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STM32G051C8T6

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STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.

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STM32G051C8T6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

STM32G051C8T6 from STMicroelectronics, in a LQFP-48(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 PC13 bidirectional 5 V-tolerant (FT) I/O supplied through the RTC power switch, which sinks only 3 mA, so output use is limited to 2 MHz at 30 pF and it must not source current such as an LED.
2 PC14-OSC32_IN bidirectional 5 V-tolerant (FT) I/O on the RTC power switch with the same 3 mA, 2 MHz / 30 pF output limits as PC13, and alternate function OSC32_IN for the 32.768 kHz LSE crystal input.
3 PC15-OSC32_OUT bidirectional 5 V-tolerant (FT) I/O on the RTC power switch with the same output limits as PC13, and OSC32_OUT as the LSE 32.768 kHz crystal output.
4 VBAT power_in Power supply for the RTC, TAMP, the 32.768 kHz oscillator and backup registers when VDD is not present, specified at 1.55 V to 3.6 V.
5 VREF+ power_in Analog peripheral reference voltage input, or the output of the internal voltage reference buffer when enabled; when VDDA < 2 V it must equal VDDA, and when VDDA ≥ 2 V it must be between 2 V and VDDA.
6 VDD/VDDA power_in Main supply for the internal regulator, I/Os and analog blocks, specified at 1.7 V to 3.6 V (VDDA minimum 1.62 V for ADC and COMP).
7 VSS/VSSA power_in Ground reference for digital and analog circuits.
8 PF0-OSC_IN bidirectional 5 V-tolerant (FT) I/O with alternate function TIM14_CH1 and OSC_IN as the HSE crystal input.
9 PF1-OSC_OUT bidirectional 5 V-tolerant (FT) I/O with OSC_OUT as the HSE crystal output and alternate functions OSC_EN and TIM15_CH1N.
10 PF2-NRST bidirectional Bidirectional reset pin with embedded weak pull-up whose default function is NRST; when used in this mode, other I/Os connected to it must be configured with care.
11 PA0 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function, also ADC_IN0, COMP1_INM8 and wakeup pin WKUP1.
12 PA1 bidirectional 5 V-tolerant (FT_ea) I/O with analog switch function and switchable diode to VDD, also ADC_IN1 and COMP1_INP2.
13 PA2 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function, also ADC_IN2, COMP2_INM8, wakeup pin WKUP4 and LSCO output.
14 PA3 bidirectional 5 V-tolerant (FT_ea) I/O with analog switch function and switchable diode to VDD, also ADC_IN3 and COMP2_INP2.
15 PA4 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function, also ADC_IN4, DAC1_OUT1 analog output and RTC_OUT2.
16 PA5 bidirectional 5 V-tolerant (FT_ea) I/O with analog switch function and switchable diode to VDD, also ADC_IN5 and DAC1_OUT2 analog output.
17 PA6 bidirectional 5 V-tolerant (FT_ea) I/O with analog switch function and switchable diode to VDD, also ADC_IN6 and alternate function COMP1_OUT.
18 PA7 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function, also ADC_IN7 and alternate function COMP2_OUT.
19 PB0 bidirectional 5 V-tolerant (FT_ea) I/O with analog switch function and switchable diode to VDD, also ADC_IN8 and alternate function COMP1_OUT.
20 PB1 bidirectional 5 V-tolerant (FT_ea) I/O with analog switch function and switchable diode to VDD, also ADC_IN9 and COMP1_INM6.
21 PB2 bidirectional 5 V-tolerant (FT_ea) I/O with analog switch function and switchable diode to VDD, also ADC_IN10 and COMP1_INP1.
22 PB10 bidirectional 5 V-tolerant (FT_fa) I/O, Fm+ capable and with analog switch function, also ADC_IN11 and alternate function COMP1_OUT.
23 PB11 bidirectional 5 V-tolerant (FT_fa) I/O, Fm+ capable and with analog switch function, also ADC_IN15 and alternate function COMP2_OUT.
24 PB12 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function, also ADC_IN16 and alternate functions SPI2_NSS, LPUART1_RTS_DE and TIM1_BKIN.
25 PB13 bidirectional 5 V-tolerant (FT_f) I/O, Fm+ capable, with alternate functions SPI2_SCK, LPUART1_CTS, TIM1_CH1N and I2C2_SCL.
