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STM32L072CBT6 Detailed explanation of pin function specifications and circuit principle instructions

The "STM32L072CBT6" is part of the STM32 family, specifically under the STM32L0 series. STM32 is a family of microcontrollers from STMicroelectronics, known for their low Power consumption and high performance in embedded applications.

The "STM32L072CBT6" corresponds to the following key features:

Package Type: LQFP-64 (64-pin Low-profile Quad Flat Package) Core: ARM Cortex-M0+ Flash: 192 KB RAM: 20 KB Operating Voltage Range: 1.65V to 3.6V

Pin Function List for STM32L072CBT6 (LQFP-64)

Here's a detailed list of all 64 pins, their corresponding functions, and their usage:

Pin Number Pin Name Function Description 1 VDD Power Supply (2.0V to 3.6V) 2 VSS Ground 3 NRST Reset Pin (Active low) 4 PA0 GPIO (General Purpose I/O), ADC1_IN0 5 PA1 GPIO, ADC1IN1, TIM2CH2 6 PA2 GPIO, ADC1IN2, USART2TX 7 PA3 GPIO, ADC1IN3, USART2RX 8 PA4 GPIO, SPI1_NSS 9 PA5 GPIO, SPI1_SCK 10 PA6 GPIO, SPI1_MISO 11 PA7 GPIO, SPI1_MOSI 12 PA8 GPIO, MCO1 (Microcontroller Output Clock ) 13 PA9 GPIO, USART1_TX 14 PA10 GPIO, USART1_RX 15 PA11 GPIO, CAN1_RX 16 PA12 GPIO, CAN1_TX 17 PA13 GPIO, SWDIO (Serial Wire Debug Data Input/Output) 18 PA14 GPIO, SWCLK (Serial Wire Clock) 19 PA15 GPIO, SCK1 (SPI1 Clock) 20 PB0 GPIO, SPI2_NSS 21 PB1 GPIO, SPI2_SCK 22 PB2 GPIO, SPI2_MISO 23 PB3 GPIO, SPI2_MOSI 24 PB4 GPIO, I2C1_SDA 25 PB5 GPIO, I2C1_SCL 26 PB6 GPIO, UART4_TX 27 PB7 GPIO, UART4_RX 28 PB8 GPIO, I2C1_SCL 29 PB9 GPIO, I2C1_SDA 30 PB10 GPIO, SPI1_NSS 31 PB11 GPIO, SPI1_SCK 32 PB12 GPIO, SPI1_MISO 33 PB13 GPIO, SPI1_MOSI 34 PC13 GPIO, TAMPER 35 PC14 GPIO, OSC32_IN (32.768 kHz Crystal Input) 36 PC15 GPIO, OSC32_OUT (32.768 kHz Crystal Output) 37 PD0 GPIO, EXTI0 (External Interrupt 0) 38 PD1 GPIO, EXTI1 (External Interrupt 1) 39 PD2 GPIO, EXTI2 (External Interrupt 2) 40 PD3 GPIO, EXTI3 (External Interrupt 3) 41 PD4 GPIO, EXTI4 (External Interrupt 4) 42 PD5 GPIO, EXTI5 (External Interrupt 5) 43 PD6 GPIO, EXTI6 (External Interrupt 6) 44 PD7 GPIO, EXTI7 (External Interrupt 7) 45 PD8 GPIO, EXTI8 (External Interrupt 8) 46 PD9 GPIO, EXTI9 (External Interrupt 9) 47 PD10 GPIO, EXTI10 (External Interrupt 10) 48 PD11 GPIO, EXTI11 (External Interrupt 11) 49 PD12 GPIO, EXTI12 (External Interrupt 12) 50 PD13 GPIO, EXTI13 (External Interrupt 13) 51 PD14 GPIO, EXTI14 (External Interrupt 14) 52 PD15 GPIO, EXTI15 (External Interrupt 15) 53 VCAP1 Internal Voltage Reference capacitor 54 VCAP2 Internal Voltage Reference Capacitor 55 VSS Ground 56 VDD Power Supply (2.0V to 3.6V) 57 NRST Reset Pin (Active low) 58 PA0 GPIO, ADC1_IN0 59 PA1 GPIO, ADC1_IN1 60 PA2 GPIO, ADC1_IN2 61 PA3 GPIO, ADC1_IN3 62 PA4 GPIO, SPI1_NSS 63 PA5 GPIO, SPI1_SCK 64 PA6 GPIO, SPI1_MISO

