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stm32f051c8t6tr

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by Ray

STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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STM32F051C8T6TR

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

STM32F051C8T6TR 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 VBAT power_in Backup power supply for the RTC domain and backup registers. Typically 1.65 V to 3.6 V; connect to VDD if backup domain is not used.
2 PC13 bidirectional GPIO Port C bit 13 (TC I/O), also RTC_TAMP1 / RTC_TS / RTC_OUT / WKUP2 additional functions. Supplied through the RTC power switch (limited to 3 mA sink; max 2 MHz output speed with 30 pF load; not usable to source LED current).
3 PC14-OSC32_IN bidirectional GPIO Port C bit 14 (TC I/O) with additional OSC32_IN function for the 32.768 kHz LSE crystal oscillator input. Same RTC-power-switch drive limits as PC13.
4 PC15-OSC32_OUT bidirectional GPIO Port C bit 15 (TC I/O) with additional OSC32_OUT function for the 32.768 kHz LSE crystal oscillator output. Same RTC-power-switch drive limits as PC13.
5 PF0-OSC_IN bidirectional GPIO Port F bit 0 (FT I/O) with additional OSC_IN function for the 4-32 MHz HSE crystal oscillator input. 5 V tolerant when used as GPIO.
6 PF1-OSC_OUT bidirectional GPIO Port F bit 1 (FT I/O) with additional OSC_OUT function for the 4-32 MHz HSE crystal oscillator output. 5 V tolerant when used as GPIO.
7 NRST bidirectional Bidirectional device reset (active low). Internal weak pull-up (~40 kΩ) allows the pin to be driven by an open-drain external source or left as an output-driven reset indicator during internal reset.
8 VSSA power_in Analog ground reference for VDDA, ADC, DAC, comparators and internal reference. Tie to the board analog ground plane.
9 VDDA power_in Analog power supply for ADC, DAC, reset block, RCs and PLL. Range: VDD to 3.6 V (minimum 2.4 V for ADC operation).
10 PA0 bidirectional GPIO Port A bit 0 (TTa I/O, 3.3 V tolerant, connected to ADC). Alt functions: USART2_CTS, TIM2_CH1_ETR, COMP1_OUT, TSC_G1_IO1. Additional: ADC_IN0, COMP1_INM6, RTC_TAMP2, WKUP1.
11 PA1 bidirectional GPIO Port A bit 1 (TTa I/O, 3.3 V tolerant, connected to ADC). Alt functions: USART2_RTS, TIM2_CH2, TSC_G1_IO2, EVENTOUT. Additional: ADC_IN1, COMP1_INP.
12 PA2 bidirectional GPIO Port A bit 2 (TTa I/O). Alt functions: USART2_TX, TIM2_CH3, TIM15_CH1, COMP2_OUT, TSC_G1_IO3. Additional: ADC_IN2, COMP2_INM6.
13 PA3 bidirectional GPIO Port A bit 3 (TTa I/O). Alt functions: USART2_RX, TIM2_CH4, TIM15_CH2, TSC_G1_IO4. Additional: ADC_IN3, COMP2_INP.
14 PA4 bidirectional GPIO Port A bit 4 (TTa I/O). Alt functions: SPI1_NSS, I2S1_WS, USART2_CK, TIM14_CH1, TSC_G2_IO1. Additional: ADC_IN4, COMP1_INM4, COMP2_INM4, DAC_OUT1.
15 PA5 bidirectional GPIO Port A bit 5 (TTa I/O). Alt functions: SPI1_SCK, I2S1_CK, CEC, TIM2_CH1_ETR, TSC_G2_IO2. Additional: ADC_IN5, COMP1_INM5, COMP2_INM5.
16 PA6 bidirectional GPIO Port A bit 6 (TTa I/O). Alt functions: SPI1_MISO, I2S1_MCK, TIM3_CH1, TIM1_BKIN, TIM16_CH1, COMP1_OUT, TSC_G2_IO3, EVENTOUT. Additional: ADC_IN6.
17 PA7 bidirectional GPIO Port A bit 7 (TTa I/O). Alt functions: SPI1_MOSI, I2S1_SD, TIM3_CH2, TIM14_CH1, TIM1_CH1N, TIM17_CH1, COMP2_OUT, TSC_G2_IO4, EVENTOUT. Additional: ADC_IN7.
18 PB0 bidirectional GPIO Port B bit 0 (TTa I/O). Alt functions: TIM3_CH3, TIM1_CH2N, TSC_G3_IO2, EVENTOUT. Additional: ADC_IN8.
19 PB1 bidirectional GPIO Port B bit 1 (TTa I/O). Alt functions: TIM3_CH4, TIM14_CH1, TIM1_CH3N, TSC_G3_IO3. Additional: ADC_IN9.
20 PB2 bidirectional GPIO Port B bit 2 (FT I/O, 5 V tolerant). Alt function: TSC_G3_IO4.