26 PB14 bidirectional 5 V-tolerant (FT_f) I/O, Fm+ capable, with alternate functions SPI2_MISO, TIM1_CH2N, TIM15_CH1 and I2C2_SDA.
27 PB15 bidirectional 5 V-tolerant (FT) I/O with alternate functions SPI2_MOSI, TIM1_CH3N, TIM15_CH1N and TIM15_CH2, and additional function RTC_REFIN.
28 PA8 bidirectional 5 V-tolerant (FT) I/O with alternate functions MCO, SPI2_NSS, TIM1_CH1, LPTIM2_OUT and EVENTOUT.
29 PA9 bidirectional 5 V-tolerant (FT_f) I/O, Fm+ capable, with alternate functions MCO, USART1_TX, TIM1_CH2, SPI2_MISO and I2C1_SCL; it can be remapped in place of PA11 via SYSCFG_CFGR1.
30 PC6 bidirectional 5 V-tolerant (FT) I/O with alternate functions TIM3_CH1 and TIM2_CH3.
31 PC7 bidirectional 5 V-tolerant (FT) I/O with alternate functions TIM3_CH2 and TIM2_CH4.
32 PA10 bidirectional 5 V-tolerant (FT_f) I/O, Fm+ capable, with alternate functions SPI2_MOSI, USART1_RX, TIM1_CH3, TIM17_BKIN and I2C1_SDA; it can be remapped in place of PA12 via SYSCFG_CFGR1.
33 PA11 [PA9] bidirectional 5 V-tolerant (FT_fa) I/O, Fm+ capable, with analog switch function, also ADC_IN15 and alternate functions USART1_CTS, TIM1_CH4, TIM1_BKIN2, I2C2_SCL and COMP1_OUT.
34 PA12 [PA10] bidirectional 5 V-tolerant (FT_fa) I/O, Fm+ capable, with analog switch function, also ADC_IN16 and alternate functions USART1_RTS_DE_CK, TIM1_ETR, I2S_CKIN, I2C2_SDA and COMP2_OUT.
35 PA13 bidirectional 5 V-tolerant (FT_ea) I/O with switchable diode to VDD; it is configured as SWDIO after reset with the internal pull-up active, also ADC_IN17 and IR_OUT.
36 PA14-BOOT0 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function; after reset it is SWCLK with the internal pull-down active, and it also carries the BOOT0 boot-mode pin and ADC_IN18.
37 PA15 bidirectional 5 V-tolerant (FT) I/O with alternate functions SPI1_NSS/I2S1_WS, USART2_RX, TIM2_CH1_ETR and EVENTOUT.
38 PD0 bidirectional 5 V-tolerant (FT) I/O with alternate functions EVENTOUT, SPI2_NSS and TIM16_CH1.
39 PD1 bidirectional 5 V-tolerant (FT) I/O with alternate functions EVENTOUT, SPI2_SCK and TIM17_CH1.
40 PD2 bidirectional 5 V-tolerant (FT) I/O with alternate functions TIM3_ETR and TIM1_CH1N.
41 PD3 bidirectional 5 V-tolerant (FT) I/O with alternate functions USART2_CTS, SPI2_MISO and TIM1_CH2N.
42 PB3 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function, with alternate functions SPI1_SCK/I2S1_CK, TIM1_CH2, TIM2_CH2 and USART1_RTS_DE_CK, and COMP2_INM6 additional function.
43 PB4 bidirectional 5 V-tolerant (FT_a) I/O with analog switch function, with alternate functions SPI1_MISO/I2S1_MCK, TIM3_CH1, USART1_CTS and TIM17_BKIN, and COMP2_INP0 additional function.
44 PB5 bidirectional 5 V-tolerant (FT) I/O with alternate functions SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM16_BKIN, LPTIM1_IN1, I2C1_SMBA and COMP2_OUT, and wakeup pin WKUP6.
45 PB6 bidirectional 5 V-tolerant (FT_fa) I/O, Fm+ capable, with analog switch function, with alternate functions USART1_TX, TIM1_CH3, TIM16_CH1N, SPI2_MISO, LPTIM1_ETR and I2C1_SCL, and COMP2_INP1 additional function.
46 PB7 bidirectional 5 V-tolerant (FT_fa) I/O, Fm+ capable, with analog switch function, also ADC_IN11, COMP2_INM7 and PVD_IN, with alternate functions USART1_RX, SPI2_MOSI, TIM17_CH1N, LPTIM1_IN2 and I2C1_SDA.
47 PB8 bidirectional 5 V-tolerant (FT_f) I/O, Fm+ capable, with alternate functions SPI2_SCK, TIM16_CH1, TIM15_BKIN and I2C1_SCL.
48 PB9 bidirectional 5 V-tolerant (FT_f) I/O, Fm+ capable, with alternate functions IR_OUT, TIM17_CH1, SPI2_NSS and I2C1_SDA.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-48(7x7)
Category Embedded Processors & Controllers
Pins 48

CAD (KiCad official)

  • Symbol: STM32G051C8T6
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm32g051c8t6-etched.step / stm32g051c8t6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32g051c8t6.step / stm32g051c8t6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (126 pp, sha256 773ba84c25c7d2f3, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF