component
STM32L051R8T7
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). 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
markdownSTM32L051R8T7
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)
STM32L051R8T7 from STMicroelectronics, in a LQFP-64(10x10). 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 power supply pin of the MCU. |
| 2 | PC13 | bidirectional | 5 V tolerant (FT) GPIO that also provides RTC_TAMP1, RTC_TS, RTC_OUT and WKUP2 functions. |
| 3 | PC14-OSC32_IN | bidirectional | 5 V tolerant (FT) GPIO that is also the OSC32_IN input of the 32 kHz low-speed oscillator. |
| 4 | PC15-OSC32_OUT (PC15) | bidirectional | Standard 3.3 V (TC) GPIO that is also the OSC32_OUT output of the 32 kHz low-speed oscillator. |
| 5 | PH0-OSC_IN | bidirectional | Standard 3.3 V (TC) GPIO that is also the OSC_IN input of the high-speed external oscillator. |
| 6 | PH1-OSC_OUT (PH1) | bidirectional | Standard 3.3 V (TC) GPIO that is also the OSC_OUT output of the high-speed external oscillator. |
| 7 | NRST | bidirectional | Bidirectional reset pin with an embedded weak pull-up resistor. |
| 8 | PC0 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions LPTIM1_IN1 and EVENTOUT and analog input ADC_IN10. |
| 9 | PC1 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions LPTIM1_OUT and EVENTOUT and analog input ADC_IN11. |
| 10 | PC2 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions LPTIM1_IN2 and SPI2_MISO/I2S2_MCK and analog input ADC_IN12. |
| 11 | PC3 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions LPTIM1_ETR and SPI2_MOSI/I2S2_SD and analog input ADC_IN13. |
| 12 | VSSA | power_in | Analog ground pin. |
| 13 | VDDA | power_in | Analog power supply pin. |
| 14 | PA0 | bidirectional | Standard 3.3 V (TC) GPIO with alternate functions TIM2_CH1, USART2_CTS, TIM2_ETR and COMP1_OUT, plus analog inputs COMP1_INM6, ADC_IN0 and RTC_TAMP2/WKUP1. |
| 15 | PA1 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions EVENTOUT, TIM2_CH2, USART2_RTS/USART2_DE and TIM21_ETR, plus analog inputs COMP1_INP and ADC_IN1. |
| 16 | PA2 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TIM21_CH1, TIM2_CH3, USART2_TX and COMP2_OUT, plus analog inputs COMP2_INM6 and ADC_IN2. |
| 17 | PA3 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TIM21_CH2, TIM2_CH4 and USART2_RX, plus analog inputs COMP2_INP and ADC_IN3. |
| 18 | VSS | power_in | Ground pin. |
| 19 | VDD | power_in | Digital power supply pin of the MCU. |
| 20 | PA4 | bidirectional | Standard 3.3 V (TC) GPIO with alternate functions SPI1_NSS, USART2_CK and TIM22_ETR, plus analog inputs COMP1_INM4, COMP2_INM4 and ADC_IN4. |
| 21 | PA5 | bidirectional | Standard 3.3 V (TC) GPIO with alternate functions SPI1_SCK, TIM2_ETR and TIM2_CH1, plus analog inputs COMP1_INM5, COMP2_INM5 and ADC_IN5. |
| 22 | PA6 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MISO, LPUART1_CTS, TIM22_CH1, EVENTOUT and COMP1_OUT, plus analog input ADC_IN6. |
| 23 | PA7 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MOSI, TIM22_CH2, EVENTOUT and COMP2_OUT, plus analog input ADC_IN7. |
| 24 | PC4 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions EVENTOUT and LPUART1_TX, plus analog input ADC_IN14. |
| 25 | PC5 | bidirectional | 5 V tolerant (FT) GPIO with alternate function LPUART1_RX, plus analog input ADC_IN15. |
| 26 | PB0 | bidirectional | 5 V tolerant (FT) GPIO with alternate function EVENTOUT, plus analog input ADC_IN8 and VREF_OUT. |
| 27 | PB1 | bidirectional | 5 V tolerant (FT) GPIO with alternate function LPUART1_RTS/LPUART1_DE, plus analog input ADC_IN9 and VREF_OUT. |
| 28 | PB2 | bidirectional | 5 V tolerant (FT) GPIO with alternate function LPTIM1_OUT. |
| 29 | PB10 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions TIM2_CH3, LPUART1_TX, SPI2_SCK and I2C2_SCL. |
| 30 | PB11 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions EVENTOUT, TIM2_CH4, LPUART1_RX and I2C2_SDA. |