21 PB10 bidirectional GPIO Port B bit 10 (FT I/O, 5 V tolerant). Alt functions: I2C2_SCL, CEC, TIM2_CH3, TSC_SYNC.
22 PB11 bidirectional GPIO Port B bit 11 (FT I/O, 5 V tolerant). Alt functions: I2C2_SDA, TIM2_CH4, TSC_G6_IO1, EVENTOUT.
23 VSS power_in Digital ground return for VDD. Tie to the board ground plane.
24 VDD power_in Digital power supply (I/O and internal regulator input). Range: 2.0 V to 3.6 V; decouple with a 100 nF ceramic per VDD pin plus a bulk cap.
25 PB12 bidirectional GPIO Port B bit 12 (FT I/O, 5 V tolerant). Alt functions: SPI2_NSS, TIM1_BKIN, TSC_G6_IO2, EVENTOUT.
26 PB13 bidirectional GPIO Port B bit 13 (FT I/O, 5 V tolerant). Alt functions: SPI2_SCK, TIM1_CH1N, TSC_G6_IO3.
27 PB14 bidirectional GPIO Port B bit 14 (FT I/O, 5 V tolerant). Alt functions: SPI2_MISO, TIM1_CH2N, TIM15_CH1, TSC_G6_IO4.
28 PB15 bidirectional GPIO Port B bit 15 (FT I/O, 5 V tolerant). Alt functions: SPI2_MOSI, TIM1_CH3N, TIM15_CH1N, TIM15_CH2. Additional: RTC_REFIN.
29 PA8 bidirectional GPIO Port A bit 8 (FT I/O, 5 V tolerant). Alt functions: USART1_CK, TIM1_CH1, EVENTOUT, MCO.
30 PA9 bidirectional GPIO Port A bit 9 (FT I/O, 5 V tolerant). Alt functions: USART1_TX, TIM1_CH2, TIM15_BKIN, TSC_G4_IO1.
31 PA10 bidirectional GPIO Port A bit 10 (FT I/O, 5 V tolerant). Alt functions: USART1_RX, TIM1_CH3, TIM17_BKIN, TSC_G4_IO2.
32 PA11 bidirectional GPIO Port A bit 11 (FT I/O, 5 V tolerant). Alt functions: USART1_CTS, TIM1_CH4, COMP1_OUT, TSC_G4_IO3, EVENTOUT.
33 PA12 bidirectional GPIO Port A bit 12 (FT I/O, 5 V tolerant). Alt functions: USART1_RTS, TIM1_ETR, COMP2_OUT, TSC_G4_IO4, EVENTOUT.
34 PA13 bidirectional GPIO Port A bit 13 (FT I/O, 5 V tolerant); default SWDIO after reset with internal pull-up enabled. Alt functions: IR_OUT, SWDIO.
35 PF6 bidirectional GPIO Port F bit 6 (FT I/O, 5 V tolerant). Alt function: I2C2_SCL.
36 PF7 bidirectional GPIO Port F bit 7 (FT I/O, 5 V tolerant). Alt function: I2C2_SDA.
37 PA14 bidirectional GPIO Port A bit 14 (FT I/O, 5 V tolerant); default SWCLK after reset with internal pull-down enabled. Alt functions: USART2_TX, SWCLK.
38 PA15 bidirectional GPIO Port A bit 15 (FT I/O, 5 V tolerant). Alt functions: SPI1_NSS, I2S1_WS, USART2_RX, TIM2_CH1_ETR, EVENTOUT.
39 PB3 bidirectional GPIO Port B bit 3 (FT I/O, 5 V tolerant). Alt functions: SPI1_SCK, I2S1_CK, TIM2_CH2, TSC_G5_IO1, EVENTOUT.
40 PB4 bidirectional GPIO Port B bit 4 (FT I/O, 5 V tolerant). Alt functions: SPI1_MISO, I2S1_MCK, TIM3_CH1, TSC_G5_IO2, EVENTOUT.
41 PB5 bidirectional GPIO Port B bit 5 (FT I/O, 5 V tolerant). Alt functions: SPI1_MOSI, I2S1_SD, I2C1_SMBA, TIM16_BKIN, TIM3_CH2.
42 PB6 bidirectional GPIO Port B bit 6 (FTf I/O, 5 V tolerant, Fast Mode Plus capable). Alt functions: I2C1_SCL, USART1_TX, TIM16_CH1N, TSC_G5_IO3.
43 PB7 bidirectional GPIO Port B bit 7 (FTf I/O, 5 V tolerant, Fast Mode Plus capable). Alt functions: I2C1_SDA, USART1_RX, TIM17_CH1N, TSC_G5_IO4.
44 BOOT0 input Boot memory selection input sampled at reset (dedicated BOOT0 pin, type B). Logic level chooses main flash, system memory (bootloader) or embedded SRAM as the boot source in combination with the nBOOT1 option bit.
45 PB8 bidirectional GPIO Port B bit 8 (FTf I/O, 5 V tolerant, Fast Mode Plus capable). Alt functions: I2C1_SCL, CEC, TIM16_CH1, TSC_SYNC.
46 PB9 bidirectional GPIO Port B bit 9 (FTf I/O, 5 V tolerant, Fast Mode Plus capable). Alt functions: I2C1_SDA, IR_OUT, TIM17_CH1, EVENTOUT.
47 VSS power_in Digital ground return for VDD (second VSS pin). Tie to the board ground plane.
48 VDD power_in Digital power supply (second VDD pin). Range: 2.0 V to 3.6 V; decouple with a 100 nF ceramic per VDD pin plus a bulk cap.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-48(7x7)
Category MCU
Pins 48

