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Contents

README

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STM32F303VET6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-100(14x14)

STM32F303VET6 from STMicroelectronics, in a LQFP-100(14x14). 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 PE2 bidirectional 5V-tolerant (FT) I/O; alternate functions TRACECK, EVENTOUT, TIM3_CH1, TSC_G7_IO1, SPI4_SCK, TIM20_CH1, FMC_A23.
2 PE3 bidirectional 5V-tolerant (FT) I/O; alternate functions TRACED0, EVENTOUT, TIM3_CH2, TSC_G7_IO2, SPI4_NSS, TIM20_CH2, FMC_A19.
3 PE4 bidirectional 5V-tolerant (FT) I/O; alternate functions TRACED1, EVENTOUT, TIM3_CH3, TSC_G7_IO3, SPI4_NSS, TIM20_CH1N, FMC_A20.
4 PE5 bidirectional 5V-tolerant (FT) I/O; alternate functions TRACED2, EVENTOUT, TIM3_CH4, TSC_G7_IO4, SPI4_MISO, TIM20_CH2N, FMC_A21.
5 PE6 bidirectional 5V-tolerant (FT) I/O; alternate functions TRACED3, EVENTOUT, SPI4_MOSI, TIM20_CH3N, FMC_A22; additional functions WKUP3, RTC_TAMP3.
6 VBAT power_in Battery backup power input for RTC, 32 kHz oscillator and backup registers when main VDD is not present.
7 PC13 bidirectional Standard 3.3V (TC) I/O; alternate functions EVENTOUT, TIM1_CH1N; additional functions WKUP2, RTC_TAMP1, RTC_TS, RTC_OUT; supplied through the power switch (limited to 3 mA sink), so in output mode speed must not exceed 2 MHz with max 30 pF load and must not be used as a current source.
8 PC14-OSC32_IN bidirectional Standard 3.3V (TC) I/O; alternate function EVENTOUT; additional function OSC32_IN (32.768 kHz RTC crystal input); supplied through the power switch with the same 3 mA/2 MHz/30 pF output limitations as PC13.
9 PC15-OSC32_OUT bidirectional Standard 3.3V (TC) I/O; alternate function EVENTOUT; additional function OSC32_OUT (32.768 kHz RTC crystal output); supplied through the power switch with the same 3 mA/2 MHz/30 pF output limitations as PC13.
10 PF9 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM20_BKIN, TIM15_CH1, SPI2_SCK, FMC_CD.
11 PF10 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM20_BKIN2, TIM15_CH2, SPI2_SCK, FMC_INTR.
12 PF0-OSC_IN input 5V-tolerant I2C FM+ (FTf) input; alternate functions EVENTOUT, I2C2_SDA, SPI2_NSS/I2S2_WS, TIM1_CH3N; additional function OSC_IN (4-32 MHz HSE crystal oscillator input).
13 PF1-OSC_OUT output 5V-tolerant I2C FM+ (FTf) output; alternate functions EVENTOUT, I2C2_SCL, SPI2_SCK/I2S2_CK; additional function OSC_OUT (4-32 MHz HSE crystal oscillator output).
14 NRST bidirectional Bi-directional reset pin with embedded weak pull-up resistor; active-low device reset input and internal reset output.
15 PC0 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH1; additional functions ADC12_IN6, COMP7_INM.
16 PC1 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH2; additional functions ADC12_IN7, COMP7_INP.
17 PC2 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH3, COMP7_OUT; additional function ADC12_IN8.
18 PC3 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH4, TIM1_BKIN2; additional function ADC12_IN9.
19 PF2 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM20_CH3, FMC_A2; additional function ADC12_IN10.
20 VSSA power_in Analog ground supply pin.
21 VREF+ power_in Positive reference voltage input for the ADC, 2 V to VDDA (note: on the 64-pin package only, VREF+ is internally tied to VDDA; on this 100-pin package it is a separate pin).
22 VDDA power_in Analog power supply, 2.0 V to 3.6 V, separate analog supply for ADCs (0-3.6V conversion range), DACs (2.4-3.6V), comparators (2.0-3.6V) and operational amplifiers (2.4-3.6V).
23 PA0 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TIM2_CH1/TIM2_ETR, TSC_G1_IO1, USART2_CTS, COMP1_OUT, TIM8_BKIN, TIM8_ETR, EVENTOUT; additional functions ADC1_IN1 (fast channel), COMP1_INM, RTC_TAMP2, WKUP1.
24 PA1 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions RTC_REFIN, TIM2_CH2, TSC_G1_IO2, USART2_RTS, TIM15_CH1N, EVENTOUT; additional functions ADC1_IN2 (fast channel), COMP1_INP, OPAMP1_VINP, OPAMP3_VINP.