| 31 | VSS | power_in | Ground pin. |
| 32 | VDD | power_in | Digital power supply pin of the MCU. |
| 33 | PB12 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI2_NSS/I2S2_WS, LPUART1_RTS/LPUART1_DE and EVENTOUT. |
| 34 | PB13 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions SPI2_SCK/I2S2_CK, LPUART1_CTS, I2C2_SCL and TIM21_CH1. |
| 35 | PB14 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions SPI2_MISO/I2S2_MCK, RTC_OUT, LPUART1_RTS/LPUART1_DE, I2C2_SDA and TIM21_CH2. |
| 36 | PB15 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI2_MOSI/I2S2_SD and RTC_REFIN. |
| 37 | PC6 | bidirectional | 5 V tolerant (FT) GPIO with alternate function TIM22_CH1. |
| 38 | PC7 | bidirectional | 5 V tolerant (FT) GPIO with alternate function TIM22_CH2. |
| 39 | PC8 | bidirectional | 5 V tolerant (FT) GPIO with alternate function TIM22_ETR. |
| 40 | PC9 | bidirectional | 5 V tolerant (FT) GPIO with alternate function TIM21_ETR. |
| 41 | PA8 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions MCO, EVENTOUT and USART1_CK. |
| 42 | PA9 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions MCO and USART1_TX. |
| 43 | PA10 | bidirectional | 5 V tolerant (FT) GPIO with alternate function USART1_RX. |
| 44 | PA11 | bidirectional | 5 V tolerant (FT) GPIO supplied by VDDIO2, with alternate functions SPI1_MISO, EVENTOUT, USART1_CTS and COMP1_OUT. |
| 45 | PA12 | bidirectional | 5 V tolerant (FT) GPIO supplied by VDDIO2, with alternate functions SPI1_MOSI, EVENTOUT, USART1_RTS/USART1_DE and COMP2_OUT. |
| 46 | PA13 | bidirectional | 5 V tolerant (FT) GPIO with alternate function SWDIO (serial wire debug data). |
| 47 | VSS | power_in | Ground pin. |
| 48 | VDDIO2 | power_in | I/O supply pin for PA11 and PA12, per the pin definitions note 2. |
| 49 | PA14 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SWCLK and USART2_TX. |
| 50 | PA15 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1. |
| 51 | PC10 | bidirectional | 5 V tolerant (FT) GPIO with alternate function LPUART1_TX. |
| 52 | PC11 | bidirectional | 5 V tolerant (FT) GPIO with alternate function LPUART1_RX. |
| 53 | PC12 | bidirectional | 5 V tolerant (FT) GPIO with no alternate function listed in Table 15. |
| 54 | PD2 | bidirectional | 5 V tolerant (FT) GPIO with alternate function LPUART1_RTS/LPUART1_DE. |
| 55 | PB3 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_SCK, TIM2_CH2 and EVENTOUT, plus analog comparator input COMP2_INN. |
| 56 | PB4 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MISO, EVENTOUT and TIM22_CH1, plus comparator input COMP2_INP. |
| 57 | PB5 | bidirectional | 5 V tolerant (FT) GPIO with alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2, plus comparator input COMP2_INP. |
| 58 | PB6 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions USART1_TX, I2C1_SCL and LPTIM1_ETR, plus comparator input COMP2_INP. |
| 59 | PB7 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions USART1_RX, I2C1_SDA and LPTIM1_IN2, plus comparator input COMP2_INP and PVD_IN. |
| 60 | BOOT0 | input | Dedicated BOOT0 boot-mode pin. |
| 61 | PB8 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate function I2C1_SCL. |
| 62 | PB9 | bidirectional | 5 V tolerant, FM+ capable (FTf) GPIO with alternate functions EVENTOUT, I2C1_SDA and SPI2_NSS/I2S2_WS. |
| 63 | VSS | power_in | Ground pin. |
| 64 | VDD | power_in | Digital power supply pin of the MCU. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-64(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 64 |
CAD (KiCad official)
- Symbol:
STM32L051R8T7 - Footprint:
Package_QFP:LQFP-64_10x10mm_P0.5mm - 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
stm32l051r8t7-etched.step/stm32l051r8t7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l051r8t7.step/stm32l051r8t7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (133 pp, sha256
232fdca5c41218a1, retrieved 2026-10-11, 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).