The "STM32WLE5CCU6" belongs to the STMicroelectronics brand. It is part of their STM32 series, specifically a variant in the STM32WLE5 series, which focuses on wireless communication.
The STM32WLE5CCU6 features an LQFP-48 package, which means it has 48 pins. Here's a detailed explanation of the functions of each pin, as well as some frequently asked questions (FAQs) about its use:
Pin Function Specifications
Pin Number Pin Name Function Description 1 VDD Power supply pin (3.3V) 2 VSS Ground pin 3 NRST Reset pin (active low) 4 PA13 SWDIO: Serial Wire Debug Data Input/Output 5 PA14 SWCLK: Serial Wire Debug Clock 6 PA0 GPIO (General Purpose Input/Output) / ADC1_IN0 7 PA1 GPIO / ADC1_IN1 8 PA2 GPIO / USART2_TX 9 PA3 GPIO / USART2_RX 10 PA4 GPIO / SPI1_NSS 11 PA5 GPIO / SPI1_SCK 12 PA6 GPIO / SPI1_MISO 13 PA7 GPIO / SPI1_MOSI 14 PB0 GPIO / USART3_TX 15 PB1 GPIO / USART3_RX 16 PB3 GPIO / SPI2_SCK 17 PB4 GPIO / SPI2_MISO 18 PB5 GPIO / SPI2_MOSI 19 PB6 GPIO / I2C1_SCL 20 PB7 GPIO / I2C1_SDA 21 PC13 GPIO 22 PC14 GPIO 23 PC15 GPIO 24 PD0 GPIO 25 PD1 GPIO 26 PD2 GPIO 27 PD3 GPIO 28 PD4 GPIO 29 PD5 GPIO 30 PD6 GPIO 31 PD7 GPIO 32 PD8 GPIO 33 PD9 GPIO 34 PD10 GPIO 35 PD11 GPIO 36 PD12 GPIO 37 PD13 GPIO 38 PD14 GPIO 39 PD15 GPIO 40 PE0 GPIO 41 PE1 GPIO 42 PE2 GPIO 43 PE3 GPIO 44 PE4 GPIO 45 PE5 GPIO 46 PE6 GPIO 47 PE7 GPIO 48 VCAP Voltage regulator capacitor pin (for power stability)Pinout Summary
The STM32WLE5CCU6 comes with 48 pins organized to accommodate a wide variety of peripheral interface s. These pins are used for communication (USART, SPI, I2C), general-purpose input/output (GPIO), analog functions (ADC), and other system functions (e.g., reset, debug).
FAQs
Q: What is the power supply voltage for the STM32WLE5CCU6? A: The STM32WLE5CCU6 operates at a supply voltage of 3.3V (VDD pin).
Q: How many pins does the STM32WLE5CCU6 have? A: The STM32WLE5CCU6 comes in a 48-pin LQFP package.
Q: What is the function of the NRST pin? A: The NRST pin is used to reset the microcontroller. It is active low, meaning the chip resets when the pin is pulled low.
Q: Can I use the PA13 and PA14 pins for debugging? A: Yes, PA13 is the SWDIO (Serial Wire Debug Data) pin, and PA14 is the SWCLK (Serial Wire Debug Clock) pin used for debugging.
Q: How do I configure PA0 to PA15 pins? A: These pins are multi-functional GPIO pins and can be configured for different functions like analog inputs, UART, SPI, and more depending on the application.
Q: Can I use the PB0 and PB1 pins for UART communication? A: Yes, PB0 and PB1 are used for USART3TX and USART3RX, respectively, for UART communication.
Q: Does the STM32WLE5CCU6 have SPI support? A: Yes, the STM32WLE5CCU6 supports SPI with SPI1 (pins PA4, PA5, PA6, PA7) and SPI2 (pins PB3, PB4, PB5).
Q: What are the I2C pins on the STM32WLE5CCU6? A: The I2C1 interface is available on PB6 (SCL) and PB7 (SDA) pins.
Q: Can the PA0 pin be used as an analog input? A: Yes, PA0 can be used as an ADC1_IN0 analog input.
Q: Does the STM32WLE5CCU6 have a reset function? A: Yes, the NRST pin is dedicated to resetting the microcontroller.
Q: How many GPIO pins are available on the STM32WLE5CCU6? A: There are 36 GPIO pins (PA0 to PA15, PB0 to PB5, PC13 to PC15, PD0 to PD15, and PE0 to PE7).
Q: Is there a voltage regulator on the STM32WLE5CCU6? A: Yes, the STM32WLE5CCU6 includes a VCAP pin for the voltage regulator to stabilize the internal supply voltage.
Q: Can the PDx pins be used for general GPIO? A: Yes, the PDx pins (from PD0 to PD15) are general-purpose input/output pins.
Q: Are the PA13 and PA14 pins used for any function besides debugging? A: No, PA13 and PA14 are exclusively used for debugging (SWDIO and SWCLK).
Q: How do I configure the PA pins for SPI? A: PA4 (NSS), PA5 (SCK), PA6 (MISO), and PA7 (MOSI) are used for SPI1 configuration.
Q: Is there support for external memory in STM32WLE5CCU6? A: The STM32WLE5CCU6 does not feature external memory interface support. However, it has internal flash and RAM.
Q: Can the PB6 and PB7 pins be used for other functions? A: Yes, PB6 and PB7 are primarily used for I2C1 (SCL and SDA), but can be repurposed for GPIO.
Q: How do I use the STM32WLE5CCU6 with low power modes? A: The STM32WLE5CCU6 supports various low-power modes that can be controlled through software, including sleep and stop modes.
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