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STM32L051C8T6TR
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(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
markdownSTM32L051C8T6TR
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32L051C8T6TR from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDD | power_in | Main power supply voltage (1.8 to 3.6 V with BOR enabled, or 1.65 to 3.6 V with BOR disabled) |
| 2 | PC13 | bidirectional | General-purpose I/O pin with 5V tolerant input, RTC tamper/timestamp/output and wakeup functions |
| 3 | PC14-OSC32_IN | input | External 32.768 kHz oscillator input pin (OSC32_IN) |
| 4 | PC15-OSC32_OUT | output | External 32.768 kHz oscillator output pin (OSC32_OUT) |
| 5 | PH0-OSC_IN | input | High-speed external oscillator input pin for 1-25 MHz crystal (OSC_IN) |
| 6 | PH1-OSC_OUT | output | High-speed external oscillator output pin for 1-25 MHz crystal (OSC_OUT) |
| 7 | NRST | bidirectional | Active-low system reset pin with embedded weak pull-up resistor and glitch filter |
| 8 | VSSA | power_in | Analog ground connection for ADC and reset blocks |
| 9 | VDDA | power_in | Analog power supply for ADC, comparators, and PLL (1.65 to 3.6 V) |
| 10 | PA0 | bidirectional | General-purpose I/O, TIM2_CH1/ETR, USART2_CTS, COMP1_OUT, or ADC_IN0 with RTC wakeup function |
| 11 | PA1 | bidirectional | General-purpose I/O with 5V tolerant input, TIM2_CH2, USART2_RTS/DE, TIM21_ETR, or COMP1_INP |
| 12 | PA2 | bidirectional | General-purpose I/O with 5V tolerant input, TIM21_CH1, TIM2_CH3, USART2_TX, COMP2_OUT, or ADC_IN2 |
| 13 | PA3 | bidirectional | General-purpose I/O with 5V tolerant input, TIM21_CH2, TIM2_CH4, USART2_RX, COMP2_INP, or ADC_IN3 |
| 14 | PA4 | bidirectional | General-purpose I/O, SPI1_NSS, USART2_CK, TIM22_ETR, COMP1_INM4, COMP2_INM4, or ADC_IN4 |
| 15 | PA5 | bidirectional | General-purpose I/O, SPI1_SCK, TIM2_ETR/CH1, COMP1_INM5, COMP2_INM5, or ADC_IN5 |
| 16 | PA6 | bidirectional | General-purpose I/O with 5V tolerant input, SPI1_MISO, LPUART1_CTS, TIM22_CH1, COMP1_OUT, or ADC_IN6 |
| 17 | PA7 | bidirectional | General-purpose I/O with 5V tolerant input, SPI1_MOSI, TIM22_CH2, COMP2_OUT, or ADC_IN7 |
| 18 | PB0 | bidirectional | General-purpose I/O with 5V tolerant input, EVENTOUT, VREF_OUT buffer, or ADC_IN8 |
| 19 | PB1 | bidirectional | General-purpose I/O with 5V tolerant input, LPUART1_RTS/DE, VREF_OUT buffer, or ADC_IN9 |
| 20 | PB2 | bidirectional | General-purpose I/O with 5V tolerant input, LPTIM1_OUT |
| 21 | PB10 | bidirectional | General-purpose I/O with 5V tolerant input, TIM2_CH3, LPUART1_TX, SPI2_SCK, or I2C2_SCL |
| 22 | PB11 | bidirectional | General-purpose I/O with 5V tolerant input, EVENTOUT, TIM2_CH4, LPUART1_RX, or I2C2_SDA |
| 23 | VSS | power_in | Ground connection for digital circuitry |
| 24 | VDD | power_in | Main power supply voltage (1.8 to 3.6 V with BOR enabled, or 1.65 to 3.6 V with BOR disabled) |
| 25 | PB12 | bidirectional | General-purpose I/O with 5V tolerant input, SPI2_NSS/I2S2_WS, LPUART1_RTS/DE, or EVENTOUT |
