STM32G071RBT6 Detailed explanation of pin function specifications and circuit principle instructions

The STM32G071RBT6 belongs to the STM32 family of microcontrollers developed by STMicroelectronics. It is part of the STM32G0 series, which offers a balance of performance, low Power consumption, and rich peripheral sets, making it suitable for a wide range of applications, from industrial and automotive to consumer electronics.

Packaging:

Package Type: LQFP (Low-profile Quad Flat Package) Pin Count: 48 pins

Pin Function Specifications and Circuit Principle

The STM32G071RBT6 microcontroller has 48 pins, and each pin serves a specific purpose. Below is the detailed breakdown of the pin functions. These pins include general-purpose I/O pins, analog pins, power pins, communication interface pins, and more. This table includes all 48 pins and their corresponding functions.

Pin Number Pin Name Function Description 1 VSS Ground pin. 2 VDD Power supply pin (3.3V or 5V depending on configuration). 3 NRST Reset pin. Active low to reset the device. 4 PA13 SWDIO: Serial Wire Debug Input/Output. Used for debugging and programming. 5 PA14 SWCLK: Serial Wire Clock for debugging. 6 PA15 USART1_CK: USART1 Clock. 7 PB3 USART1_TX: USART1 Transmit. 8 PB4 USART1_RX: USART1 Receive. 9 PB5 SPI1_SCK: SPI1 Clock. 10 PB6 SPI1_MISO: SPI1 Master In Slave Out. 11 PB7 SPI1_MOSI: SPI1 Master Out Slave In. 12 PB8 I2C1_SCL: I2C1 Clock. 13 PB9 I2C1_SDA: I2C1 Data. 14 PC13 TAMPER: Tamper Detection. 15 PC14 LSI: Low-speed Internal Oscillator. 16 PC15 HSE: High-speed External Oscillator. 17 PD0 CAN1_RX: CAN1 Receive. 18 PD1 CAN1_TX: CAN1 Transmit. 19 PD2 I2S2_WS: I2S2 Word Select. 20 PD3 I2S2_CK: I2S2 Clock. 21 PD4 I2S2_SD: I2S2 Serial Data. 22 PE0 External interrupt/event pin. 23 PE1 External interrupt/event pin. 24 PE2 External interrupt/event pin. 25 PE3 External interrupt/event pin. 26 PE4 External interrupt/event pin. 27 PE5 External interrupt/event pin. 28 PE6 External interrupt/event pin. 29 PE7 External interrupt/event pin. 30 PE8 External interrupt/event pin. 31 PE9 External interrupt/event pin. 32 PE10 External interrupt/event pin. 33 PE11 External interrupt/event pin. 34 PE12 External interrupt/event pin. 35 PE13 External interrupt/event pin. 36 PE14 External interrupt/event pin. 37 PE15 External interrupt/event pin. 38 PF0 ADC_IN0: ADC Input channel 0. 39 PF1 ADC_IN1: ADC Input channel 1. 40 PF2 ADC_IN2: ADC Input channel 2. 41 PF3 ADC_IN3: ADC Input channel 3. 42 PF4 ADC_IN4: ADC Input channel 4. 43 PF5 ADC_IN5: ADC Input channel 5. 44 PF6 ADC_IN6: ADC Input channel 6. 45 PF7 ADC_IN7: ADC Input channel 7. 46 PF8 ADC_IN8: ADC Input channel 8. 47 PF9 ADC_IN9: ADC Input channel 9. 48 PF10 ADC_IN10: ADC Input channel 10.

FAQs

Q1: How do I use the reset pin (NRST) on the STM32G071RBT6? A1: The NRST pin is used to reset the microcontroller when driven low. It is an active-low reset pin. You can connect it to an external reset circuit or use a push-button to manually reset the device.

Q2: Can I use PA13 and PA14 for general-purpose I/O (GPIO)? A2: No, PA13 and PA14 are dedicated for debugging purposes (SWDIO and SWCLK). These pins should not be used for general-purpose I/O during debugging operations.

Q3: What is the power supply voltage for the STM32G071RBT6? A3: The STM32G071RBT6 can operate with a supply voltage ranging from 2.4V to 3.6V, typically powered by a 3.3V source.

Q4: What is the purpose of the PB8 and PB9 pins on the STM32G071RBT6? A4: PB8 is used as the I2C1SCL (Clock) and PB9 as the I2C1SDA (Data) for the I2C communication interface.

Q5: How can I use the CAN1 pins (PD0 and PD1)? A5: PD0 and PD1 are used for CAN communication, where PD0 is CAN1RX (Receive) and PD1 is CAN1TX (Transmit).

Q6: Can I use the PA15 pin for USART communication? A6: No, PA15 is used as USART1_CK for the USART1 clock. It cannot be used for general USART TX or RX operations.

Q7: What are the limitations for using the analog pins (PF0-PF9)? A7: The PF0 to PF9 pins are used as analog inputs for the ADC (Analog-to-Digital Converter). These pins should be used with caution to avoid interference from other digital functions.

Q8: Are the external interrupt/event pins (PE0-PE15) programmable? A8: Yes, the PE0 to PE15 pins are programmable and can be configured for external interrupts or event detection.

Q9: What type of debugging interface is supported by PA13 and PA14? A9: PA13 (SWDIO) and PA14 (SWCLK) are used for the Serial Wire Debug interface for programming and debugging the STM32G071RBT6.

Q10: How do I configure the SPI pins (PB5, PB6, PB7)? A10: PB5, PB6, and PB7 are used for SPI1 communication. You can configure them as SPI SCK, MISO, and MOSI respectively in your application code.

Q11: Can I configure the PA13 and PA14 pins for GPIO functions? A11: No, PA13 and PA14 are dedicated for Serial Wire Debug (SWD) operations. They cannot be used as GPIO when