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STM32F334K6T7

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STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-32(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.

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STM32F334K6T7

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

STM32F334K6T7 from STMicroelectronics, in a LQFP-32(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 VDD power_in Digital power supply; the datasheet gives a VDD range of 2.0 to 3.6 V.
2 PF0 / OSC_IN bidirectional 5 V tolerant (FT) I/O, floating input after reset, also the OSC_IN input of the 4 to 32 MHz crystal oscillator; alternate function TIM1_CH3N.
3 PF1 / OSC_OUT bidirectional 5 V tolerant (FT) I/O, floating input after reset, also the OSC_OUT output of the 4 to 32 MHz crystal oscillator.
4 NRST bidirectional Active-low device reset input and internal reset output, with an embedded weak pull-up resistor (RST structure).
5 VDDA/VREF+ power_in Analog power supply and positive reference voltage; the datasheet gives a separate analog supply range of 2.0 to 3.6 V for the ADC.
6 PA0 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC (fast channel ADC1_IN1); alternate functions include TIM2_CH1/TIM2_ETR, TSC_G1_IO1 and USART2_CTS, and it also provides RTC_TAMP2/WKUP1.
7 PA1 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC (fast channel ADC1_IN2) and RTC_REFIN; alternate functions include TIM2_CH2, TSC_G1_IO2, USART2_RTS_DE and TIM15_CH1N.
8 PA2 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC (fast channel ADC1_IN3) and COMP2_INM; alternate functions include TIM2_CH3, TSC_G1_IO3, USART2_TX, COMP2_OUT and TIM15_CH1.
9 PA3 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC (fast channel ADC1_IN4); alternate functions include TIM2_CH4, TSC_G1_IO4, USART2_RX and TIM15_CH2.
10 PA4 bidirectional 3.3 V tolerant TTa I/O with ADC2_IN1 and DAC1_OUT1; it has reduced touch-sensing sensitivity and is recommended for use as a sampling capacitor I/O; alternate functions include TIM3_CH2, TSC_G2_IO1, SPI1_NSS and USART2_CK.
11 PA5 bidirectional 3.3 V tolerant TTa I/O with ADC2_IN2, DAC1_OUT2 and OPAMP2_VINM; it has reduced touch-sensing sensitivity and is recommended for use as a sampling capacitor I/O; alternate functions include TIM2_CH1/TIM2_ETR, TSC_G2_IO2 and SPI1_SCK.
12 PA6 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC with ADC2_IN3, DAC2_OUT1 and OPAMP2_VOUT; it has reduced touch-sensing sensitivity and is recommended for use as a sampling capacitor I/O; alternate functions include TIM16_CH1, TIM3_CH1, TSC_G2_IO3, SPI1_MISO, TIM1_BKIN and OPAMP2_DIG.
13 PA7 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC (ADC2_IN4) with COMP2_INP and OPAMP2_VINP; alternate functions include TIM17_CH1, TIM3_CH2, TSC_G2_IO4, SPI1_MOSI and TIM1_CH1N.
14 PB0 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC (ADC1_IN11) with COMP4_INP and OPAMP2_VINP; alternate functions include TIM3_CH3, TSC_G3_IO2 and TIM1_CH2N.
15 PB1 bidirectional 3.3 V tolerant TTa I/O directly connected to the ADC (ADC1_IN12); alternate functions include TIM3_CH4, TSC_G3_IO3, TIM1_CH3N, COMP4_OUT and HRTIM1_SCOUT.
16 VSS power_in Digital ground.
17 VDD power_in Digital power supply; the datasheet gives a VDD range of 2.0 to 3.6 V.
18 PA8 bidirectional 5 V tolerant (FT) I/O; alternate functions include MCO, TIM1_CH1, USART1_CK and HRTIM1_CHA1.
19 PA9 bidirectional 5 V tolerant (FT) I/O; alternate functions include TSC_G4_IO1, TIM1_CH2, USART1_TX, TIM15_BKIN, TIM2_CH3 and HRTIM1_CHA2.
20 PA10 bidirectional 5 V tolerant (FT) I/O; alternate functions include TIM17_BKIN, TSC_G4_IO2, TIM1_CH3, USART1_RX, COMP6_OUT, TIM2_CH4 and HRTIM1_CHB1.
21 PA11 bidirectional 5 V tolerant (FT) I/O; alternate functions include TIM1_CH1N, USART1_CTS, CAN_RX, TIM1_CH4, TIM1_BKIN2 and HRTIM1_CHB2.
22 PA12 bidirectional 5 V tolerant (FT) I/O; alternate functions include TIM16_CH1, TIM1_CH2N, USART1_RTS_DE, COMP2_OUT, CAN_TX, TIM1_ETR and HRTIM1_FLT1.
23 PA13 bidirectional 5 V tolerant (FT) I/O; alternate functions include JTMS/SWDAT (SWD data), TIM16_CH1N, TSC_G4_IO3, IR_OUT and USART3_CTS.
24 PA14 bidirectional 5 V tolerant, FM+ capable (FTf) I/O; alternate functions include JTCK/SWCLK (SWD clock), TSC_G4_IO4, I2C1_SDA, TIM1_BKIN and USART2_TX.
25 PA15 bidirectional 5 V tolerant, FM+ capable (FTf) I/O; alternate functions include JTDI, TIM2_CH1/TIM2_ETR, TSC_SYNC, I2C1_SCL, SPI1_NSS, USART2_RX, TIM1_BKIN and HRTIM1_FLT2.
26 PB3 bidirectional 5 V tolerant (FT) I/O; alternate functions include JTDO/TRACE SWO, TIM2_CH2, TSC_G5_IO1, SPI1_SCK, USART2_TX, TIM3_ETR and HRTIM1_EEV9.
27 PB4 bidirectional 5 V tolerant (FT) I/O; alternate functions include NJTRST, TIM16_CH1, TIM3_CH1, TSC_G5_IO2, SPI1_MISO, USART2_RX, TIM17_BKIN and HRTIM1_EEV7.
28 PB5 bidirectional 5 V tolerant (FT) I/O; alternate functions include TIM16_BKIN, TIM3_CH2, I2C1_SMBA, SPI1_MOSI, USART2_CK, TIM17_CH1 and HRTIM1_EEV6.
29 PB6 bidirectional 5 V tolerant, FM+ capable (FTf) I/O; alternate functions include TIM16_CH1N, TSC_G5_IO3, I2C1_SCL, USART1_TX, HRTIM1_SCIN and HRTIM1_EEV4.
30 PB7 bidirectional 5 V tolerant, FM+ capable (FTf) I/O; alternate functions include TIM17_CH1N, TSC_G5_IO4, I2C1_SDA, USART1_RX, TIM3_CH4 and HRTIM1_EEV3.
31 BOOT0 input Dedicated BOOT0 pin (structure B) used for boot mode selection.
32 VSS power_in Digital ground.

Key specifications

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

CAD (KiCad official)

  • Symbol: STM32F334K6T7
  • Footprint: Package_QFP:LQFP-32_7x7mm_P0.8mm
  • 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm32f334k6t7-etched.step / stm32f334k6t7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f334k6t7.step / stm32f334k6t7.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (125 pp, sha256 4727fd8b6c87c9e0, retrieved 2026-10-11, 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