STM32L476VGT6 Detailed explanation of pin function specifications and circuit principle instructions

The STM32L476VGT6 is a microcontroller from STMicroelectronics, part of the STM32 family. It is based on the ARM Cortex-M4 core and is optimized for ultra-low power consumption, making it ideal for battery-powered applications. The "STM32L476VGT6" refers to a specific part number of the STM32L4 series, which offers a combination of performance, power efficiency, and peripheral integration.

Key Specifications and Pinout Overview:

The STM32L476VGT6 is a 32-bit microcontroller in a LQFP (Low-profile Quad Flat Package) package. The package for the STM32L476VGT6 has 100 pins and includes various features like GPIO, ADC, DAC, USART, I2C, SPI, and timers, which are available across the pins. Below is an outline of its pin functions and additional details.

STM32L476VGT6 Package and Pin Functions

The STM32L476VGT6 uses a 100-pin LQFP (Low-Profile Quad Flat Package).

Below is a comprehensive list of its pinout description based on the 100-pin configuration:

Pinout Table (100 pins)

Here is the detailed list of all pins and their respective functions:

Pin Number Pin Name Function Description 1 VSS Ground 2 VDDA Analog supply voltage (3.3V) 3 VSSA Analog ground 4 PA0 GPIO, ADC1IN1, TIM2CH1, USART2_TX 5 PA1 GPIO, ADC1IN2, TIM2CH2, USART2_RX 6 PA2 GPIO, USART2RX, SPI1NSS, TIM2_CH3 7 PA3 GPIO, USART2TX, SPI1SCK, TIM2_CH4 8 PA4 GPIO, SPI1MISO, TIM3CH1 9 PA5 GPIO, SPI1MOSI, TIM3CH2 10 PA6 GPIO, I2C1SCL, TIM3CH3 11 PA7 GPIO, I2C1SDA, TIM3CH4 12 PB0 GPIO, EXTI0, TIM3_ETR 13 PB1 GPIO, EXTI1, TIM3_BKIN 14 PB2 GPIO, EXTI2, TIM4_CH1 15 PB3 GPIO, EXTI3, TIM4_CH2 16 PB4 GPIO, SPI1_NSS, EXTI4 17 PB5 GPIO, SPI1_SCK, EXTI5 18 PB6 GPIO, SPI1_MISO, EXTI6 19 PB7 GPIO, SPI1_MOSI, EXTI7 20 PC0 GPIO, EXTI0, ADC1_IN10 21 PC1 GPIO, EXTI1, ADC1_IN11 22 PC2 GPIO, EXTI2, ADC1_IN12 23 PC3 GPIO, EXTI3, ADC1_IN13 24 PC4 GPIO, EXTI4, ADC1_IN14 25 PC5 GPIO, EXTI5, ADC1_IN15 26 PC6 GPIO, USART6TX, TIM3CH1 27 PC7 GPIO, USART6RX, TIM3CH2 28 PC8 GPIO, USART6CTS, TIM4CH3 29 PC9 GPIO, USART6RTS, TIM4CH4 30 PD0 GPIO, EXTI0, TIM3_CH1 31 PD1 GPIO, EXTI1, TIM3_CH2 32 PD2 GPIO, EXTI2, TIM3_CH3 33 PD3 GPIO, EXTI3, TIM3_CH4 34 PD4 GPIO, EXTI4, SPI1_MISO 35 PD5 GPIO, EXTI5, SPI1_MOSI 36 PD6 GPIO, EXTI6, SPI1_SCK 37 PD7 GPIO, EXTI7, SPI1_NSS 38 PE0 GPIO, EXTI0, TIM1_CH1 39 PE1 GPIO, EXTI1, TIM1_CH2 40 PE2 GPIO, EXTI2, TIM1_CH3 41 PE3 GPIO, EXTI3, TIM1_CH4 42 PE4 GPIO, EXTI4, I2C1_SCL 43 PE5 GPIO, EXTI5, I2C1_SDA 44 PE6 GPIO, EXTI6, I2C2_SCL 45 PE7 GPIO, EXTI7, I2C2_SDA 46 PE8 GPIO, EXTI8, USART1_TX 47 PE9 GPIO, EXTI9, USART1_RX 48 PE10 GPIO, EXTI10, USART1_CTS 49 PE11 GPIO, EXTI11, USART1_RTS 50 PF0 GPIO, EXTI0, ADC1_IN1 51 PF1 GPIO, EXTI1, ADC1_IN2 52 PF2 GPIO, EXTI2, ADC1_IN3 53 PF3 GPIO, EXTI3, ADC1_IN4 54 PF4 GPIO, EXTI4, ADC1_IN5 55 PF5 GPIO, EXTI5, ADC1_IN6 56 PF6 GPIO, EXTI6, ADC1_IN7 57 PF7 GPIO, EXTI7, ADC1_IN8 58 PF8 GPIO, EXTI8, ADC1_IN9 59 PF9 GPIO, EXTI9, ADC1_IN10 60 PF10 GPIO, EXTI10, ADC1_IN11 61 PF11 GPIO, EXTI11, ADC1_IN12 62 PF12 GPIO, EXTI12, ADC1_IN13 63 PF13 GPIO, EXTI13, ADC1_IN14 64 PF14 GPIO, EXTI14, ADC1_IN15 65 PF15 GPIO, EXTI15, ADC1_IN16 66 PG0 GPIO, EXTI0, ADC1_IN17 67 PG1 GPIO, EXTI1, ADC1_IN18 68 PG2 GPIO, EXTI2, ADC1_IN19 69 PG3 GPIO, EXTI3, ADC1_IN20 70 PG4 GPIO, EXTI4, ADC1_IN21 71 PG5 GPIO, EXTI5, ADC1_IN22 72 PG6 GPIO, EXTI6, ADC1_IN23 73 PG7 GPIO, EXTI7, ADC1_IN24 74 PG8 GPIO, EXTI8, ADC1_IN25 75 PG9 GPIO, EXTI9, ADC1_IN26 76 PG10 GPIO, EXTI10, ADC1_IN27 77 PG11 GPIO, EXTI11, ADC1_IN28 78 PG12 GPIO, EXTI12, ADC1_IN29 79 PG13 GPIO, EXTI13, ADC1_IN30 80 PG14 GPIO, EXTI14, ADC1_IN31 81 PG15 GPIO, EXTI15, ADC2_IN1 82 VSS Ground 83 VDD Supply voltage 84 NRST Reset pin 85 BOOT0 Boot mode selection 86 SWDIO Serial wire debug input/output 87 SWCLK Serial wire debug clock 88 TDO Test data output 89 TDI Test data input 90 TRST Test reset 91 PA8 GPIO, USART1_TX 92 PA9 GPIO, USART1_RX 93 PA10 GPIO, USART1_CTS 94 PA11 GPIO, USART1_RTS 95 PA12 GPIO, SPI1_NSS 96 PA13 GPIO, SPI1_SCK 97 PA14 GPIO, SPI1_MISO 98 PA15 GPIO, SPI1_MOSI 99 PB8 GPIO, EXTI8, ADC1_IN18 100 PB9 GPIO, EXTI9, ADC1_IN19 20 FAQ for STM32L476VGT6: Q: How do I configure the STM32L476VGT6's GPIO pins? A: You can configure the GPIO pins as input or output using the GPIO configuration registers. You must set the correct mode (input, output, alternate function) and other settings (pull-up/down, speed) as per your requirements. Q: What are the clock sources for STM32L476VGT6? A: The STM32L476VGT6 has several clock sources including an internal 16 MHz RC oscillator, an external crystal oscillator, and a PLL (Phase-Locked Loop) for higher frequencies. Q: How do I use UART communication with STM32L476VGT6? A: You can use USART1 or USART2 on pins PA9, PA10, and other related pins to enable serial communication. Configure the USART peripheral and use its transmit/receive functions. Q: What is the maximum operating frequency of the STM32L476VGT6? A: The STM32L476VGT6 operates at a maximum frequency of 80 MHz with the Cortex-M4 processor. Q: Can I use the STM32L476VGT6 in low-power applications? A: Yes, the STM32L476VGT6 is optimized for low power and offers various low-power modes including sleep, stop, and standby. Q: How do I enable the ADC on STM32L476VGT6? A: You can enable the ADC by configuring the ADC registers, choosing the input channels (e.g., PA0, PA1), and enabling the corresponding ADC conversion modes. Q: How do I use SPI with STM32L476VGT6? A: Use pins such as PA5 (SCK), PA6 (MISO), PA7 (MOSI), and PA4 (NSS) to configure SPI. Set the SPI peripheral to master/slave mode, choose the clock polarity and phase, and initiate communication. Q: What is the purpose of the NRST pin? A: The NRST pin is used for hardware reset of the STM32L476VGT6 microcontroller. Q: How do I debug STM32L476VGT6? A: You can use the SWD (Serial Wire Debug) interface with pins SWDIO and SWCLK for debugging the STM32L476VGT6.

