STM32L031K6T6 Detailed explanation of pin function specifications and circuit principle instructions（295 ）

The model STM32L031K6T6 belongs to the STM32 family of microcontrollers, which is developed by STMicroelectronics. This specific model is part of the STM32L0 series, a low- Power microcontroller designed for ultra-low power applications.

Package and Pinout Specifications:

Package Type: LQFP-32 (Low-profile Quad Flat Package) Number of Pins: 32 pins in total Core: ARM Cortex-M0+ (32-bit) Operating Voltage: 1.65V to 3.6V Flash Memory : 64KB (typically) RAM: 8KB (typically)

Pin Function Overview:

Here is a detailed list of the pin functions for the STM32L031K6T6 microcontroller, which includes all 32 pins, and their specific functions:

Pin Number Pin Name Function Description 1 VDD Power supply pin (1.65V to 3.6V) 2 VSS Ground pin 3 PA13 SWDIO (Serial Wire Debug I/O) 4 PA14 SWCLK (Serial Wire Clock ) 5 PA15 JTDI (JTAG Data In) 6 PB3 I2C1_SCL (I2C Clock) 7 PB4 I2C1_SDA (I2C Data) 8 PB5 GPIO (General Purpose I/O) 9 PB6 SPI1_MISO (SPI Master In Slave Out) 10 PB7 SPI1_MOSI (SPI Master Out Slave In) 11 PB8 SPI1_SCK (SPI Clock) 12 PB9 SPI1_NSS (SPI Chip Select) 13 PA0 Analog Input (ADC1_IN0) 14 PA1 Analog Input (ADC1_IN1) 15 PA2 USART2_TX (USART Transmit) 16 PA3 USART2_RX (USART Receive) 17 PA4 General Purpose I/O 18 PA5 General Purpose I/O 19 PA6 USART1_TX (USART Transmit) 20 PA7 USART1_RX (USART Receive) 21 PA8 MCO (Microcontroller Clock Output) 22 PA9 USART1_TX (USART Transmit) 23 PA10 USART1_RX (USART Receive) 24 PA11 USB_DM (USB Data Minus) 25 PA12 USB_DP (USB Data Plus) 26 PB10 USART1_TX (USART Transmit) 27 PB11 USART1_RX (USART Receive) 28 PB12 SPI2_MISO (SPI Master In Slave Out) 29 PB13 SPI2_MOSI (SPI Master Out Slave In) 30 PB14 SPI2_SCK (SPI Clock) 31 PB15 SPI2_NSS (SPI Chip Select) 32 VSS Ground pin

Pin Function FAQs:

Q: What is the function of pin PA0 on STM32L031K6T6? A: Pin PA0 is an analog input pin and is connected to ADC1_IN0.

Q: How do I use the I2C interface on STM32L031K6T6? A: You can use pins PB3 (I2C1SCL) and PB4 (I2C1SDA) for the I2C clock and data line, respectively.

Q: Can I use PA9 and PA10 for UART communication on STM32L031K6T6? A: Yes, PA9 is USART1TX (Transmit) and PA10 is USART1RX (Receive), which are used for UART communication.

Q: How do I connect to the USB on STM32L031K6T6? A: You can use PA11 (USBDM) for the USB Data Minus and PA12 (USBDP) for the USB Data Plus pins.

Q: What is the maximum voltage that can be applied to the VDD pin on STM32L031K6T6? A: The maximum voltage that can be applied to the VDD pin is 3.6V.

Q: Can I use pin PA13 for debugging? A: Yes, PA13 is used for SWDIO (Serial Wire Debug I/O) for debugging purposes.

Q: What is the function of pin PA14 on STM32L031K6T6? A: Pin PA14 is used as SWCLK (Serial Wire Clock) for debugging.

Q: How can I use the SPI interface on STM32L031K6T6? A: You can use PB5 (SPI1SCK), PB6 (SPI1MISO), PB7 (SPI1MOSI), and PB8 (SPI1NSS) for the SPI interface.

Q: What is the maximum current rating for the GPIO pins? A: The maximum current rating for each GPIO pin is 20mA.

Q: Can I use PB6 and PB7 for SPI communication? A: Yes, PB6 is SPI1MISO (Master In Slave Out), and PB7 is SPI1MOSI (Master Out Slave In), which are used in SPI communication.

Q: What is the purpose of the MCO pin (PA8)? A: PA8 is used as the Microcontroller Clock Output (MCO), which can output the system clock.

Q: How can I configure PA15 as a JTAG pin? A: PA15 is used for JTDI (JTAG Data In), and it is part of the JTAG debugging interface.

Q: What is the function of pin PA2 on STM32L031K6T6? A: Pin PA2 is used as USART2_TX (USART Transmit).

Q: Can I use PA7 for USART communication? A: Yes, PA7 is used as USART1_RX (USART Receive) for communication.

Q: How do I power the STM32L031K6T6? A: Power the chip using the VDD pin, which can accept a voltage range from 1.65V to 3.6V.

Q: How do I connect external devices to the GPIO pins? A: The GPIO pins on STM32L031K6T6 can be configured as input, output, or alternate function using software.

Q: Is it possible to use the USB pins for data communication? A: Yes, PA11 (USBDM) and PA12 (USBDP) can be used for USB data communication.

Q: Can STM32L031K6T6 be used in low-power applications? A: Yes, the STM32L031K6T6 is part of the STM32L0 series, which is designed for ultra-low power consumption.

Q: Can I use the PA4 pin as a GPIO pin? A: Yes, PA4 can be configured as a general-purpose input/output (GPIO) pin.

Q: What is the function of pin PB15 on STM32L031K6T6? A: Pin PB15 is used as SPI2_NSS (SPI Chip Select) for the SPI2 interface.

This should give you a comprehensive view of the STM32L031K6T6 microcontroller's pin functions, encapsulating all the 32 pins and their detailed descriptions.