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STM32F334K8T6

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

componentembedded processors & controllersstm32f334k8t6factory-2.0.0extractor-text
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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STM32F334K8T6

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

STM32F334K8T6 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_out Digital power supply from 2.0 to 3.6 V for I/O pins and internal core regulator.
2 PF0 bidirectional 5V-tolerant I/O supporting OSC_IN external oscillator input or Timer1 CH3N alternate function.
3 PF1 bidirectional 5V-tolerant I/O supporting OSC_OUT external oscillator output.
4 NRST bidirectional Device reset input/output with active-low logic and embedded weak pull-up resistor.
5 VDDA power_in Analog power supply from 2.0 to 3.6 V (2.4 to 3.6 V when DAC/OPAMP used) and positive reference voltage for ADC, DAC, comparators, and OPAMP.
6 PA0 bidirectional 3.3V-tolerant I/O with ADC1 channel 1 input, supporting Timer2, TSC, USART2 CTS, and RTC functions.
7 PA1 bidirectional 3.3V-tolerant I/O with ADC1 channel 2 input, supporting Timer2/15, TSC, USART2 RTS, and RTC reference input.
8 PA2 bidirectional 3.3V-tolerant I/O with ADC1 channel 3 input, supporting Timer2/15, USART2 TX, and Comparator2 output.
9 PA3 bidirectional 3.3V-tolerant I/O with ADC1 channel 4 input, supporting Timer2/15 and USART2 RX.
10 PA4 bidirectional 3.3V-tolerant I/O with ADC2 channel 1 input, DAC1_OUT1, supporting Timer3, SPI1 NSS, USART2 CK, and Comparator functions.
11 PA5 bidirectional 3.3V-tolerant I/O with ADC2 channel 2 input, DAC1_OUT2, supporting Timer2/ETR, SPI1 SCK, and OPAMP2 negative input.
12 PA6 bidirectional 3.3V-tolerant I/O with ADC2 channel 3 input, DAC2_OUT1, OPAMP2 output, supporting Timer16/3, SPI1 MISO, and Timer1 brake input.
13 PA7 bidirectional 3.3V-tolerant I/O with ADC2 channel 4 input, supporting Timer17/3, SPI1 MOSI, Timer1 CH1N, and Comparator functions.
14 PB0 bidirectional 3.3V-tolerant I/O with ADC1 channel 11 input, supporting Timer3 CH3, TSC, Timer1 CH2N, and Comparator functions.
15 PB1 bidirectional 3.3V-tolerant I/O with ADC1 channel 12 input, supporting Timer3 CH4, TSC, Timer1 CH3N, and Comparator4/HRTIM1 outputs.
16 VSS power_in Digital ground connection for I/O pins and internal circuits.
17 VDD power_out Digital power supply from 2.0 to 3.6 V for I/O pins and internal core regulator.
18 PA8 bidirectional 5V-tolerant I/O supporting Master Clock output (MCO), Timer1 CH1, USART1 CK, and HRTIM1 CHA1.
19 PA9 bidirectional 5V-tolerant I/O supporting TSC group 4, Timer1/2 channels, USART1 TX, Timer15 brake, and HRTIM1 CHA2.
20 PA10 bidirectional 5V-tolerant I/O supporting Timer17/1/2 channels, TSC group 4, USART1 RX, Comparator6 output, and HRTIM1 CHB1.
21 PA11 bidirectional 5V-tolerant I/O supporting Timer1 channels, USART1 CTS, CAN RX, and HRTIM1 CHB2.
22 PA12 bidirectional 5V-tolerant I/O supporting Timer16/1, USART1 RTS, CAN TX, Comparator2 output, and HRTIM1 FLT1.
23 PA13 bidirectional 5V-tolerant I/O supporting JTMS/SWDAT debug interface, Timer16 CH1N, TSC, IR output, and USART3 CTS.
24 PA14 bidirectional 5V-tolerant FM+ capable I/O supporting JTCK/SWCLK debug, I2C1 SDA, Timer1 brake input, and USART2 TX.
25 PA15 bidirectional 5V-tolerant FM+ capable I/O supporting JTDI debug, Timer2 CH1/ETR, I2C1 SCL, SPI1 NSS, and HRTIM1 FLT2.
26 PB3 bidirectional 5V-tolerant I/O supporting JTDO/SWO debug output, Timer2 CH2, SPI1 SCK, USART2 TX, and HRTIM1 scout/EEV9.
27 PB4 bidirectional 5V-tolerant I/O supporting NJTRST debug, Timer16/3, SPI1 MISO, USART2 RX, Timer17 brake, and HRTIM1 EEV7.
28 PB5 bidirectional 5V-tolerant I/O supporting Timer16/17, Timer3, I2C1 SMBus alert, SPI1 MOSI, and HRTIM1 EEV6.
29 PB6 bidirectional 5V-tolerant FM+ capable I/O supporting Timer16 CH1N, I2C1 SCL, USART1 TX, and HRTIM1 SCIN/EEV4.
30 PB7 bidirectional 5V-tolerant FM+ capable I/O supporting Timer17 CH1N, I2C1 SDA, USART1 RX, Timer3 CH4, and HRTIM1 EEV3.
31 BOOT0 input Dedicated input pin with 0 to 5.5 V range for selecting boot source between Flash memory, System Memory, or SRAM.
32 VSS power_in Digital ground connection for I/O pins and internal circuits.

Key specifications

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

CAD (KiCad official)

  • Symbol: STM32F334K8T6
  • Footprint: Package_QFP:LQFP-32_7x7mm_P0.8mm
  • 3D model: LQFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: stm32f334k8t6-etched.step / stm32f334k8t6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f334k8t6.step / stm32f334k8t6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (121 pp, sha256 d1d9456eecc89f94, retrieved 2026-09-24, 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