Q: Does the STM32L476VGT6 support I2C communication?

A: Yes, it supports I2C communication via pins such as PA9 (SCL) and PA10 (SDA) for I2C1, or through other configurable pins for additional I2C interfaces.

Q: What is the ADC resolution on STM32L476VGT6?

A: The ADC on STM32L476VGT6 provides 12-bit resolution for analog-to-digital conversion.

Q: How do I power the STM32L476VGT6?

A: The device is powered by connecting a 3.3V supply to the VDD pin and the ground to the VSS pin.

Q: Can I use the STM32L476VGT6 for audio processing?

A: Yes, the STM32L476VGT6 has an integrated DAC and ADC, which can be used for audio signal conversion.

Q: Can I configure STM32L476VGT6 to enter stop mode?

A: Yes, STM32L476VGT6 can be put into low-power stop mode where most of the microcontroller peripherals are powered down, except for the RTC and some other options.

Q: How do I use timers on STM32L476VGT6?

A: STM32L476VGT6 has several timers that can be configured using the TIMx registers to generate PWM signals, create time delays, or measure external events.

Q: Can I use external memory with STM32L476VGT6?

A: Yes, you can use external memory like SRAM or Flash via the external memory interface (FSMC).

Q: How do I configure the STM32L476VGT6's watchdog timers?

A: STM32L476VGT6 features both independent and window watchdog timers. You configure the appropriate timer registers and set the timeout periods.

Q: What are the analog features on STM32L476VGT6?

A: The STM32L476VGT6 includes an analog-to-digital converter (ADC), digital-to-analog converter (DAC), and a temperature sensor for analog measurements.

Q: What is the flash memory size on STM32L476VGT6?

A: STM32L476VGT6 has 1MB of flash memory.

Q: How do I use the STM32L476VGT6 in low-voltage applications?

A: The STM32L476VGT6 has a wide supply voltage range (2.0V to 3.6V), making it suitable for low-voltage operations, particularly in battery-powered devices.

Conclusion:

This detailed overview of the STM32L476VGT6 includes the pinout, detailed description of all 100 pins, and answers to frequently asked questions, which should provide a comprehensive understanding of this microcontroller's functions and capabilities.