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STM32L422KBT6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-32(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32L422KBT6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-32(7x7)
STM32L422KBT6 from STMicroelectronics, in a LQFP-32(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 | VDD | power_in | Main power supply pin, 1.71 V to 3.6 V. |
| 2 | PC14 | bidirectional | 32 kHz oscillator input (OSC32_IN) or general-purpose I/O, 5V tolerant. |
| 3 | PC15 | bidirectional | 32 kHz oscillator output (OSC32_OUT) or general-purpose I/O, 5V tolerant. |
| 4 | NRST | bidirectional | External reset input with embedded weak pull-up resistor, bidirectional reset pin. |
| 5 | VDDA | power_in | Analog power supply and positive reference voltage (VREF+), 1.62 V to 3.6 V when ADC/COMP used. |
| 6 | PA0 | bidirectional | General-purpose I/O with clock input capability (CK_IN), 5V tolerant with analog switch function, ADC channel input. |
| 7 | PA1 | bidirectional | General-purpose I/O, 5V tolerant with analog switch function, supports TIM2/I2C1/SPI1/USART2/TIM15 alternate functions, ADC channel input. |
| 8 | PA2 | bidirectional | General-purpose I/O, 5V tolerant with analog switch function, supports TIM2/USART2/LPUART1/QUADSPI alternate functions, ADC channel input. |
| 9 | PA3 | bidirectional | General-purpose I/O, 3.6V supply tolerant with analog switch function, supports TIM2/USART2/LPUART1/QUADSPI alternate functions, OPAMP1 output. |
| 10 | PA4 | bidirectional | General-purpose I/O, 3.6V supply tolerant with analog switch function, supports SPI1/USART2/LPTIM2 alternate functions, ADC channel input. |
| 11 | PA5 | bidirectional | General-purpose I/O, 3.6V supply tolerant with analog switch function, supports TIM2/SPI1/LPTIM2 alternate functions, ADC channel input. |
| 12 | PA6 | bidirectional | General-purpose I/O, 5V tolerant with analog switch function, supports TIM1/SPI1/COMP1/USART3/LPUART1/QUADSPI/TIM16 alternate functions, ADC channel input. |
| 13 | PA7 | bidirectional | General-purpose I/O, 5V tolerant with FM+ I2C and analog switch function, supports TIM1/I2C3/SPI1/QUADSPI alternate functions, ADC channel input. |
| 14 | PB0 | bidirectional | General-purpose I/O, 5V tolerant with analog switch function, supports TIM1/SPI1/USART3/QUADSPI/TIM16 alternate functions, ADC channel input. |
| 15 | PB1 | bidirectional | General-purpose I/O, 5V tolerant with analog switch function, supports TIM1/USART3/LPUART1/QUADSPI/LPTIM2 alternate functions, ADC channel input. |
| 16 | VSS | power_in | Ground (reference potential for digital circuits). |
| 17 | VDD | power_in | Main power supply pin, 1.71 V to 3.6 V. |
| 18 | PA8 | bidirectional | General-purpose I/O, 5V tolerant, supports MCO/TIM1/USART1/LPTIM2 alternate functions. |
| 19 | PA9 | bidirectional | General-purpose I/O, 5V tolerant with FM+ I2C capability, supports TIM1/I2C1/USART1/TIM15 alternate functions. |
| 20 | PA10 | bidirectional | General-purpose I/O, 5V tolerant with FM+ I2C capability, supports TIM1/I2C1/USART1/USB alternate functions. |
| 21 | PA11 | bidirectional | General-purpose I/O, 5V tolerant with USB device function, supports TIM1/SPI1/COMP1/USART1/USB-DM alternate functions. |
| 22 | PA12 | bidirectional | General-purpose I/O, 5V tolerant with USB device function, supports TIM1/SPI1/USART1/USB-DP alternate functions. |
| 23 | PA13 | bidirectional | JTAG/SWD debug interface (SWDIO) or general-purpose I/O, 5V tolerant, supports IR_OUT/USB_NOE alternate functions. |
| 24 | PA14 | bidirectional | JTAG/SWD debug interface (SWCLK) or general-purpose I/O, 5V tolerant, supports LPTIM1_OUT/I2C1_SMBA alternate functions. |
| 25 | PA15 | bidirectional | JTAG debug input (JTDI) or general-purpose I/O, 5V tolerant, supports TIM2/USART2/SPI1/USART3/TSC alternate functions. |
| 26 | PB3 | bidirectional | JTAG debug output (TRACESWO) or general-purpose I/O, 5V tolerant with analog switch function, supports TIM2/SPI1/USART1/TSC alternate functions. |
| 27 | PB4 | bidirectional | JTAG reset (NJTRST) or general-purpose I/O, 5V tolerant with FM+ I2C and analog switch function, supports I2C3/SPI1/USART1/TSC alternate functions. |
| 28 | PB5 | bidirectional | General-purpose I/O, 5V tolerant, supports LPTIM1/I2C1/SPI1/USART1/TSC/TIM16 alternate functions. |
| 29 | PB6 | bidirectional | General-purpose I/O, 5V tolerant with FM+ I2C and analog switch function, supports LPTIM1/I2C1/USART1/TSC/TIM16 alternate functions. |
| 30 | PB7 | bidirectional | General-purpose I/O, 5V tolerant with FM+ I2C and analog switch function, supports LPTIM1/I2C1/USART1/TSC alternate functions, programmable voltage detector input. |
| 31 | PH3 | bidirectional | Boot configuration input (BOOT0) or general-purpose I/O, 5V tolerant. |
| 32 | VSS | power_in | Ground (reference potential for digital circuits). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-32(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 32 |
CAD (KiCad official)
- Symbol:
STM32L422KBT6 - Footprint:
Package_QFP:LQFP-32_7x7mm_P0.8mm - 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l422kbt6-etched.step/stm32l422kbt6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l422kbt6.step/stm32l422kbt6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (184 pp, sha256
6bef461ef929a17c, retrieved 2026-10-07, 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).