s are supported on the STM32F303RET6? A7: It supports multiple communication interfaces including SPI, I2C, UART, and CAN.
Q8: What is the function of the BOOT0 and BOOT1 pins? A8: These pins are used to select the boot mode of the microcontroller, determining whether it will boot from Flash or another memory source.
Q9: Can I use the PA8 pin for clock output? A9: Yes, PA8 can be used for the microcontroller clock output (MCO).
Q10: What is the function of the VDDIO2 pin? A10: VDDIO2 is a 3.3V supply pin specifically for powering I/O pins.
Q11: How many ADC channels does STM32F303RET6 support? A11: It supports a 12-bit ADC with 16 channels.
Q12: How many timers does STM32F303RET6 have? A12: It has a variety of timers, including 16-bit timers (TIM2 to TIM5) and 32-bit timers (TIM8).
Q13: Can the STM32F303RET6 be used for analog-to-digital conversion? A13: Yes, the microcontroller supports multiple ADC inputs via pins like PA0 to PA7 and others.
Q14: What is the purpose of the PA14 pin? A14: PA14 can be used for SPI1_NSS (Slave Select).
Q15: What are the features of the PA1 pin? A15: PA1 can serve as an ADC input, timer input, or UART RX.
Q16: Is there any support for I2C on the STM32F303RET6? A16: Yes, the microcontroller supports I2C functionality through pins like PA4, PA5, PB6, and PB7.
Q17: Can the STM32F303RET6 operate with multiple power sources? A17: Yes, it has VDD, VBAT, and VDDIO2 pins for different power sources.
Q18: What is the maximum clock frequency for STM32F303RET6? A18: The maximum clock frequency is 72 MHz, driven by the ARM Cortex-M4 core.
Q19: Can I use the STM32F303RET6 for motor control? A19: Yes, it has specialized timers and ADCs that make it suitable for motor control applications.
Q20: How do I reset the STM32F303RET6? A20: You can reset the microcontroller by pulling the NRST pin low.
This table and FAQ provide a comprehensive overview of the pin functions and circuit instructions for the STM32F303RET6 microcontroller in a LQFP-64 package.
