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Contents

README

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STM32L412K8T6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-32(7x7)

STM32L412K8T6 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 supply voltage, 1.71 V to 3.6 V.
2 PC14-OSC32_IN bidirectional GPIO PC14, 5V-tolerant, 32 kHz OSC32_IN alternate function for crystal oscillator.
3 PC15-OSC32_OUT bidirectional GPIO PC15, 5V-tolerant, 32 kHz OSC32_OUT alternate function for crystal oscillator.
4 NRST input Active-low reset input with embedded weak pull-up resistor.
5 VDDA/VREF+ power_in Analog supply voltage and positive reference for ADC/comparator, 1.62 V to 3.6 V.
6 PA0-CK_IN bidirectional GPIO PA0, 5V-tolerant, analog input, supports timer/USART alternate functions.
7 PA1 bidirectional GPIO PA1, 5V-tolerant, analog input, supports timer/I2C/SPI/USART alternate functions.
8 PA2 bidirectional GPIO PA2, 5V-tolerant, analog input, supports timer/USART/LPUART/QUADSPI functions.
9 PA3 bidirectional GPIO PA3, 3.6V-tolerant, analog input, supports timer/USART/LPUART/QUADSPI functions.
10 PA4 bidirectional GPIO PA4, 3.6V-tolerant, analog input, supports SPI/USART/timer alternate functions.
11 PA5 bidirectional GPIO PA5, 3.6V-tolerant, analog input, supports timer/SPI/LPUART alternate functions.
12 PA6 bidirectional GPIO PA6, 5V-tolerant, analog input, supports timer/SPI/USART/QUADSPI functions.
13 PA7 bidirectional GPIO PA7, 5V-tolerant FM+ I2C capable, analog input, supports timer/SPI/I2C/QUADSPI.
14 PB0 bidirectional GPIO PB0, 5V-tolerant, analog input, supports timer/SPI/USART/QUADSPI functions.
15 PB1 bidirectional GPIO PB1, 5V-tolerant, analog input, supports timer/USART/QUADSPI/LPUART functions.
16 VSS power_in Ground reference, 0 V, return path for all supply currents.
17 VDD power_in Main supply voltage, 1.71 V to 3.6 V.
18 PA8 bidirectional GPIO PA8, 5V-tolerant, supports MCO clock output or timer/USART functions.
19 PA9 bidirectional GPIO PA9, 5V-tolerant FM+ I2C capable, supports USART1 TX or I2C/timer functions.
20 PA10 bidirectional GPIO PA10, 5V-tolerant FM+ I2C capable, supports USART1 RX or I2C/USB functions.
21 PA11 bidirectional GPIO PA11, 5V-tolerant USB capable, supports USB DM or USART/timer functions.
22 PA12 bidirectional GPIO PA12, 5V-tolerant USB capable, supports USB DP or USART/SPI functions.
23 PA13 bidirectional GPIO PA13 (JTMS/SWDIO), 5V-tolerant, serial wire debug/JTAG interface pin.
24 PA14 bidirectional GPIO PA14 (JTCK/SWCLK), 5V-tolerant, serial wire debug/JTAG clock pin.
25 PA15 bidirectional GPIO PA15 (JTDI), 5V-tolerant, JTAG data input or timer/USART/SPI functions.
26 PB3 bidirectional GPIO PB3 (JTDO/TRACESWO), 5V-tolerant, analog capable, JTAG output or timer/SPI/USART.
27 PB4 bidirectional GPIO PB4 (NJTRST), 5V-tolerant FM+ I2C capable, JTAG reset or I2C/SPI/USART.
28 PB5 bidirectional GPIO PB5, 5V-tolerant, supports SPI1 MOSI, I2C1 timing, and trace/USART functions.
29 PB6 bidirectional GPIO PB6, 5V-tolerant FM+ I2C capable, supports I2C1 SCL or USART1 TX/trace.
30 PB7 bidirectional GPIO PB7, 5V-tolerant FM+ I2C capable, supports I2C1 SDA or USART1 RX, with PVD input.
31 PH3-BOOT0 bidirectional GPIO PH3 (BOOT0), 5V-tolerant, selects boot source from internal Flash or system bootloader.
32 VSS power_in Ground reference, 0 V, return path for all supply currents.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-32(7x7)
Category Embedded Processors & Controllers
Pins 32

CAD (KiCad official)

  • Symbol: STM32L412K8T6
  • Footprint: Package_QFP:LQFP-32_7x7mm_P0.8mm
  • 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm32l412k8t6-etched.step / stm32l412k8t6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32l412k8t6.step / stm32l412k8t6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (193 pp, sha256 5104ae3be2936485, retrieved 2026-09-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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