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STM32L051K8T6
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
markdownSTM32L051K8T6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-32(7x7)
STM32L051K8T6 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 | Positive power supply input, 1.65 V to 3.6 V |
| 2 | PC14-OSC32_IN | bidirectional | Port C pin 14, 5V tolerant I/O, alternate function OSC32_IN for 32 kHz oscillator input |
| 3 | PC15-OSC32_OUT | bidirectional | Port C pin 15, standard 3.3V I/O, alternate function OSC32_OUT for 32 kHz oscillator output |
| 4 | NRST | bidirectional | Bidirectional reset input with embedded weak pull-up resistor, active low |
| 5 | VDDA | power_in | Analog power supply input, 1.65 V to 3.6 V |
| 6 | PA0 | bidirectional | Port A pin 0, standard 3.3V I/O with alternate functions TIM2_CH1, USART2_CTS, TIM2_ETR, COMP1_OUT and additional functions COMP1_INM6, ADC_IN0, RTC_TAMP2/WKUP1 |
| 7 | PA1 | bidirectional | Port A pin 1, 5V tolerant I/O with alternate functions EVENTOUT, TIM2_CH2, USART2_RTS/DE, TIM21_ETR and additional functions COMP1_INP, ADC_IN1 |
| 8 | PA2 | bidirectional | Port A pin 2, 5V tolerant I/O with alternate functions TIM21_CH1, TIM2_CH3, USART2_TX, COMP2_OUT and additional functions COMP2_INM6, ADC_IN2 |
| 9 | PA3 | bidirectional | Port A pin 3, 5V tolerant I/O with alternate functions TIM21_CH2, TIM2_CH4, USART2_RX and additional functions COMP2_INP, ADC_IN3 |
| 10 | PA4 | bidirectional | Port A pin 4, standard 3.3V I/O with alternate functions SPI1_NSS, USART2_CK, TIM22_ETR and additional functions COMP1_INM4, COMP2_INM4, ADC_IN4 |
| 11 | PA5 | bidirectional | Port A pin 5, standard 3.3V I/O with alternate functions SPI1_SCK, TIM2_ETR, TIM2_CH1 and additional functions COMP1_INM5, COMP2_INM5, ADC_IN5 |
| 12 | PA6 | bidirectional | Port A pin 6, 5V tolerant I/O with alternate functions SPI1_MISO, LPUART1_CTS, TIM22_CH1, EVENTOUT, COMP1_OUT and additional function ADC_IN6 |
| 13 | PA7 | bidirectional | Port A pin 7, 5V tolerant I/O with alternate functions SPI1_MOSI, TIM22_CH2, EVENTOUT, COMP2_OUT and additional function ADC_IN7 |
| 14 | PB0 | bidirectional | Port B pin 0, 5V tolerant I/O with alternate function EVENTOUT and additional functions ADC_IN8, VREF_OUT |
| 15 | PB1 | bidirectional | Port B pin 1, 5V tolerant I/O with alternate function LPUART1_RTS/DE and additional functions ADC_IN9, VREF_OUT |
| 16 | VSS | power_in | Ground reference pin, negative power supply |
| 17 | VDD | power_in | Positive power supply input, 1.65 V to 3.6 V |
| 18 | PA8 | bidirectional | Port A pin 8, 5V tolerant I/O with alternate functions MCO, EVENTOUT, USART1_CK |
| 19 | PA9 | bidirectional | Port A pin 9, 5V tolerant I/O with alternate functions MCO, USART1_TX |
| 20 | PA10 | bidirectional | Port A pin 10, 5V tolerant I/O with alternate function USART1_RX |
| 21 | PA11 | bidirectional | Port A pin 11, 5V tolerant I/O supplied by VDDIO2, alternate functions SPI1_MISO, EVENTOUT, USART1_CTS, COMP1_OUT |
| 22 | PA12 | bidirectional | Port A pin 12, 5V tolerant I/O supplied by VDDIO2, alternate functions SPI1_MOSI, EVENTOUT, USART1_RTS/DE, COMP2_OUT |
| 23 | PA13 | bidirectional | Port A pin 13, 5V tolerant I/O, alternate function SWDIO for serial wire debug port |
| 24 | PA14 | bidirectional | Port A pin 14, 5V tolerant I/O with alternate functions SWCLK for serial wire debug port and USART2_TX |
| 25 | PA15 | bidirectional | Port A pin 15, 5V tolerant I/O with alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX, TIM2_CH1 |
| 26 | PB3 | bidirectional | Port B pin 3, 5V tolerant I/O with alternate functions SPI1_SCK, TIM2_CH2, EVENTOUT and additional function COMP2_INN |
| 27 | PB4 | bidirectional | Port B pin 4, 5V tolerant I/O with alternate functions SPI1_MISO, EVENTOUT, TIM22_CH1 and additional function COMP2_INP |
| 28 | PB5 | bidirectional | Port B pin 5, 5V tolerant I/O with alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM22_CH2 and additional function COMP2_INP |
| 29 | PB6 | bidirectional | Port B pin 6, 5V tolerant I/O, FM+ capable, with alternate functions USART1_TX, I2C1_SCL, LPTIM1_ETR and additional function COMP2_INP |
| 30 | PB7 | bidirectional | Port B pin 7, 5V tolerant I/O, FM+ capable, with alternate functions USART1_RX, I2C1_SDA, LPTIM1_IN2 and additional functions COMP2_INP, PVD_IN |
| 31 | BOOT0 | input | Boot mode selection pin, dedicated BOOT0 input for selecting boot from Flash or bootloader |
| 32 | VSS | power_in | Ground reference pin, negative power supply |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-32(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 32 |
CAD (KiCad official)
- Symbol:
STM32L051K8T6 - Footprint:
Package_QFP:LQFP-32_7x7mm_P0.8mm - 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l051k8t6-etched.step/stm32l051k8t6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l051k8t6.step/stm32l051k8t6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (133 pp, sha256
232fdca5c41218a1, retrieved 2026-10-01, 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).