The STM32L433CCU6 is a microcontroller from STMicroelectronics, which belongs to their STM32 family of ARM Cortex-M4 based microcontrollers. This model is part of the STM32L4 series, known for its low- Power consumption and high-performance features. It is specifically designed for a range of applications, from industrial to consumer devices.
Packaging of STM32L433CCU6:
The STM32L433CCU6 comes in a LQFP-64 package, which has 64 pins. This packaging is typical for medium-level applications that require a balance of I/O pins, performance, and power consumption.
Pin Function Specifications:
Below is a detailed explanation of the pin functions and the circuit principles for STM32L433CCU6 in a table format, as well as the Frequently Asked Questions (FAQ) regarding its pin functions.
Pinout Overview: Pin Number Pin Name Function 1 VDD Power supply for logic and analog circuits. 2 VSS Ground pin for the microcontroller. 3 NRST Reset pin, active low. 4 SWDIO Serial Wire Debug I/O. Used for debugging. 5 SWCLK Serial Wire Debug Clock . Used for debugging. 6 PA13 SWDIO, serial wire debug I/O (also used as GPIO). 7 PA14 SWCLK, serial wire debug clock (also used as GPIO). 8 PA0 GPIO, general-purpose input/output, external interrupt. 9 PA1 GPIO, general-purpose input/output, external interrupt. 10 PA2 GPIO, general-purpose input/output, external interrupt. 11 PA3 GPIO, general-purpose input/output, external interrupt. 12 PA4 GPIO, general-purpose input/output, external interrupt. 13 PA5 GPIO, general-purpose input/output, external interrupt. 14 PA6 GPIO, general-purpose input/output, external interrupt. 15 PA7 GPIO, general-purpose input/output, external interrupt. 16 PB0 GPIO, general-purpose input/output, external interrupt. 17 PB1 GPIO, general-purpose input/output, external interrupt. 18 PB2 GPIO, general-purpose input/output, external interrupt. 19 PB3 GPIO, general-purpose input/output, external interrupt. 20 PB4 GPIO, general-purpose input/output, external interrupt. 21 PB5 GPIO, general-purpose input/output, external interrupt. 22 PB6 GPIO, general-purpose input/output, external interrupt. 23 PB7 GPIO, general-purpose input/output, external interrupt. 24 PC0 GPIO, general-purpose input/output, external interrupt. 25 PC1 GPIO, general-purpose input/output, external interrupt. 26 PC2 GPIO, general-purpose input/output, external interrupt. 27 PC3 GPIO, general-purpose input/output, external interrupt. 28 PC4 GPIO, general-purpose input/output, external interrupt. 29 PC5 GPIO, general-purpose input/output, external interrupt. 30 PD0 GPIO, general-purpose input/output, external interrupt. 31 PD1 GPIO, general-purpose input/output, external interrupt. 32 PD2 GPIO, general-purpose input/output, external interrupt. 33 PD3 GPIO, general-purpose input/output, external interrupt. 34 PD4 GPIO, general-purpose input/output, external interrupt. 35 PD5 GPIO, general-purpose input/output, external interrupt. 36 PD6 GPIO, general-purpose input/output, external interrupt. 37 PD7 GPIO, general-purpose input/output, external interrupt. 38 PE0 GPIO, general-purpose input/output, external interrupt. 39 PE1 GPIO, general-purpose input/output, external interrupt. 40 PE2 GPIO, general-purpose input/output, external interrupt. 41 PE3 GPIO, general-purpose input/output, external interrupt. 42 PE4 GPIO, general-purpose input/output, external interrupt. 43 PE5 GPIO, general-purpose input/output, external interrupt. 44 PE6 GPIO, general-purpose input/output, external interrupt. 45 PE7 GPIO, general-purpose input/output, external interrupt. 46 PF0 GPIO, general-purpose input/output, external interrupt. 47 PF1 GPIO, general-purpose input/output, external interrupt. 48 PF2 GPIO, general-purpose input/output, external interrupt. 49 PF3 GPIO, general-purpose input/output, external interrupt. 50 PF4 GPIO, general-purpose input/output, external interrupt. 51 PF5 GPIO, general-purpose input/output, external interrupt. 52 PF6 GPIO, general-purpose input/output, external interrupt. 53 PF7 GPIO, general-purpose input/output, external interrupt. 54 VDDIO2 Power supply for I/O banks. 55 VSSA Ground pin for analog circuits. 56 VDDA Power supply for analog circuits. 57 NC No connect. 58 NC No connect. 59 NC No connect. 60 NC No connect. 61 NC No connect. 62 NC No connect. 63 NC No connect. 64 NC No connect. 20 FAQ Related to STM32L433CCU6 Pin Functions:Q1: What is the function of pin PA13 in STM32L433CCU6? A1: PA13 is used as the SWDIO (Serial Wire Debug I/O) pin, which is used for debugging and programming the microcontroller.