Ordering variants

  • STM32F051C8T6TR
  • STM32F051C8T6TRC8T7
  • STM32F051C8T6TRC8T7TR
  • STM32F051C8T6TRC6T6
  • STM32F051C8T6TRC6T6TR
  • STM32F051C8T6TRC4T6
  • STM32F051C8T6TRC4T6TR
  • STM32F051C8T6TRC8U6
  • STM32F051C8T6TRC8U6TR
  • STM32F051C8T6TRC6U6
  • STM32F051C8T6TRC6U6TR
  • STM32F051C8T6TRC4U6
  • STM32F051C8T6TRC4U6TR
  • STM32F051C8T6TRR8T6
  • STM32F051C8T6TRR8T6TR
  • STM32F051C8T6TRR8T7
  • STM32F051C8T6TRR8T7TR
  • STM32F051C8T6TRR6T6
  • STM32F051C8T6TRR6T6TR
  • STM32F051C8T6TRR4T6
  • STM32F051C8T6TRR4T6TR
  • STM32F051C8T6TRR8H6
  • STM32F051C8T6TRR8H6TR
  • STM32F051C8T6TRR6H6
  • STM32F051C8T6TRR6H6TR
  • STM32F051C8T6TRR4H6
  • STM32F051C8T6TRR4H6TR
  • STM32F051C8T6TRK8T6
  • STM32F051C8T6TRK8T6TR
  • STM32F051C8T6TRK6T6
  • STM32F051C8T6TRK6T6TR
  • STM32F051C8T6TRK4T6
  • STM32F051C8T6TRK4T6TR
  • STM32F051C8T6TRK8U6
  • STM32F051C8T6TRK8U6TR
  • STM32F051C8T6TRK6U6
  • STM32F051C8T6TRK6U6TR
  • STM32F051C8T6TRK4U6
  • STM32F051C8T6TRK4U6TR
  • STM32F051C8T6TRT8Y6
  • STM32F051C8T6TRT8Y6TR
  • STM32F051C8T6TRT6Y6
  • STM32F051C8T6TRT6Y6TR
  • STM32F051C8T6TRT4Y6
  • STM32F051C8T6TRT4Y6TR

CAD (KiCad official)

  • Symbol: STM32F051C8T6TR
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (None pp, sha256 80848a22804e56d8, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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