STM32F302CBT6 Detailed explanation of pin function specifications and circuit principle instructions

The STM32F302CBT6 is part of the STM32 family by STMicroelectronics, a well-known manufacturer of microcontrollers and semiconductors. Specifically, the STM32F302CBT6 is based on the STM32F3 series, which is an ARM Cortex-M4-based microcontroller designed for mixed-signal applications, with enhanced analog features.

Package Type

The STM32F302CBT6 comes in an LQFP-48 package. LQFP stands for Low-profile Quad Flat Package, which is a surface-mount package with leads on all four sides.

Pin Functionality and Full Pinout Description

Below is a table summarizing the detailed pinout functionality for the STM32F302CBT6 microcontroller in the LQFP-48 package, outlining each pin's function.

Pin Number Pin Name Function Description 1 VSS Ground 2 VDD Power Supply (3.3V) 3 NRST External Reset Pin 4 PA13 SWDIO (Serial Wire Debug Input/Output) 5 PA14 SWCLK (Serial Wire Clock ) 6 PA15 JTDI (JTAG Test Data Input) 7 PB3 JTDO (JTAG Test Data Output) 8 PB4 nTRST (JTAG Test Reset) 9 PB5 SCK (SPI Clock) 10 PB6 MISO (SPI Master In Slave Out) 11 PB7 MOSI (SPI Master Out Slave In) 12 PB8 I2C1_SCL (I2C Clock) 13 PB9 I2C1_SDA (I2C Data) 14 PC13 OSC_IN (External Oscillator Input) 15 PC14 OSC_OUT (External Oscillator Output) 16 PC15 HSE (High-Speed External) 17 PD0 UART1_RX (UART1 Receive) 18 PD1 UART1_TX (UART1 Transmit) 19 PA0 ADC1_IN0 (Analog-to-Digital Converter Input) 20 PA1 ADC1_IN1 (Analog-to-Digital Converter Input) 21 PA2 ADC1_IN2 (Analog-to-Digital Converter Input) 22 PA3 ADC1_IN3 (Analog-to-Digital Converter Input) 23 PA4 ADC1_IN4 (Analog-to-Digital Converter Input) 24 PA5 ADC1_IN5 (Analog-to-Digital Converter Input) 25 PA6 ADC1_IN6 (Analog-to-Digital Converter Input) 26 PA7 ADC1_IN7 (Analog-to-Digital Converter Input) 27 PB0 ADC2_IN8 (Analog-to-Digital Converter Input) 28 PB1 ADC2_IN9 (Analog-to-Digital Converter Input) 29 PB10 UART2_TX (UART2 Transmit) 30 PB11 UART2_RX (UART2 Receive) 31 PB12 SPI1_MISO (SPI1 Master In Slave Out) 32 PB13 SPI1_MOSI (SPI1 Master Out Slave In) 33 PB14 SPI1_SCK (SPI1 Clock) 34 PB15 SPI1_NSS (SPI1 Chip Select) 35 PC0 CAN1_RX (CAN Bus Receive) 36 PC1 CAN1_TX (CAN Bus Transmit) 37 PC2 TIM3_CH1 (Timer 3 Channel 1) 38 PC3 TIM3_CH2 (Timer 3 Channel 2) 39 PC4 TIM3_CH3 (Timer 3 Channel 3) 40 PC5 TIM3_CH4 (Timer 3 Channel 4) 41 PD2 TIM4_CH1 (Timer 4 Channel 1) 42 PD3 TIM4_CH2 (Timer 4 Channel 2) 43 PD4 TIM4_CH3 (Timer 4 Channel 3) 44 PD5 TIM4_CH4 (Timer 4 Channel 4) 45 PD6 TIM5_CH1 (Timer 5 Channel 1) 46 PD7 TIM5_CH2 (Timer 5 Channel 2) 47 VDD Power Supply (3.3V) 48 VSS Ground

This detailed table outlines the pin assignments, and you can see that this microcontroller provides a combination of digital and analog I/O functionalities, supporting protocols like SPI, I2C, UART, and ADCs.

FAQs for STM32F302CBT6

Q1: What is the main function of the NRST pin on the STM32F302CBT6? A1: The NRST pin is used for an external reset. When it is pulled low, the device resets.

Q2: What is the function of PA13 on the STM32F302CBT6? A2: PA13 serves as the SWDIO pin for the Serial Wire Debug interface , which is used for debugging and programming.

Q3: Can I use PA14 for JTAG programming on STM32F302CBT6? A3: No, PA14 is used for the SWCLK pin in Serial Wire Debug, not for JTAG programming.

Q4: What are the primary uses of PB0 and PB1? A4: PB0 and PB1 are analog inputs for ADC2 channels 8 and 9, respectively.

Q5: Does the STM32F302CBT6 support CAN communication? A5: Yes, pins PC0 and PC1 are used for CAN1RX (Receive) and CAN1TX (Transmit).

Q6: What is the function of the PA0 to PA7 pins? A6: These pins serve as analog inputs for the ADC channels 0 through 7.

Q7: What is the maximum clock speed of the STM32F302CBT6? A7: The STM32F302CBT6 can operate up to 72 MHz using the internal PLL.

Q8: Can I use the STM32F302CBT6 for PWM output? A8: Yes, the device supports PWM output via its various timers (e.g., TIM3, TIM4, TIM5).

Q9: Does STM32F302CBT6 have an I2C interface? A9: Yes, pins PB8 and PB9 are used for I2C1SCL and I2C1SDA, respectively.

Q10: What is the power supply voltage for the STM32F302CBT6? A10: The STM32F302CBT6 operates at a supply voltage of 3.3V.

Q11: What is the role of PC13 to PC15 on STM32F302CBT6? A11: These pins are associated with the external oscillator functions (OSCIN, OSCOUT, and HSE).

Q12: How many ADC channels are available on STM32F302CBT6? A12: STM32F302CBT6 offers 10 analog input channels for ADC.

Q13: Can the STM32F302CBT6 be used for SPI communication? A13: Yes, the pins PB5, PB6, PB7, PB8, PB9, PB10, and PB11 are used for SPI communication.

Q14: Does the STM32F302CBT6 support UART? A14: Yes, the device supports UART via pins PD0, PD1, PB10, and PB11 for UART1 and UART2.

Q15: What is the function of PC2 to PC5 pins? A15: These pins are connected to Timer 3 channels for PWM output.

Q16: How do I reset the STM32F302CBT6? A16: You can reset it by applying a low level to the NRST pin or via software reset.

Q17: What are the I/O voltage levels supported by STM32F302CBT6? A17: It supports a voltage range of 2.0V to 3.6V for I/O pins.

Q18: How can I configure the STM32F302CBT6 for analog functionality? A18: You can configure the pins PA0 to PA7 and PB0, PB1, and others to function as analog inputs for ADCs.

Q19: Does the STM32F302CBT6 have a watchdog timer? A19: Yes, the device includes an independent watchdog (IWDG) and a window watchdog (WWDG).

Q20: Can I use the STM32F302CBT6 for motor control applications? A20: Yes, the microcontroller provides dedicated timers and PWM outputs suitable for motor control applications.

This summary gives you a comprehensive look at the STM32F302CBT6 microcontroller’s pin functionality and answers to the most common user questions.