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STM32L051C8T6 Detailed explanation of pin function specifications and circuit principle instructions

The STM32L051C8T6 is part of the STM32L0 series, manufactured by STMicroelectronics. This series is based on ARM Cortex-M0+ cores and is designed for ultra-low power consumption and cost-effective solutions. The STM32L051C8T6 features a 32-bit microcontroller suitable for a wide range of embedded applications.

Package Type:

The STM32L051C8T6 is available in a LQFP-48 package, meaning it has 48 pins in total. These pins are used for a variety of functions, including power supply, communication, GPIOs (general-purpose I/O), analog input, timers, and other functionalities.

Pinout and Pin Function Description:

Below is a detailed explanation of the pin functions for the STM32L051C8T6 in an LQFP-48 package. I'll provide the comprehensive pin list in a table format, as well as brief descriptions for each pin’s function.

Pin Function 1 VSS - Ground Pin 2 VDD - Supply Voltage Pin 3 VBAT - Battery Input Pin 4 PA13 (SWDIO) - Serial Wire Debug Data Input/Output Pin 5 PA14 (SWCLK) - Serial Wire Debug Clock Pin 6 PA15 (JTDI) - Joint Test Data Input Pin 7 PB3 (JTDO) - Joint Test Data Output Pin 8 PB4 (NJTRST) - Active low reset pin (JTAG) 9 PC13 (TAMPER) - Tamper detection pin 10 PC14 (OSC32_IN) - Oscillator input for 32.768 kHz crystal 11 PC15 (OSC32_OUT) - Oscillator output for 32.768 kHz crystal 12 PD0 (RX) - USART1 Receiver Pin 13 PD1 (TX) - USART1 Transmitter Pin 14 PA0 (ADC1_IN0) - Analog input channel 0 (ADC1) 15 PA1 (ADC1_IN1) - Analog input channel 1 (ADC1) 16 PA2 (ADC1_IN2) - Analog input channel 2 (ADC1) 17 PA3 (ADC1_IN3) - Analog input channel 3 (ADC1) 18 PA4 (ADC1_IN4) - Analog input channel 4 (ADC1) 19 PA5 (ADC1_IN5) - Analog input channel 5 (ADC1) 20 PA6 (ADC1_IN6) - Analog input channel 6 (ADC1) 21 PA7 (ADC1_IN7) - Analog input channel 7 (ADC1) 22 PB0 (ADC2_IN8) - Analog input channel 8 (ADC2) 23 PB1 (ADC2_IN9) - Analog input channel 9 (ADC2) 24 PB2 (ADC2_IN10) - Analog input channel 10 (ADC2) 25 PC0 (ADC2_IN11) - Analog input channel 11 (ADC2) 26 PC1 (ADC2_IN12) - Analog input channel 12 (ADC2) 27 PC2 (ADC2_IN13) - Analog input channel 13 (ADC2) 28 PC3 (ADC2_IN14) - Analog input channel 14 (ADC2) 29 PC4 (ADC2_IN15) - Analog input channel 15 (ADC2) 30 PC5 (DAC_OUT) - DAC Output Pin (Digital-to-Analog Converter) 31 PD2 (TIM3_CH1) - Timer 3 Channel 1 (PWM) 32 PD3 (TIM3_CH2) - Timer 3 Channel 2 (PWM) 33 PD4 (TIM3_CH3) - Timer 3 Channel 3 (PWM) 34 PD5 (TIM3_CH4) - Timer 3 Channel 4 (PWM) 35 PD6 (TIM4_CH1) - Timer 4 Channel 1 (PWM) 36 PD7 (TIM4_CH2) - Timer 4 Channel 2 (PWM) 37 PE0 (TIM4_CH3) - Timer 4 Channel 3 (PWM) 38 PE1 (TIM4_CH4) - Timer 4 Channel 4 (PWM) 39 PE2 (I2C1_SCL) - I2C1 Clock Line 40 PE3 (I2C1_SDA) - I2C1 Data Line 41 PE4 (SPI1_NSS) - SPI1 Chip Select 42 PE5 (SPI1_SCK) - SPI1 Clock 43 PE6 (SPI1_MISO) - SPI1 Master In Slave Out 44 PE7 (SPI1_MOSI) - SPI1 Master Out Slave In 45 PF0 (BOOT0) - Boot mode selection pin 46 PF1 (IO0) - General-purpose I/O 47 PF2 (IO1) - General-purpose I/O 48 PF3 (IO2) - General-purpose I/O

20 Common FAQs with Detailed Answers:

Q: What is the package type of STM32L051C8T6? A: The STM32L051C8T6 is available in an LQFP-48 package, meaning it has 48 pins.

Q: How many pins does STM32L051C8T6 have? A: The STM32L051C8T6 has 48 pins.

Q: What is the purpose of the VDD pin on STM32L051C8T6? A: The VDD pin is used to provide the supply voltage to the microcontroller.

Q: What does the PA13 pin do? A: The PA13 pin serves as the Serial Wire Debug Data Input/Output (SWDIO).

Q: What is the function of PA0 on STM32L051C8T6? A: The PA0 pin is used as the Analog input channel 0 (ADC1).

Q: How do I connect the external oscillator to STM32L051C8T6? A: You can connect the external 32.768 kHz oscillator to pins PC14 (OSC32IN) and PC15 (OSC32OUT).

Q: Can I use PA1 for ADC input? A: Yes, PA1 is connected to Analog input channel 1 (ADC1).

Q: What is the maximum voltage allowed on the VDD pin? A: The VDD pin typically operates between 2.0V and 3.6V.

Q: Does STM32L051C8T6 support I2C? A: Yes, STM32L051C8T6 has I2C1 functionality on pins PE2 (I2C1SCL) and PE3 (I2C1SDA).

Q: How do I configure a USART communication? A: USART1 communication can be configured using pins PD0 (RX) and PD1 (TX).

Q: What does the PF0 pin do on the STM32L051C8T6? A: PF0 is used for the Boot mode selection, determining the boot configuration.

Q: What types of analog signals can I input on STM32L051C8T6? A: The STM32L051C8T6 has multiple ADC input channels (e.g., PA0 to PA7, PB0 to PB2).

Q: Is there a DAC on STM32L051C8T6? A: Yes, the DAC output is available on pin PC5.

Q: What is the function of the SWCLK pin (PA14)? A: PA14 is used as the Serial Wire Debug Clock pin (SWCLK).

Q: Can I use the STM32L051C8T6 for PWM applications? A: Yes, it supports PWM through timers on various pins like PD2 (TIM3CH1), PD3 (TIM3CH2), etc.

Q: What is the difference between PA4 and PA5? A: PA4 and PA5 are analog input channels (ADC1IN4 and ADC1IN5) but can also be used for other functions depending on configuration.

Q: How many I/O pins are available on STM32L051C8T6? A: STM32L051C8T6 provides up to 48 I/O pins.

Q: Can STM32L051C8T6 support SPI communication? A: Yes, it supports SPI communication on pins PE4 (SPI1NSS), PE5 (SPI1SCK), PE6 (SPI1MISO), and PE7 (SPI1MOSI).

Q: How do I use the Timers on STM32L051C8T6? A: Timers can be used on pins like PD2 (TIM3_CH1) for generating PWM signals, for example.

Q: What is the purpose of the PF3 pin? A: PF3 is a general-purpose I/O pin (IO2) that can be used for various functions.

Let me know if you need more details or further explanations!