25 PA2 bidirectional 3.3V-tolerant (TTa) I/O with reduced touch-sensing sensitivity; alternate functions TIM2_CH3, TSC_G1_IO3, USART2_TX, COMP2_OUT, TIM15_CH1, EVENTOUT; additional functions ADC1_IN3 (fast channel), COMP2_INM, OPAMP1_VOUT.
26 PA3 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TIM2_CH4, TSC_G1_IO4, USART2_RX, TIM15_CH2, EVENTOUT; additional functions ADC1_IN4 (fast channel), OPAMP1_VINM, OPAMP1_VINP.
27 VSS power_in Digital ground supply pin.
28 VDD power_in Digital power supply pin, 2.0 V to 3.6 V.
29 PA4 bidirectional 3.3V-tolerant (TTa) I/O with reduced touch-sensing sensitivity; alternate functions TIM3_CH2, TSC_G2_IO1, SPI1_NSS, SPI3_NSS/I2S3_WS, USART2_CK, EVENTOUT; additional functions ADC2_IN1 (fast channel), DAC1_OUT1, COMP1..7_INM, OPAMP4_VINP.
30 PA5 bidirectional 3.3V-tolerant (TTa) I/O with reduced touch-sensing sensitivity; alternate functions TIM2_CH1/TIM2_ETR, TSC_G2_IO2, SPI1_SCK, EVENTOUT; additional functions ADC2_IN2 (fast channel), DAC1_OUT2, COMP1..7_INM, OPAMP1_VINP, OPAMP2_VINM, OPAMP3_VINP.
31 PA6 bidirectional 3.3V-tolerant (TTa) I/O with reduced touch-sensing sensitivity; alternate functions TIM16_CH1, TIM3_CH1, TSC_G2_IO3, TIM8_BKIN, SPI1_MISO, TIM1_BKIN, COMP1_OUT, EVENTOUT; additional functions ADC2_IN3 (fast channel), OPAMP2_VOUT.
32 PA7 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TIM17_CH1, TIM3_CH2, TSC_G2_IO4, TIM8_CH1N, SPI1_MOSI, TIM1_CH1N, EVENTOUT; additional functions ADC2_IN4 (fast channel), COMP2_INP, OPAMP1_VINP, OPAMP2_VINP.
33 PC4 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_ETR, USART1_TX; additional function ADC2_IN5 (fast channel).
34 PC5 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM15_BKIN, TSC_G3_IO1, USART1_RX; additional functions ADC2_IN11, OPAMP1_VINM, OPAMP2_VINM.
35 PB0 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TIM3_CH3, TSC_G3_IO2, TIM8_CH2N, TIM1_CH2N, EVENTOUT; additional functions ADC3_IN12, COMP4_INP, OPAMP2_VINP, OPAMP3_VINP.
36 PB1 bidirectional 3.3V-tolerant (TTa) I/O with reduced touch-sensing sensitivity; alternate functions TIM3_CH4, TSC_G3_IO3, TIM8_CH3N, TIM1_CH3N, COMP4_OUT, EVENTOUT; additional functions ADC3_IN1 (fast channel), OPAMP3_VOUT.
37 PB2 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TSC_G3_IO4, EVENTOUT; additional functions ADC2_IN12, COMP4_INM, OPAMP3_VINM.
38 PE7 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_ETR, FMC_D4; additional function ADC3_IN13.
39 PE8 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH1N, FMC_D5; additional functions ADC34_IN6, COMP4_INM.
40 PE9 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH1, FMC_D6; additional function ADC3_IN2 (fast channel).
41 PE10 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH2N, FMC_D7; additional function ADC3_IN14.
42 PE11 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH2, SPI4_NSS, FMC_D8; additional function ADC3_IN15.
43 PE12 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH3N, SPI4_SCK, FMC_D9; additional function ADC3_IN16.
44 PE13 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH3, SPI4_MISO, FMC_D10; additional function ADC3_IN3 (fast channel).
45 PE14 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_CH4, SPI4_MOSI, TIM1_BKIN2, FMC_D11; additional function ADC4_IN1 (fast channel).
46 PE15 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM1_BKIN, USART3_RX, FMC_D12; additional function ADC4_IN2 (fast channel).
47 PB10 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TIM2_CH3, TSC_SYNC, USART3_TX, EVENTOUT; additional functions COMP5_INM, OPAMP3_VINM, OPAMP4_VINM.
48 PB11 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TIM2_CH4, TSC_G6_IO1, USART3_RX, EVENTOUT; additional functions ADC12_IN14, COMP6_INP, OPAMP4_VINP.