Q2: Can I use PA14 for general-purpose input/output? A2: Yes, PA14 can be used as GPIO (General Purpose Input/Output) but it is primarily designated as SWCLK for serial wire debug clock.
Q3: What is the default state of NRST pin? A3: The NRST pin is used for reset. It is an active-low reset pin.
Q4: What does the VDD pin provide in STM32L433CCU6? A4: VDD is the power supply pin for both the logic and analog circuits.
Q5: Is there a dedicated analog ground pin in this microcontroller? A5: Yes, the VSSA pin is dedicated as the analog ground for the analog circuits.
Q6: How do I use pin PA0 in STM32L433CCU6? A6: PA0 can be used as GPIO, a general-purpose input/output, and it can also serve as an external interrupt.
Q7: Can I use the SWDIO and SWCLK pins as GPIO? A7: Yes, both PA13 (SWDIO) and PA14 (SWCLK) can be used as GPIOs when debugging is not required.
Q8: What is the maximum operating voltage for VDD? A8: The maximum operating voltage for VDD is 3.6V.
Q9: What is the voltage range for analog supply VDDA? A9: The voltage range for VDDA is also 3.6V.
Q10: How many general-purpose input/output pins are available in STM32L433CCU6? A10: STM32L433CCU6 has up to 51 GPIO pins available for various functions.
Q11: Is it possible to use pin PA7 for UART communication? A11: Yes, PA7 can be used as UART TX or RX for communication.
Q12: Can I connect external devices to the VDDIO2 pin? A12: Yes, VDDIO2 provides power to I/O banks and can be used for other external devices.
Q13: What happens if I leave the NC pins unconnected? A13: The NC (No Connect) pins can be left unconnected as they do not serve any function.
Q14: Can the pins be configured to function in alternate modes? A14: Yes, most pins can be configured to work in alternate functions such as UART, SPI, I2C, etc.
Q15: What is the maximum current allowed on each I/O pin? A15: Each I/O pin can source or sink up to 25mA of current.
Q16: How do I use PA6 as an external interrupt? A16: PA6 can be configured as GPIO and set up to trigger on an external interrupt.
Q17: Are there any analog functions available on pins? A17: Yes, many of the pins, such as PA0, PA1, PA2, etc., can be used for ADC (Analog-to-Digital Conversion) functions.
Q18: Can I use PB6 and PB7 for SPI communication? A18: Yes, PB6 and PB7 can be used for SPI as SCK (Clock) and MISO/MOSI (depending on the configuration).
Q19: Is there any special feature related to pins PF0 to PF7? A19: Pins PF0 to PF7 are typically used for GPIO, but may also be configured for external interrupts and other functions.
Q20: What is the function of the VDDA pin? A20: The VDDA pin is the analog supply voltage pin, and it provides power to the analog sections of the microcontroller.
This detailed pinout and FAQ list should provide you with a complete understanding of the STM32L433CCU6 microcontroller's pin functions and usage.
