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STM32L433CCT3

Public Made by Adom

by adom

STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.

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STM32L433CCT3

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

STM32L433CCT3 from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VBAT power_in Backup domain power supply (1.55-3.6 V) for RTC and 32x32-bit backup registers
2 PC13 bidirectional GPIO port C bit 13 with RTC tamper/timestamp/output and wakeup functions
3 PC14-OSC32_IN bidirectional GPIO port C bit 14 with 32 kHz RTC crystal oscillator input function
4 PC15-OSC32_OUT bidirectional GPIO port C bit 15 with 32 kHz RTC crystal oscillator output function
5 PH0-OSC_IN bidirectional GPIO port H bit 0 with 4-48 MHz main oscillator input function
6 PH1-OSC_OUT bidirectional GPIO port H bit 1 with 4-48 MHz main oscillator output function
7 NRST bidirectional System reset pin with internal weak pull-up resistor, active low
8 VSSA/VREF- power_out Analog ground and negative voltage reference (0 V)
9 VDDA/VREF+ power_in Analog power supply and positive voltage reference (1.62-3.6 V)
10 PA0 bidirectional GPIO port A bit 0 with ADC analog input and timer/USART/comparator alternate functions
11 PA1 bidirectional GPIO port A bit 1 with ADC analog input and I2C/SPI/timer alternate functions
12 PA2 bidirectional GPIO port A bit 2 with ADC analog input and USART/timer/QUADSPI alternate functions
13 PA3 bidirectional GPIO port A bit 3 (3.6 V tolerant) with ADC analog input and USART/QUADSPI/SAI alternate functions
14 PA4 bidirectional GPIO port A bit 4 (3.6 V tolerant) with ADC analog input and DAC1_OUT1 function
15 PA5 bidirectional GPIO port A bit 5 (3.6 V tolerant) with ADC analog input and DAC1_OUT2 function
16 PA6 bidirectional GPIO port A bit 6 with ADC analog input and timer/SPI/comparator/QUADSPI alternate functions
17 PA7 bidirectional GPIO port A bit 7 with ADC analog input and timer/SPI/QUADSPI/comparator alternate functions
18 PB0 bidirectional GPIO port B bit 0 with ADC analog input and timer/SPI/USART/QUADSPI alternate functions
19 PB1 bidirectional GPIO port B bit 1 with ADC analog input and timer/USART/LPUART/QUADSPI alternate functions
20 PB2 bidirectional GPIO port B bit 2 with RTC/LPTIM/I2C/LCD control voltage alternate functions
21 PB10 bidirectional GPIO port B bit 10 with timer/I2C/SPI/USART/LPUART/QUADSPI/LCD segment alternate functions
22 PB11 bidirectional GPIO port B bit 11 with timer/I2C/USART/LPUART/QUADSPI/LCD segment alternate functions
23 VSS power_out Ground return pin for digital power supply circuits
24 VDD power_in Digital power supply (1.71-3.6 V)
25 PB12 bidirectional GPIO port B bit 12 with timer/I2C/SPI/USART/LPUART/SWPMI/LCD segment alternate functions
26 PB13 bidirectional GPIO port B bit 13 with timer/I2C/SPI/USART/LPUART/SWPMI/LCD segment alternate functions
27 PB14 bidirectional GPIO port B bit 14 with timer/I2C/SPI/USART/SWPMI/LCD segment alternate functions
28 PB15 bidirectional GPIO port B bit 15 with RTC/timer/SPI/SWPMI/LCD segment alternate functions
29 PA8 bidirectional GPIO port A bit 8 with MCO/timer/USART/LCD common/SWPMI/SAI alternate functions
30 PA9 bidirectional GPIO port A bit 9 with timer/I2C/USART/LCD common/SAI alternate functions
31 PA10 bidirectional GPIO port A bit 10 with timer/I2C/USART/USB/LCD common/SAI alternate functions
32 PA11 bidirectional GPIO port A bit 11 (USB supplied) with USB DM and timer/SPI/CAN/comparator alternate functions
33 PA12 bidirectional GPIO port A bit 12 (USB supplied) with USB DP and timer/SPI/CAN alternate functions
34 PA13 (JTMS-SWDIO) bidirectional JTAG/SWD serial wire debug transmit/receive or GPIO port A bit 13 with internal pull-up after reset
35 VSS power_out Ground return pin for digital power supply circuits
36 VDDUSB power_in USB 2.0 full-speed power supply (3.0-3.6 V when USB used, optional when USB unused)
37 PA14 (JTCK-SWCLK) bidirectional JTAG/SWD serial wire debug clock or GPIO port A bit 14 with LPTIM/I2C alternate functions and internal pull-down
38 PA15 (JTDI) bidirectional JTAG debug input or GPIO port A bit 15 with timer/USART/SPI/LCD segment alternate functions
39 PB3 (JTDO-TRACESWO) bidirectional JTAG debug output/trace SWO or GPIO port B bit 3 with timer/SPI/USART/LCD segment/SAI alternate functions
40 PB4 (NJTRST) bidirectional JTAG test reset or GPIO port B bit 4 with I2C/SPI/USART/LCD segment/SAI alternate functions
41 PB5 bidirectional GPIO port B bit 5 with LPTIM/I2C/SPI/USART/LCD segment/timer alternate functions
42 PB6 bidirectional GPIO port B bit 6 with LPTIM/I2C/USART/SAI/timer alternate functions
43 PB7 bidirectional GPIO port B bit 7 with LPTIM/I2C/USART/LCD segment/timer/comparator alternate functions
44 PH3-BOOT0 input Boot mode selection pin, selects between flash memory boot and system bootloader execution at reset
45 PB8 bidirectional GPIO port B bit 8 with I2C/CAN/LCD segment/SDMMC/timer/SAI alternate functions
46 PB9 bidirectional GPIO port B bit 9 with I2C/SPI/CAN/LCD common/SDMMC/SAI alternate functions
47 VSS power_out Ground return pin for digital power supply circuits
48 VDD power_in Digital power supply (1.71-3.6 V)

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-48(7x7)
Category Embedded Processors & Controllers
Pins 48

CAD (KiCad official)

  • Symbol: STM32L433CCT3
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm32l433cct3-etched.step / stm32l433cct3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32l433cct3.step / stm32l433cct3.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: STMicroelectronics datasheet (227 pp, sha256 471e1cceea40b1fa, retrieved 2026-10-05, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF