The part number "STM32F100RCT6B" belongs to the STM32 series of microcontrollers produced by STMicroelectronics. This specific model is based on the ARM Cortex-M3 core and is part of the STM32F1 family, which is designed for a range of applications in embedded systems.
Package Type and Pin Count
The STM32F100RCT6B is a LQFP-48 package, meaning it has 48 pins. Here's a detailed breakdown of the pins and their functions. This will cover all the 48 pins, as you requested.
Pinout Diagram and Pin Functions (48-pin LQFP)
Pin Number Pin Name Function Description 1 VSS Ground pin (GND). Connect to the system ground. 2 VDD Power supply pin. Connect to the system power supply, typically 3.3V or 5V depending on the application. 3 NRST Reset pin. Active low, used to reset the microcontroller. 4 SWDIO Serial Wire Debug Input/Output. Used for debugging purposes with SWD interface . 5 SWCLK Serial Wire Debug Clock . Used with SWDIO for debugging purposes. 6 PA13 SWDIO or JTDI (Test Input). Can be used as a debug interface or general I/O. 7 PA14 SWCLK or JTDO (Test Output). Can be used as a debug interface or general I/O. 8 PA15 JTCK (Test Clock). Part of the JTAG interface or can be used as general I/O. 9 PB0 GPIO (General Purpose Input/Output), can also serve as a USART1 RX pin (Receive). 10 PB1 GPIO, or USART1 TX pin (Transmit). 11 PB3 GPIO, or SPI1 SCK pin (Serial Clock). 12 PB4 GPIO, or SPI1 MISO pin (Master In Slave Out). 13 PB5 GPIO, or SPI1 MOSI pin (Master Out Slave In). 14 PB6 GPIO, or I2C1 SCL pin (Serial Clock Line). 15 PB7 GPIO, or I2C1 SDA pin (Serial Data Line). 16 PB8 GPIO, or USART3 TX pin (Transmit). 17 PB9 GPIO, or USART3 RX pin (Receive). 18 PC13 GPIO, often used as an external interrupt pin. 19 PC14 GPIO, or TAMPER pin (used for tamper detection). 20 PC15 GPIO, or LSE (Low-Speed External) oscillator input. 21 PD0 GPIO, or USART2 RX pin (Receive). 22 PD1 GPIO, or USART2 TX pin (Transmit). 23 PD2 GPIO, or I2C2 SCL pin (Serial Clock Line). 24 PD3 GPIO, or I2C2 SDA pin (Serial Data Line). 25 PD4 GPIO, or SPI2 MISO pin (Master In Slave Out). 26 PD5 GPIO, or SPI2 MOSI pin (Master Out Slave In). 27 PD6 GPIO, or SPI2 SCK pin (Serial Clock). 28 PD7 GPIO, or SPI2 NSS pin (Slave Select). 29 PD8 GPIO, or UART4 TX pin (Transmit). 30 PD9 GPIO, or UART4 RX pin (Receive). 31 PE0 GPIO, or I2C1 SCL pin (Serial Clock Line). 32 PE1 GPIO, or I2C1 SDA pin (Serial Data Line). 33 PE2 GPIO, or CAN1 RX pin (CAN Receive). 34 PE3 GPIO, or CAN1 TX pin (CAN Transmit). 35 PE4 GPIO, or EXTI4 (External Interrupt). 36 PE5 GPIO, or EXTI5 (External Interrupt). 37 PE6 GPIO, or TIM3 CH1 (Timer Channel 1). 38 PE7 GPIO, or TIM3 CH2 (Timer Channel 2). 39 PE8 GPIO, or TIM3 CH3 (Timer Channel 3). 40 PE9 GPIO, or TIM3 CH4 (Timer Channel 4). 41 PE10 GPIO, or USART1 TX pin (Transmit). 42 PE11 GPIO, or USART1 RX pin (Receive). 43 PE12 GPIO, or TIM1 CH1 (Timer Channel 1). 44 PE13 GPIO, or TIM1 CH2 (Timer Channel 2). 45 PE14 GPIO, or TIM1 CH3 (Timer Channel 3). 46 PE15 GPIO, or TIM1 CH4 (Timer Channel 4). 47 VSS Ground pin (GND). 48 VDD Power supply pin.Pin Function FAQ for STM32F100RCT6B (48 pins)
Q: What is the function of pin PA13 on the STM32F100RCT6B? A: PA13 serves as the SWDIO pin for Serial Wire Debug or can be used as JTDI for the JTAG interface.
Q: How do I reset the STM32F100RCT6B? A: Pin NRST is used to reset the device. It is an active-low pin.
Q: Can PA0 be used for analog input? A: Yes, PA0 can be configured as an analog input (ADC input).
Q: What is the maximum voltage for the VDD pin? A: The VDD pin supports voltages typically between 2.0V to 3.6V for stable operation.
Q: What are the alternate functions of pin PA14 on the STM32F100RCT6B? A: PA14 serves as the SWCLK pin for Serial Wire Debug, or it can be used as JTDO for JTAG.
Q: Can I use pin PB6 for I2C communication? A: Yes, PB6 can serve as the I2C1 SCL pin (Serial Clock Line).
Q: What is the function of pin PD5? A: PD5 is used for SPI2 MOSI (Master Out Slave In) communication.
Q: How can I configure pin PB3? A: PB3 can be configured as a general-purpose I/O or as SPI1 SCK (Serial Clock).
Q: Is it possible to use PB0 and PB1 for UART communication? A: Yes, PB0 can be used as USART1 RX (Receive), and PB1 can be used as USART1 TX (Transmit).
Q: Does the STM32F100RCT6B support PWM? A: Yes, it supports PWM on pins connected to timer channels like PA8, PA9, PA10, and PA11.
Q: Can I use pin PE2 for CAN communication? A: Yes, PE2 can be used as the CAN1 RX pin.
Q: What is the purpose of pin PD0? A: PD0 is used as USART2 RX (Receive).
Q: What kind of external memory interface does this MCU support? A: The STM32F100RCT6B does not have an external memory interface. However, it supports SPI and I2C communication.
Q: Can I use the STM32F100RCT6B in low-power applications? A: Yes, it has multiple low-power modes including Sleep, Stop, and Standby.
Q: What is the function of PA15? A: PA15 can be used as JTCK (JTAG Clock) or as a general-purpose I/O pin.
Q: Can pin PC13 be used as an interrupt? A: Yes, PC13 is typically used as an external interrupt input.
Q: Can I use PE1 for I2C communication? A: Yes, PE1 can serve as the I2C1 SDA (Serial Data Line).
Q: What is the maximum current rating for I/O pins? A: The maximum current per I/O pin is 25mA in push-pull configuration.
Q: How many timers does the STM32F100RCT6B have? A: It has several timers, including TIM1, TIM2, TIM3, and TIM4, which can be used for PWM, input capture, and output compare functions.
Q: How do I connect an external crystal oscillator? A: External crystals can be connected to pins PC14 (LSE) or PC15 (LSE) for low-speed external oscillators.
This provides an overview of all 48 pins and their functions on the STM32F100RCT6B microcontroller, along with answers to common questions.