49 VSS power_in Digital ground supply pin.
50 VDD power_in Digital power supply pin, 2.0 V to 3.6 V.
51 PB12 bidirectional 3.3V-tolerant (TTa) I/O with reduced touch-sensing sensitivity; alternate functions TSC_G6_IO2, I2C2_SMBAL, SPI2_NSS/I2S2_WS, TIM1_BKIN, USART3_CK, EVENTOUT; additional functions ADC4_IN3 (fast channel), COMP3_INM, OPAMP4_VOUT.
52 PB13 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TSC_G6_IO3, SPI2_SCK/I2S2_CK, TIM1_CH1N, USART3_CTS, EVENTOUT; additional functions ADC3_IN5 (fast channel), COMP5_INP, OPAMP3_VINP, OPAMP4_VINP.
53 PB14 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions TIM15_CH1, TSC_G6_IO4, SPI2_MISO/I2S2ext_SD, TIM1_CH2N, USART3_RTS, EVENTOUT; additional functions ADC4_IN4 (fast channel), COMP3_INP, OPAMP2_VINP.
54 PB15 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions RTC_REFIN, TIM15_CH2, TIM15_CH1N, TIM1_CH3N, SPI2_MOSI/I2S2_SD, EVENTOUT; additional functions ADC4_IN5 (fast channel), COMP6_INM.
55 PD8 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, USART3_TX, FMC_D13; additional functions ADC4_IN12, OPAMP4_VINM.
56 PD9 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, USART3_RX, FMC_D14; additional function ADC4_IN13.
57 PD10 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, USART3_CK, FMC_D15; additional functions ADC34_IN7, COMP6_INM.
58 PD11 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, USART3_CTS, FMC_A16; additional functions ADC34_IN8, OPAMP4_VINP.
59 PD12 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM4_CH1, TSC_G8_IO1, USART3_RTS, FMC_A17; additional function ADC34_IN9.
60 PD13 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM4_CH2, TSC_G8_IO2, FMC_A18; additional functions ADC34_IN10, COMP5_INM.
61 PD14 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM4_CH3, TSC_G8_IO3, FMC_D0; additional functions ADC34_IN11, OPAMP2_VINP.
62 PD15 bidirectional 3.3V-tolerant (TTa) I/O; alternate functions EVENTOUT, TIM4_CH4, TSC_G8_IO4, SPI2_NSS, FMC_D1; additional function COMP3_INM.
63 PC6 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM3_CH1, TIM8_CH1, I2S2_MCK, COMP6_OUT.
64 PC7 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM3_CH2, TIM8_CH2, I2S3_MCK, COMP5_OUT.
65 PC8 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM3_CH3, TIM8_CH3, COMP3_OUT.
66 PC9 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions EVENTOUT, TIM3_CH4, I2C3_SDA, TIM8_CH4, I2SCKIN, TIM8_BKIN2.
67 PA8 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions MCO, I2C3_SCL, I2C2_SMBAL, I2S2_MCK, TIM1_CH1, USART1_CK, COMP3_OUT, TIM4_ETR, EVENTOUT.
68 PA9 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions I2C3_SMBAL, TSC_G4_IO1, I2C2_SCL, I2S3_MCK, TIM1_CH2, USART1_TX, COMP5_OUT, TIM15_BKIN, TIM2_CH3, EVENTOUT.
69 PA10 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions TIM17_BKIN, TSC_G4_IO2, I2C2_SDA, SPI2_MISO/I2S2ext_SD, TIM1_CH3, USART1_RX, COMP6_OUT, TIM2_CH4, TIM8_BKIN, EVENTOUT.
70 PA11 bidirectional 5V-tolerant (FT) I/O; alternate functions SPI2_MOSI/I2S2_SD, TIM1_CH1N, USART1_CTS, COMP1_OUT, CAN_RX, TIM4_CH1, TIM1_CH4, TIM1_BKIN2, EVENTOUT; additional function USB_DM.
71 PA12 bidirectional 5V-tolerant (FT) I/O; alternate functions TIM16_CH1, I2SCKIN, TIM1_CH2N, USART1_RTS, COMP2_OUT, CAN_TX, TIM4_CH2, TIM1_ETR, EVENTOUT; additional function USB_DP.
72 PA13 bidirectional 5V-tolerant (FT) I/O; alternate functions SWDIO-JTMS, TIM16_CH1N, TSC_G4_IO3, IR-OUT, USART3_CTS, TIM4_CH3, EVENTOUT.
