The STM32L031G6U6 is a microcontroller from STMicroelectronics. It belongs to the STM32L0 series, which is based on ARM Cortex-M0+ core and is specifically designed for ultra-low- Power applications. Below is a detailed description of the pinout specifications, the corresponding packaging, and the functionality of all the pins for this model. The pin count and function are fully described with a FAQ section based on common user inquiries.
Pin Function and Packaging Information for STM32L031G6U6
Package Type: The STM32L031G6U6 comes in LQFP-32 (Low-profile Quad Flat Package) with 32 pins.
Pinout (Function and Description): Here is the detailed list of all 32 pins with their corresponding functions:
Pin Number Pin Name Function Description 1 VDD Power supply pin (3.3V) 2 VSS Ground pin 3 NC No connection (reserved for future use) 4 PA0 GPIO, Analog pin (ADC, USART RX) 5 PA1 GPIO, Analog pin (ADC, USART TX) 6 PA2 GPIO, Alternate Function (USART TX) 7 PA3 GPIO, Alternate Function (USART RX) 8 PA4 GPIO, Analog pin (ADC, I2C) 9 PA5 GPIO, Analog pin (ADC) 10 PA6 GPIO, Alternate Function (I2C SCL) 11 PA7 GPIO, Alternate Function (I2C SDA) 12 PB0 GPIO, PWM, Timer Output 13 PB1 GPIO, PWM, Timer Output 14 PB2 GPIO, SPI, Timer Output 15 PB3 GPIO, SPI, Timer Output 16 PB4 GPIO, SPI, Timer Output 17 PB5 GPIO, SPI, PWM, Timer Output 18 PB6 GPIO, SPI, USART RX 19 PB7 GPIO, SPI, USART TX 20 PC13 GPIO, User Button 21 PC14 GPIO, Analog Pin 22 PC15 GPIO, Analog Pin 23 VDDIO2 Power Supply for I/O Pins 24 VDDA Analog Power Supply 25 VSSA Ground for Analog Part (analog ground) 26 NRST Reset Pin 27 BOOT0 Boot Pin for selecting Boot Mode 28 I/O Pin for Alternate Functions depending on configuration (e.g., I2C, SPI, etc.) 29 I/O Pin for Alternate Functions depending on configuration (e.g., I2C, SPI, etc.) 30 I/O Pin for Alternate Functions depending on configuration (e.g., I2C, SPI, etc.) 31 I/O Pin for Alternate Functions depending on configuration (e.g., I2C, SPI, etc.) 32 I/O Pin for Alternate Functions depending on configuration (e.g., I2C, SPI, etc.)FAQ (Frequently Asked Questions)
Q1: What is the power supply voltage for the STM32L031G6U6?
A1: The STM32L031G6U6 operates with a voltage supply of 2.1V to 3.6V for the core voltage (VDD) and 1.8V to 3.6V for the I/O voltage (VDDIO2).
Q2: How many GPIO pins are available in STM32L031G6U6?
A2: STM32L031G6U6 has a total of 32 pins, with several configurable as GPIO pins (General Purpose Input/Output).
Q3: Can I use the STM32L031G6U6 for analog signal processing?
A3: Yes, STM32L031G6U6 features several analog pins (PA0, PA1, PA4, PA5, PA6, PA7, PC14, PC15) which can be used for ADC inputs and other analog functions.
Q4: What is the maximum clock frequency for STM32L031G6U6?
A4: The STM32L031G6U6 can operate up to a maximum clock frequency of 32 MHz using its internal oscillator.
Q5: How can I interface STM32L031G6U6 with an external I2C device?
A5: The STM32L031G6U6 provides I2C functionality on pins PA6 (SCL) and PA7 (SDA) for communication with I2C devices.
Q6: What are the communication interfaces available on STM32L031G6U6?
A6: STM32L031G6U6 supports multiple communication interfaces, including USART, SPI, I2C, and PWM.
Q7: Does STM32L031G6U6 support USB communication?
A7: No, the STM32L031G6U6 does not have built-in USB support.
Q8: How can I configure the STM32L031G6U6 to enter low-power modes?
A8: STM32L031G6U6 offers various low-power modes, including Sleep, Stop, and Standby modes, which can be configured using the power management peripherals.
Q9: What is the function of the NRST pin?
A9: The NRST pin is the reset pin used to reset the microcontroller. When held low, it triggers a reset and reinitializes the chip.
Q10: Can STM32L031G6U6 be used for motor control?
A10: Yes, STM32L031G6U6 can be used for motor control applications with its PWM capabilities on certain pins (e.g., PB0, PB1, PB2, etc.).
Q11: How can I debug my application on STM32L031G6U6?
A11: STM32L031G6U6 supports in-circuit debugging through the SWD (Serial Wire Debug) interface.
Q12: What is the maximum operating temperature for STM32L031G6U6?
A12: The STM32L031G6U6 operates within a temperature range of -40°C to +85°C.
Q13: Can STM32L031G6U6 work with external Memory ?
A13: STM32L031G6U6 has a built-in Flash memory (64 KB) and SRAM (8 KB), but it does not support external memory interfaces such as SPI Flash or external RAM.
Q14: Does STM32L031G6U6 support DMA (Direct Memory Access )?
A14: Yes, STM32L031G6U6 supports DMA for efficient data transfer between peripherals and memory.
Q15: How many timers are available on STM32L031G6U6?
A15: STM32L031G6U6 includes 3 general-purpose timers and one low-power timer.
Q16: Can STM32L031G6U6 support UART communication?
A16: Yes, STM32L031G6U6 supports UART/USART communication through pins PA2 (TX) and PA3 (RX).
Q17: What is the function of the BOOT0 pin?
A17: The BOOT0 pin is used to select the boot mode for the STM32L031G6U6. It can choose between booting from Flash memory or system memory.
Q18: What kind of ADC resolution does STM32L031G6U6 support?
A18: STM32L031G6U6 supports a 12-bit ADC resolution for analog-to-digital conversion.
Q19: How can I use the STM32L031G6U6 in a battery-powered application?
A19: STM32L031G6U6 is ideal for battery-powered applications due to its low power consumption, which is enhanced by low-power modes and the ultra-low-power features of the STM32L0 series.
Q20: Can I use STM32L031G6U6 with an external oscillator?
A20: Yes, STM32L031G6U6 can use an external crystal or oscillator to drive the system clock for more precise timing requirements.
This detailed pinout and FAQ section should cover most of the questions and functionality needed for effective use of the STM32L031G6U6 microcontroller in your design projects.
