STM32L072RBT6 Detailed explanation of pin function specifications and circuit principle instructions

The STM32L072RBT6 is a microcontroller from STMicroelectronics, part of their STM32L0 series. It belongs to the STM32 family of ARM Cortex-M0+ microcontrollers, which are designed for low- Power applications while providing excellent performance.

1. Package Type and Pin Count:

The STM32L072RBT6 comes in a LQFP-64 package, which has 64 pins. These 64 pins are spread across several functions for power management, communication, general I/O, and specific peripherals, each designed for specific applications in embedded systems.

2. Pin Function and Description:

Here is the detailed function description for each of the 64 pins:

Pin Number Pin Name Function Description 1 VSS Ground pin 2 VDD Power supply pin (3.3V) 3 PA13 SWDIO: Serial Wire Debug Data I/O 4 PA14 SWCLK: Serial Wire Debug Clock 5 PA15 JTDI: JTAG Data In 6 PB3 TIM2_CH2: Timer 2 Channel 2 7 PB4 TIM2_CH3: Timer 2 Channel 3 8 PB5 SPI1_SCK: SPI Clock 9 PB6 SPI1_MISO: SPI Master In Slave Out 10 PB7 SPI1_MOSI: SPI Master Out Slave In 11 PB8 I2C1_SCL: I2C Clock 12 PB9 I2C1_SDA: I2C Data 13 PC13 BOOT0: Boot Configuration Pin 14 PC14 USART1_RTS: USART1 Request to Send 15 PC15 USART1_CTS: USART1 Clear to Send 16 PD0 USART2_RX: USART2 Receiver 17 PD1 USART2_TX: USART2 Transmitter 18 PD2 TIM3_CH3: Timer 3 Channel 3 19 PD3 TIM3_CH4: Timer 3 Channel 4 20 PD4 I2C2_SCL: I2C Clock 21 PD5 I2C2_SDA: I2C Data 22 PD6 UART4_TX: UART4 Transmitter 23 PD7 UART4_RX: UART4 Receiver 24 PD8 TIM4_CH1: Timer 4 Channel 1 25 PD9 TIM4_CH2: Timer 4 Channel 2 26 PE0 USART3_TX: USART3 Transmitter 27 PE1 USART3_RX: USART3 Receiver 28 PE2 TIM5_CH1: Timer 5 Channel 1 29 PE3 TIM5_CH2: Timer 5 Channel 2 30 PE4 TIM5_CH3: Timer 5 Channel 3 31 PE5 TIM5_CH4: Timer 5 Channel 4 32 PE6 I2C3_SCL: I2C Clock 33 PE7 I2C3_SDA: I2C Data 34 PE8 SPI2_SCK: SPI Clock 35 PE9 SPI2_MISO: SPI Master In Slave Out 36 PE10 SPI2_MOSI: SPI Master Out Slave In 37 PE11 USART6_TX: USART6 Transmitter 38 PE12 USART6_RX: USART6 Receiver 39 PE13 TIM1_CH1: Timer 1 Channel 1 40 PE14 TIM1_CH2: Timer 1 Channel 2 41 PE15 TIM1_CH3: Timer 1 Channel 3 42 PF0 TIM3_CH1: Timer 3 Channel 1 43 PF1 TIM3_CH2: Timer 3 Channel 2 44 PF2 CAN1_RX: CAN Bus Receiver 45 PF3 CAN1_TX: CAN Bus Transmitter 46 PF4 Analog Input 47 PF5 Analog Input 48 PF6 Analog Input 49 PF7 Analog Input 50 PF8 VREF- 51 PF9 VREF+ 52 PF10 Analog Input 53 PF11 Analog Input 54 PF12 Analog Input 55 PF13 Analog Input 56 PF14 Analog Input 57 PF15 Analog Input 58 VDD33 3.3V Supply Pin 59 VSS33 Ground Pin 60 VDDA Analog Power Supply 61 VSSA Analog Ground 62 NRST Reset Pin 63 VCAP3V0 External Capacitor Pin 64 VREF+ Reference Voltage

3. Common FAQ for STM32L072RBT6

Q1: What is the maximum clock speed of the STM32L072RBT6? A1: The maximum clock speed of the STM32L072RBT6 is 32 MHz, powered by its ARM Cortex-M0+ core.

Q2: What is the power supply voltage range for STM32L072RBT6? A2: The STM32L072RBT6 operates within a voltage range of 1.65V to 3.6V.

Q3: Can I use all the 64 pins for I/O? A3: No, not all 64 pins are dedicated to I/O. Some pins are reserved for special functions like power, reset, and analog signals.

Q4: How much RAM does the STM32L072RBT6 have? A4: The STM32L072RBT6 has 20 KB of SRAM.

Q5: How many GPIO pins are available for general-purpose I/O? A5: The STM32L072RBT6 provides 49 general-purpose I/O pins.

Q6: Can the STM32L072RBT6 be used in low-power applications? A6: Yes, it has various low-power modes including sleep and stop modes, making it ideal for battery-powered applications.

Q7: What is the maximum frequency of the timers? A7: The timers in STM32L072RBT6 can operate at a frequency of up to 32 MHz.

Q8: Does the STM32L072RBT6 have a built-in DAC? A8: Yes, it includes a 12-bit DAC (Digital-to-Analog Converter) on selected pins.

Q9: Can I use the STM32L072RBT6 for USB applications? A9: Yes, it supports USB 2.0 full-speed functionality.

Q10: Does STM32L072RBT6 support I2C communication? A10: Yes, the STM32L072RBT6 supports up to 3 I2C interface s.

Q11: What is the maximum current that can be sourced or sunk by the GPIO pins? A11: Each GPIO pin can source or sink a maximum of 20 mA of current.

Q12: How much flash Memory is available on the STM32L072RBT6? A12: The STM32L072RBT6 comes with 192 KB of flash memory.

Q13: Does STM32L072RBT6 support external interrupts? A13: Yes, it supports external interrupts via specific GPIO pins.

Q14: Can I configure the pins for multiple functions? A14: Yes, many pins can be multiplexed for different functions like UART, SPI, or I2C.

Q15: Does STM32L072RBT6 support PWM? A15: Yes, it supports Pulse Width Modulation (PWM) through its timers.

Q16: What is the maximum temperature the STM32L072RBT6 can operate at? A16: The maximum operating temperature is 85°C.

Q17: How does the STM32L072RBT6 handle analog signals? A17: It has multiple analog inputs, with the ability to handle up to 12-bit analog-to-digital conversion.

Q18: Can I use the STM32L072RBT6 in automotive applications? A18: While it is designed for industrial and consumer applications, the STM32L072RBT6 can also be used in automotive environments within temperature limits.

Q19: Is there support for debugging and programming? A19: Yes, the STM32L072RBT6 supports SWD and JTAG interfaces for debugging and programming.

Q20: Can the STM32L072RBT6 be used with external memory? A20: Yes, the STM32L072RBT6 supports external memory through its FSMC (Flexible Static Memory Controller) and SPI-based external flash.

Conclusion:

The STM32L072RBT6 microcontroller is versatile, providing a wide range of features and pin functions suited for embedded system designs that require low power and efficient performance.