component
STM32L433CCT3
Public Made by Adomby 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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l433cct3.step/stm32l433cct3.glbare 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).
# 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](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588894017823625216) (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](docs/stm32l433cct3-datasheet.pdf)