FAQs (Frequently Asked Questions)

1. What is the operating voltage range of STM32L072CBT6?

The STM32L072CBT6 operates within the voltage range of 1.65V to 3.6V.

2. How many pins does the STM32L072CBT6 have?

The STM32L072CBT6 comes with a 64-pin LQFP package.

3. Does STM32L072CBT6 support SPI communication?

Yes, the STM32L072CBT6 supports SPI communication through pins like PA5, PA6, PA7 for SPI1, and PB5, PB4, PB3 for SPI2.

4. What is the clock source for the STM32L072CBT6?

The STM32L072CBT6 can use an external oscillator (crystals or resonators) through pins like PA8 or PC14.

5. How do I use the USART in STM32L072CBT6?

USART1 is supported through pins PA9 (TX) and PA10 (RX). USART2 is Access ible via PA2 (TX) and PA3 (RX).

6. Does the STM32L072CBT6 support I2C?

Yes, I2C functionality is available on pins PB6, PB7 for I2C1SDA and I2C1SCL.

7. How many GPIO pins are available on the STM32L072CBT6?

The STM32L072CBT6 provides several GPIO pins distributed across ports PA, PB, PC, and PD, totaling up to 64 pins.

8. What is the maximum operating frequency of STM32L072CBT6?

The STM32L072CBT6 can operate at a maximum clock frequency of 32 MHz.

9. Does STM32L072CBT6 support analog-to-digital conversion?

Yes, STM32L072CBT6 has a 12-bit ADC with multiple channels, including PA0-PA3 for input.

10. What is the maximum current output from the STM32L072CBT6 pins?

The maximum current per GPIO pin is typically 20 mA for standard outputs.

11. Can I use STM32L072CBT6 for low power applications?

Yes, the STM32L072CBT6 is designed for low-power applications with various low-power modes like Sleep and Stop modes.

12. What is the reset behavior of STM32L072CBT6?

The device can be reset by pulling the NRST pin low. It also features a built-in power-on reset.

13. Does STM32L072CBT6 support CAN?

Yes, STM32L072CBT6 supports CAN through pins PA11 (CANRX) and PA12 (CANTX).

14. What is the function of VCAP pins?

The VCAP1 and VCAP2 pins are used to connect capacitors for internal voltage regulation.

15. Can STM32L072CBT6 communicate via USB?

STM32L072CBT6 does not support direct USB connectivity but supports communication through USART and other serial interface s.

16. How do I connect external interrupt pins?

External interrupt lines (EXTI) can be connected to various pins like PA0, PA1, PB0, and others for handling interrupts.

17. Is there a watchdog timer in STM32L072CBT6?

Yes, STM32L072CBT6 includes an independent watchdog timer to handle system resets in case of failure.

18. What kind of packages are available for STM32L072CBT6?

The STM32L072CBT6 comes in an LQFP-64 package, ideal for medium-sized embedded systems.

19. Can I program STM32L072CBT6 via SWD?

Yes, STM32L072CBT6 supports programming and debugging via the Serial Wire Debug (SWD) interface on pins PA13 (SWDIO) and PA14 (SWCLK).

20. Does STM32L072CBT6 support DMA?

Yes, STM32L072CBT6 supports Direct Memory Access (DMA) to optimize data transfers without CPU intervention.