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STM32L051K8T7
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
markdownSTM32L051K8T7
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-32(7x7)
STM32L051K8T7 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 | Digital supply pin; the features list gives a 1.65 V to 3.6 V power supply, with all voltages referenced to VSS. |
| 2 | PC14-OSC32_IN | bidirectional | 5 V tolerant (FT) I/O with additional function OSC32_IN for the 32 kHz oscillator; all I/Os are floating inputs during and after reset unless a note states otherwise. |
| 3 | PC15-OSC32_OUT (PC15) | bidirectional | Standard 3.3 V I/O (TC) with additional function OSC32_OUT for the 32 kHz oscillator. |
| 4 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor (RST I/O structure). |
| 5 | VDDA | power_in | Analog supply pin for the analog peripherals, with all voltages referenced to VSS. |
| 6 | PA0 | bidirectional | Standard 3.3 V I/O (TC) with alternate functions TIM2_CH1, USART2_CTS, TIM2_ETR and COMP1_OUT, and additional functions COMP1_INM6, ADC_IN0 and RTC_TAMP2/WKUP1. |
| 7 | PA1 | bidirectional | 5 V tolerant (FT) I/O with alternate functions EVENTOUT, TIM2_CH2, USART2_RTS/USART2_DE and TIM21_ETR, and additional functions COMP1_INP and ADC_IN1. |
| 8 | PA2 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM21_CH1, TIM2_CH3, USART2_TX and COMP2_OUT, and additional functions COMP2_INM6 and ADC_IN2. |
| 9 | PA3 | bidirectional | 5 V tolerant (FT) I/O with alternate functions TIM21_CH2, TIM2_CH4 and USART2_RX, and additional functions COMP2_INP and ADC_IN3. |
| 10 | PA4 | bidirectional | Standard 3.3 V I/O (TC) with alternate functions SPI1_NSS, USART2_CK and TIM22_ETR, and additional functions COMP1_INM4, COMP2_INM4 and ADC_IN4. |
| 11 | PA5 | bidirectional | Standard 3.3 V I/O (TC) with alternate functions SPI1_SCK, TIM2_ETR and TIM2_CH1, and additional functions COMP1_INM5, COMP2_INM5 and ADC_IN5. |
| 12 | PA6 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MISO, LPUART1_CTS, TIM22_CH1, EVENTOUT and COMP1_OUT, and additional function ADC_IN6. |
| 13 | PA7 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MOSI, TIM22_CH2, EVENTOUT and COMP2_OUT, and additional function ADC_IN7. |
| 14 | PB0 | bidirectional | 5 V tolerant (FT) I/O with alternate function EVENTOUT, and additional functions ADC_IN8 and VREF_OUT. |
| 15 | PB1 | bidirectional | 5 V tolerant (FT) I/O with alternate function LPUART1_RTS/LPUART1_DE, and additional functions ADC_IN9 and VREF_OUT. |
| 16 | VSS | power_in | Ground pin; all voltages are referenced to VSS. |
| 17 | VDD | power_in | Digital supply pin; the features list gives a 1.65 V to 3.6 V power supply, with all voltages referenced to VSS. |
| 18 | PA8 | bidirectional | 5 V tolerant (FT) I/O with alternate functions MCO, EVENTOUT and USART1_CK. |
| 19 | PA9 | bidirectional | 5 V tolerant (FT) I/O with alternate functions MCO and USART1_TX. |
| 20 | PA10 | bidirectional | 5 V tolerant (FT) I/O with alternate function USART1_RX. |
| 21 | PA11 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MISO, EVENTOUT, USART1_CTS and COMP1_OUT. |
| 22 | PA12 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MOSI, EVENTOUT, USART1_RTS/USART1_DE and COMP2_OUT. |
| 23 | PA13 | bidirectional | 5 V tolerant (FT) I/O with alternate function SWDIO (serial wire debug data). |
| 24 | PA14 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SWCLK (serial wire debug clock) and USART2_TX. |
| 25 | PA15 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1. |
| 26 | PB3 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_SCK, TIM2_CH2 and EVENTOUT, and additional function COMP2_INN. |
| 27 | PB4 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MISO, EVENTOUT and TIM22_CH1, and additional function COMP2_INP. |
| 28 | PB5 | bidirectional | 5 V tolerant (FT) I/O with alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2, and additional function COMP2_INP. |
| 29 | PB6 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions USART1_TX, I2C1_SCL and LPTIM1_ETR, and additional function COMP2_INP. |
| 30 | PB7 | bidirectional | 5 V tolerant, FM+ capable (FTf) I/O with alternate functions USART1_RX, I2C1_SDA and LPTIM1_IN2, and additional functions COMP2_INP and PVD_IN. |
| 31 | BOOT0 | input | Dedicated BOOT0 pin used for boot mode selection. |
| 32 | VSS | power_in | Ground pin; all voltages are referenced to VSS. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-32(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 32 |
CAD (KiCad official)
- Symbol:
STM32L051K8T7 - Footprint:
Package_QFP:LQFP-32_7x7mm_P0.8mm - 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l051k8t7-etched.step/stm32l051k8t7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l051k8t7.step/stm32l051k8t7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (133 pp, sha256
232fdca5c41218a1, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(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).