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Contents

README

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STM32F051K6T6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · QFP-32(7x7)

STM32F051K6T6 from STMicroelectronics, in a QFP-32(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 Digital power supply input pin; VDD (=VDDIO1) operating range is 2.0 V to 3.6 V and must be decoupled per the recommended power-supply scheme.
2 PF0-OSC_IN bidirectional Port F GPIO0, 5V-tolerant (FT) I/O, floating input by default after reset; additional function OSC_IN, the external 4-32 MHz oscillator input.
3 PF1-OSC_OUT bidirectional Port F GPIO1, 5V-tolerant (FT) I/O, floating input by default after reset; additional function OSC_OUT, the external high-speed oscillator output.
4 NRST bidirectional Bidirectional reset pin with an embedded weak pull-up resistor; device reset input / internal reset output, active low.
5 VDDA power_in Analog power supply pin for ADC, DAC, reset blocks, RCs and PLL; must be from VDD to 3.6 V, with a minimum of 2.4 V when the ADC or DAC is used.
6 PA0 bidirectional Port A GPIO0, ADC-capable 3.3V (TTa) I/O; alternate functions USART2_CTS, TIM2_CH1_ETR, COMP1_OUT, TSC_G1_IO1; additional functions ADC_IN0, COMP1_INM6, RTC_TAMP2, WKUP1 (wakeup from Standby).
7 PA1 bidirectional Port A GPIO1, TTa I/O; alternate functions USART2_RTS, TIM2_CH2, TSC_G1_IO2, EVENTOUT; additional functions ADC_IN1, COMP1_INP.
8 PA2 bidirectional Port A GPIO2, TTa I/O; alternate functions USART2_TX, TIM2_CH3, TIM15_CH1, COMP2_OUT, TSC_G1_IO3; additional functions ADC_IN2, COMP2_INM6.
9 PA3 bidirectional Port A GPIO3, TTa I/O; alternate functions USART2_RX, TIM2_CH4, TIM15_CH2, TSC_G1_IO4; additional functions ADC_IN3, COMP2_INP.
10 PA4 bidirectional Port A GPIO4, TTa I/O; alternate functions SPI1_NSS, I2S1_WS, USART2_CK, TIM14_CH1, TSC_G2_IO1; additional functions ADC_IN4, COMP1_INM4, COMP2_INM4, DAC_OUT1.
11 PA5 bidirectional Port A GPIO5, TTa I/O; alternate functions SPI1_SCK, I2S1_CK, CEC, TIM2_CH1_ETR, TSC_G2_IO2; additional functions ADC_IN5, COMP1_INM5, COMP2_INM5.
12 PA6 bidirectional Port A GPIO6, TTa I/O; alternate functions SPI1_MISO, I2S1_MCK, TIM3_CH1, TIM1_BKIN, TIM16_CH1, COMP1_OUT, TSC_G2_IO3, EVENTOUT; additional function ADC_IN6.
13 PA7 bidirectional Port A GPIO7, TTa I/O; alternate functions SPI1_MOSI, I2S1_SD, TIM3_CH2, TIM14_CH1, TIM1_CH1N, TIM17_CH1, COMP2_OUT, TSC_G2_IO4, EVENTOUT; additional function ADC_IN7.
14 PB0 bidirectional Port B GPIO0, TTa I/O; alternate functions TIM3_CH3, TIM1_CH2N, TSC_G3_IO2, EVENTOUT; additional function ADC_IN8.
15 PB1 bidirectional Port B GPIO1, TTa I/O; alternate functions TIM3_CH4, TIM14_CH1, TIM1_CH3N, TSC_G3_IO3; additional function ADC_IN9.
16 VSS power_in Ground pin; on the LQFP32 package this pin also carries the VSSA analog ground since a distinct VSSA pin is only available on packages with 48 pins or more (VSSA pad connected internally to this VSS pin).
17 VDD power_in Digital power supply input pin; VDD operating range is 2.0 V to 3.6 V.
18 PA8 bidirectional Port A GPIO8, 5V-tolerant (FT) I/O; alternate functions USART1_CK, TIM1_CH1, EVENTOUT, MCO.
19 PA9 bidirectional Port A GPIO9, FT I/O; alternate functions USART1_TX, TIM1_CH2, TIM15_BKIN, TSC_G4_IO1.
20 PA10 bidirectional Port A GPIO10, FT I/O; alternate functions USART1_RX, TIM1_CH3, TIM17_BKIN, TSC_G4_IO2.
21 PA11 bidirectional Port A GPIO11, FT I/O; alternate functions USART1_CTS, TIM1_CH4, COMP1_OUT, TSC_G4_IO3, EVENTOUT.
22 PA12 bidirectional Port A GPIO12, FT I/O; alternate functions USART1_RTS, TIM1_ETR, COMP2_OUT, TSC_G4_IO4, EVENTOUT.
23 PA13 bidirectional Port A GPIO13; after reset configured as SWDIO alternate function with internal pull-up activated, FT I/O; also usable as IR_OUT.
24 PA14 bidirectional Port A GPIO14; after reset configured as SWCLK alternate function with internal pull-down activated, FT I/O; also usable as USART2_TX.
25 PA15 bidirectional Port A GPIO15, FT I/O; alternate functions SPI1_NSS, I2S1_WS, USART2_RX, TIM2_CH1_ETR, EVENTOUT.
26 PB3 bidirectional Port B GPIO3, FT I/O; alternate functions SPI1_SCK, I2S1_CK, TIM2_CH2, TSC_G5_IO1, EVENTOUT.
27 PB4 bidirectional Port B GPIO4, FT I/O; alternate functions SPI1_MISO, I2S1_MCK, TIM3_CH1, TSC_G5_IO2, EVENTOUT.
28 PB5 bidirectional Port B GPIO5, FT I/O; alternate functions SPI1_MOSI, I2S1_SD, I2C1_SMBA, TIM16_BKIN, TIM3_CH2.
29 PB6 bidirectional Port B GPIO6, 5V-tolerant Fast-Mode-Plus capable (FTf) I/O; alternate functions I2C1_SCL, USART1_TX, TIM16_CH1N, TSC_G5_IO3.
30 PB7 bidirectional Port B GPIO7, FTf I/O; alternate functions I2C1_SDA, USART1_RX, TIM17_CH1N, TSC_G5_IO4.
31 BOOT0 input Dedicated boot-mode selection input pin sampled at reset to choose the boot source (Flash, System memory, or SRAM); input voltage range 0 to 9.0 V absolute maximum (0 to 5.5 V operating).
32 VSS power_in Ground pin.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package QFP-32(7x7)
Category Embedded Processors & Controllers
Pins 32

CAD (KiCad official)

  • Symbol: STM32F051K6T6
  • Footprint: Package_QFP:LQFP-32_7x7mm_P0.8mm
  • 3D model: QFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm32f051k6t6-etched.step / stm32f051k6t6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f051k6t6.step / stm32f051k6t6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (122 pp, sha256 80848a22804e56d8, retrieved 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-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).

Datasheet PDF