73 PF6 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions EVENTOUT, TIM4_CH4, I2C2_SCL, USART3_RTS, FMC_NIORD.
74 VSS power_in Digital ground supply pin.
75 VDD power_in Digital power supply pin, 2.0 V to 3.6 V.
76 PA14 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions SWCLK-JTCK, TSC_G4_IO4, I2C1_SDA, TIM8_CH2, TIM1_BKIN, USART2_TX, EVENTOUT.
77 PA15 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions JTDI, TIM2_CH1/TIM2_ETR, TIM8_CH1, TSC_SYNC, I2C1_SCL, SPI1_NSS, SPI3_NSS/I2S3_WS, USART2_RX, TIM1_BKIN, EVENTOUT.
78 PC10 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM8_CH1N, UART4_TX, SPI3_SCK/I2S3_CK, USART3_TX.
79 PC11 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM8_CH2N, UART4_RX, SPI3_MISO/I2S3ext_SD, USART3_RX.
80 PC12 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM8_CH3N, UART5_TX, SPI3_MOSI/I2S3_SD, USART3_CK.
81 PD0 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, CAN_RX, FMC_D2.
82 PD1 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM8_CH4, TIM8_BKIN2, CAN_TX, FMC_D3.
83 PD2 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM3_ETR, TIM8_BKIN, UART5_RX.
84 PD3 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM2_CH1/TIM2_ETR, USART2_CTS, FMC_CLK.
85 PD4 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM2_CH2, USART2_RTS, FMC_NOE.
86 PD5 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, USART2_TX, FMC_NWE.
87 PD6 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM2_CH4, USART2_RX, FMC_NWAIT.
88 PD7 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM2_CH3, USART2_CK, FMC_NE1/FMC_NCE2.
89 PB3 bidirectional 5V-tolerant (FT) I/O; alternate functions JTDO-TRACESWO, TIM2_CH2, TIM4_ETR, TSC_G5_IO1, TIM8_CH1N, SPI1_SCK, SPI3_SCK/I2S3_CK, USART2_TX, TIM3_ETR, EVENTOUT.
90 PB4 bidirectional 5V-tolerant (FT) I/O; alternate functions JTRST, TIM16_CH1, TIM3_CH1, TSC_G5_IO2, TIM8_CH2N, SPI1_MISO, SPI3_MISO/I2S3ext_SD, USART2_RX, TIM17_BKIN, EVENTOUT.
91 PB5 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions TIM16_BKIN, TIM3_CH2, TIM8_CH3N, I2C1_SMBAL, SPI1_MOSI, SPI3_MOSI/I2S3_SD, USART2_CK, I2C3_SDA, TIM17_CH1, EVENTOUT.
92 PB6 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions TIM16_CH1N, TIM4_CH1, TSC_G5_IO3, I2C1_SCL, TIM8_CH1, TIM8_ETR, USART1_TX, TIM8_BKIN2, EVENTOUT.
93 PB7 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions TIM17_CH1N, TIM4_CH2, TSC_G5_IO4, I2C1_SDA, TIM8_BKIN, USART1_RX, TIM3_CH4, FMC_NADV, EVENTOUT.
94 BOOT0 input Dedicated boot-mode selection input, sampled at reset to select the boot source (Flash, system memory or embedded SRAM).
95 PB8 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions TIM16_CH1, TIM4_CH3, TSC_SYNC, I2C1_SCL, USART3_RX, COMP1_OUT, CAN_RX, TIM8_CH2, TIM1_BKIN, EVENTOUT.
96 PB9 bidirectional 5V-tolerant I2C FM+ (FTf) I/O; alternate functions TIM17_CH1, TIM4_CH4, I2C1_SDA, IR-OUT, USART3_TX, COMP2_OUT, CAN_TX, TIM8_CH3, EVENTOUT.
97 PE0 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM4_ETR, TIM16_CH1, TIM20_ETR, USART1_TX, FMC_NBL0.
98 PE1 bidirectional 5V-tolerant (FT) I/O; alternate functions EVENTOUT, TIM17_CH1, TIM20_CH4, USART1_RX, FMC_NBL1.
99 VSS power_in Digital ground supply pin.
100 VDD power_in Digital power supply pin, 2.0 V to 3.6 V.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-100(14x14)
Category Embedded Processors & Controllers
Pins 100

CAD (KiCad official)

  • Symbol: STM32F303VET6
  • Footprint: Package_QFP:LQFP-100_14x14mm_P0.5mm
  • 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)
  • 3D model files: stm32f303vet6-etched.step / stm32f303vet6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32f303vet6.step / stm32f303vet6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (173 pp, sha256 5009ea08fac5eb65, 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