| 26 | PB13 | bidirectional | General-purpose I/O with 5V tolerant input (FM+ capable), SPI2_SCK/I2S2_CK, LPUART1_CTS, I2C2_SCL, or TIM21_CH1 |
| 27 | PB14 | bidirectional | General-purpose I/O with 5V tolerant input (FM+ capable), SPI2_MISO/I2S2_MCK, RTC_OUT, LPUART1_RTS/DE, I2C2_SDA, or TIM21_CH2 |
| 28 | PB15 | bidirectional | General-purpose I/O with 5V tolerant input, SPI2_MOSI/I2S2_SD or RTC_REFIN |
| 29 | PA8 | bidirectional | General-purpose I/O with 5V tolerant input, MCO output, EVENTOUT, or USART1_CK |
| 30 | PA9 | bidirectional | General-purpose I/O with 5V tolerant input, MCO output or USART1_TX |
| 31 | PA10 | bidirectional | General-purpose I/O with 5V tolerant input, USART1_RX |
| 32 | PA11 | bidirectional | General-purpose I/O with 5V tolerant input supplied by VDDIO2, SPI1_MISO, EVENTOUT, USART1_CTS, or COMP1_OUT |
| 33 | PA12 | bidirectional | General-purpose I/O with 5V tolerant input supplied by VDDIO2, SPI1_MOSI, EVENTOUT, USART1_RTS/DE, or COMP2_OUT |
| 34 | PA13 | bidirectional | General-purpose I/O with 5V tolerant input, Serial Wire Debug (SWDIO) interface pin |
| 35 | VSS | power_in | Ground connection for digital circuitry |
| 36 | VDDIO2 | power_in | Independent power supply for PA11 and PA12 I/O pins (1.65 to 3.6 V) |
| 37 | PA14 | bidirectional | General-purpose I/O with 5V tolerant input, Serial Wire Debug (SWCLK) interface, or USART2_TX |
| 38 | PA15 | bidirectional | General-purpose I/O with 5V tolerant input, SPI1_NSS, TIM2_ETR/CH1, EVENTOUT, or USART2_RX |
| 39 | PB3 | bidirectional | General-purpose I/O with 5V tolerant input, SPI1_SCK, TIM2_CH2, EVENTOUT, or COMP2_INN |
| 40 | PB4 | bidirectional | General-purpose I/O with 5V tolerant input, SPI1_MISO, EVENTOUT, TIM22_CH1, or COMP2_INP |
| 41 | PB5 | bidirectional | General-purpose I/O with 5V tolerant input, SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM22_CH2, or COMP2_INP |
| 42 | PB6 | bidirectional | General-purpose I/O with 5V tolerant input (FM+ capable), USART1_TX, I2C1_SCL, LPTIM1_ETR, or COMP2_INP |
| 43 | PB7 | bidirectional | General-purpose I/O with 5V tolerant input (FM+ capable), USART1_RX, I2C1_SDA, LPTIM1_IN2, COMP2_INP, or PVD_IN |
| 44 | BOOT0 | input | Boot mode selection pin for selecting boot from Flash, System memory, or RAM |
| 45 | PB8 | bidirectional | General-purpose I/O with 5V tolerant input (FM+ capable), I2C1_SCL |
| 46 | PB9 | bidirectional | General-purpose I/O with 5V tolerant input (FM+ capable), EVENTOUT, I2C1_SDA, or SPI2_NSS/I2S2_WS |
| 47 | VSS | power_in | Ground connection for digital circuitry |
| 48 | VDD | power_in | Main power supply voltage (1.8 to 3.6 V with BOR enabled, or 1.65 to 3.6 V with BOR disabled) |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32L051C8T6TR - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32l051c8t6tr-etched.step/stm32l051c8t6tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l051c8t6tr.step/stm32l051c8t6tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (133 pp, sha256
5bdb3fd58d9762b8, retrieved 2026-09-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).