STM32F072CBT6 Detailed explanation of pin function specifications and circuit principle instructions

The STM32F072CBT6 is a microcontroller from the STM32 series by STMicroelectronics. It is a part of the STM32F0 family, which offers a range of 32-bit ARM Cortex-M0 based microcontrollers for various applications requiring low Power consumption and high performance.

Here’s a detailed breakdown for the STM32F072CBT6, covering pin function specifications, circuit principles, pinout details, and a FAQ section with common questions. The STM32F072CBT6 microcontroller has a LQFP-48 package (48 pins in total).

Pinout and Pin Function Specifications for STM32F072CBT6

Below is a table describing the function of each pin on the STM32F072CBT6, based on the 48-pin LQFP package:

Pin No. Pin Name Pin Function Description 1 VSS Ground Pin (GND) 2 VDD Power Supply Pin (3.3V) 3 NRST Reset Pin 4 PA13 SWDIO (Serial Wire Debug I/O) 5 PA14 SWCLK (Serial Wire Clock ) 6 PA15 JTDI (JTAG Test Data Input) 7 PB3 JTDO (JTAG Test Data Output) 8 PB4 JTRST (JTAG Test Reset) 9 PA0 ADC Channel 0 / GPIO (General Purpose I/O) 10 PA1 ADC Channel 1 / GPIO 11 PA2 ADC Channel 2 / GPIO 12 PA3 ADC Channel 3 / GPIO 13 PA4 GPIO 14 PA5 GPIO / TIM2 Channel 1 (Timer) 15 PA6 GPIO / TIM3 Channel 1 (Timer) 16 PA7 GPIO / TIM3 Channel 2 (Timer) 17 PB0 GPIO / SPI1 MISO (Master In Slave Out) 18 PB1 GPIO / SPI1 MOSI (Master Out Slave In) 19 PB2 GPIO / SPI1 SCK (Clock) 20 PB5 GPIO / I2C1 SCL (Clock) 21 PB6 GPIO / I2C1 SDA (Data) 22 PB7 GPIO / I2C1 SDA (Alternate) 23 PA8 MCO (Microcontroller Clock Output) 24 PA9 USART1 TX (Transmit) 25 PA10 USART1 RX (Receive) 26 PA11 USB OTG FS ID (Identification) 27 PA12 USB OTG FS DM (Data Minus) 28 PA13 USB OTG FS DP (Data Plus) 29 PB8 GPIO / TIM1 Channel 1 (Timer) 30 PB9 GPIO / TIM1 Channel 2 (Timer) 31 PB10 GPIO / TIM1 Channel 3 (Timer) 32 PB11 GPIO / TIM1 Channel 4 (Timer) 33 PB12 GPIO / SPI1 SCK (Alternate Function) 34 PB13 GPIO / SPI1 MISO (Alternate Function) 35 PB14 GPIO / SPI1 MOSI (Alternate Function) 36 PB15 GPIO / SPI1 NSS (Chip Select) 37 PA4 GPIO / TIM1 Channel 1N (Timer) 38 PA5 GPIO / TIM1 Channel 2N (Timer) 39 PA6 GPIO / TIM1 Channel 3N (Timer) 40 PA7 GPIO / TIM1 Channel 4N (Timer) 41 PA8 GPIO 42 PA9 GPIO 43 PA10 GPIO 44 PA11 GPIO 45 PA12 GPIO 46 PA13 GPIO 47 PA14 GPIO 48 PA15 GPIO

Circuit Principle Overview

The STM32F072CBT6 operates on a 3.3V power supply and has multiple I/O features like GPIO, ADCs, timers, and Communication interface s such as SPI, I2C, USART, and USB OTG. The core is based on the ARM Cortex-M0, a 32-bit processor, and it includes multiple peripherals for connectivity, analog interfacing, and control.

Power Supply: VDD (3.3V) provides power to the device. VSS is the ground connection. Reset: NRST is the reset pin which can be used to reset the microcontroller to its initial state. Debugging: The PA13 (SWDIO) and PA14 (SWCLK) are used for debugging with the Serial Wire Debug (SWD) interface. Communication: The microcontroller includes communication peripherals like USART1 (PA9/PA10), SPI1 (PB3-PB15), and I2C1 (PB6-PB7). USB OTG FS is available with pins PA11-PA14.

Pin Function FAQ for STM32F072CBT6

Q: What is the default voltage supply for STM32F072CBT6? A: The default voltage supply is 3.3V.

Q: What is the purpose of the NRST pin? A: The NRST pin is used to reset the microcontroller.

Q: How many GPIO pins does STM32F072CBT6 have? A: STM32F072CBT6 has 48 pins, many of which are configurable as GPIOs.

Q: What communication interfaces are supported? A: The STM32F072CBT6 supports SPI, I2C, USART, and USB OTG FS.

Q: What is the function of PA9 and PA10? A: PA9 and PA10 are used for USART1 TX (Transmit) and USART1 RX (Receive) respectively.

Q: Does STM32F072CBT6 support USB OTG? A: Yes, STM32F072CBT6 supports USB OTG Full-Speed with pins PA11, PA12, PA13, and PA14.

Q: What is the function of the PA15 pin? A: PA15 is a general-purpose I/O pin but can be used for JTAG functionality.

Q: What are the pin functions for PB0 to PB15? A: PB0 to PB15 include various GPIOs and alternate functions like SPI, I2C, and timers.

Q: Can I use PA0-PA3 for ADC functions? A: Yes, PA0 to PA3 can be used as ADC channels 0 to 3.

Q: How does STM32F072CBT6 handle debugging? A: Debugging is supported through the SWD interface using PA13 (SWDIO) and PA14 (SWCLK).

Q: Is STM32F072CBT6 suitable for low-power applications? A: Yes, the STM32F072CBT6 is designed for low-power consumption and features various low-power modes.

Q: Can I use PA8 as a clock output? A: Yes, PA8 can output the microcontroller's clock (MCO).

Q: What are the capabilities of the timers on STM32F072CBT6? A: The STM32F072CBT6 has multiple timers with PWM, input capture, and output compare functions.

Q: How can I interface with an external display using STM32F072CBT6? A: You can use SPI or I2C for interfacing with displays.

Q: Can I use the microcontroller for motor control? A: Yes, the STM32F072CBT6 has timers with PWM outputs suitable for motor control.

Q: What is the maximum clock frequency of STM32F072CBT6? A: The maximum clock frequency is 48 MHz.

Q: How is STM32F072CBT6 programmed? A: It can be programmed via SWD or JTAG, using ST-Link or other compatible programmers.

Q: Does STM32F072CBT6 have a watchdog timer? A: Yes, it includes an independent watchdog and a window watchdog.

Q: Can STM32F072CBT6 operate without an external crystal? A: Yes, it has an internal RC oscillator.

Q: What are the common uses for STM32F072CBT6? A: It is commonly used in applications like sensors, motor control, and communication systems.

This document gives a comprehensive overview of the STM32F072CBT6 microcontroller's pins and functionality. Let me know if you need further details!