# STM32F446VET7

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

STM32F446VET7 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 | 5 V tolerant I/O (FT); alternate functions TRACECLK, SPI4_SCK, SAI1_MCLK_A, QUADSPI_BK1_IO2, FMC_A23, EVENTOUT. |
| 2 | PE3 | bidirectional | 5 V tolerant I/O (FT); alternate functions TRACED0, SAI1_SD_B, FMC_A19, EVENTOUT. |
| 3 | PE4 | bidirectional | 5 V tolerant I/O (FT); alternate functions TRACED1, SPI4_NSS, SAI1_FS_A, FMC_A20, DCMI_D4, EVENTOUT. |
| 4 | PE5 | bidirectional | 5 V tolerant I/O (FT); alternate functions TRACED2, TIM9_CH1, SPI4_MISO, SAI1_SCK_A, FMC_A21, DCMI_D6, EVENTOUT. |
| 5 | PE6 | bidirectional | 5 V tolerant I/O (FT); alternate functions TRACED3, TIM9_CH2, SPI4_MOSI, SAI1_SD_A, FMC_A22, DCMI_D7, EVENTOUT. |
| 6 | VBAT | power_in | Supply pin for the RTC, backup registers and optional backup SRAM when VDD is not present. |
| 7 | PC13 | bidirectional | 5 V tolerant I/O (FT); alternate function EVENTOUT; additional functions TAMP_1/WKUP1. |
| 8 | PC14-OSC32_IN | bidirectional | 5 V tolerant I/O (FT), function after reset PC14; alternate function EVENTOUT; additional function OSC32_IN (32 kHz oscillator input). |
| 9 | PC15-OSC32_OUT | bidirectional | 5 V tolerant I/O (FT), function after reset PC15; alternate function EVENTOUT; additional function OSC32_OUT (32 kHz oscillator output). |
| 10 | VSS | power_in | Ground supply pin. |
| 11 | VDD | power_in | Digital supply pin (application supply and I/Os 1.7 V to 3.6 V). |
| 12 | PH0-OSC_IN | bidirectional | 5 V tolerant I/O (FT), function after reset PH0; alternate function EVENTOUT; additional function OSC_IN (4-26 MHz oscillator input). |
| 13 | PH1-OSC_OUT | bidirectional | 5 V tolerant I/O (FT), function after reset PH1; alternate function EVENTOUT; additional function OSC_OUT (4-26 MHz oscillator output). |
| 14 | NRST | bidirectional | Bidirectional reset pin with weak pull-up resistor (RST structure). |
| 15 | PC0 | bidirectional | 5 V tolerant I/O (FT); alternate functions SAI1_MCLK_B, OTG_HS_ULPI_STP, FMC_SDNWE, EVENTOUT; additional function ADC123_IN10. |
| 16 | PC1 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI3_MOSI/I2S3_SD, SAI1_SD_A, SPI2_MOSI/I2S2_SD, EVENTOUT; additional function ADC123_IN11. |
| 17 | PC2 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI2_MISO, OTG_HS_ULPI_DIR, FMC_SDNE0, EVENTOUT; additional function ADC123_IN12. |
| 18 | PC3 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI2_MOSI/I2S2_SD, OTG_HS_ULPI_NXT, FMC_SDCKE0, EVENTOUT; additional function ADC123_IN13. |
| 19 | VDD | power_in | Digital supply pin (application supply and I/Os 1.7 V to 3.6 V). |
| 20 | VSSA | power_in | Analog ground supply pin (shown as VSSA/VREF- in the pinout figure). |
| 21 | VREF+ | power_in | Positive reference voltage supply pin for the ADCs and DACs. |
| 22 | VDDA | power_in | Analog supply pin for ADC/DAC and analog circuitry. |
| 23 | PA0-WKUP | bidirectional | 5 V tolerant I/O (FT), function after reset PA0; alternate functions TIM2_CH1/TIM2_ETR, TIM5_CH1, TIM8_ETR, USART2_CTS, UART4_TX, EVENTOUT; additional functions ADC123_IN0, WKUP0/TAMP_2. |
| 24 | PA1 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM2_CH2, TIM5_CH2, USART2_RTS, UART4_RX, QUADSPI_BK1_IO3, SAI2_MCLK_B, EVENTOUT; additional function ADC123_IN1. |
| 25 | PA2 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, SAI2_SCK_B, EVENTOUT; additional function ADC123_IN2. |
| 26 | PA3 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM2_CH4, TIM5_CH4, TIM9_CH2, SAI1_FS_A, USART2_RX, OTG_HS_ULPI_D0, EVENTOUT; additional function ADC123_IN3. |
| 27 | VSS | power_in | Ground supply pin. |
| 28 | VDD | power_in | Digital supply pin (application supply and I/Os 1.7 V to 3.6 V). |
| 29 | PA4 | bidirectional | 3.3 V tolerant I/O directly connected to ADC (TTa); alternate functions SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, USART2_CK, OTG_HS_SOF, DCMI_HSYNC, EVENTOUT; additional functions ADC12_IN4, DAC_OUT1. |
| 30 | PA5 | bidirectional | 3.3 V tolerant I/O directly connected to ADC (TTa); alternate functions TIM2_CH1/TIM2_ETR, TIM8_CH1N, SPI1_SCK/I2S1_CK, OTG_HS_ULPI_CK, EVENTOUT; additional functions ADC12_IN5, DAC_OUT2. |
| 31 | PA6 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_BKIN, TIM3_CH1, TIM8_BKIN, SPI1_MISO, I2S2_MCK, TIM13_CH1, DCMI_PIXCLK, EVENTOUT; additional function ADC12_IN6. |
| 32 | PA7 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH1N, TIM3_CH2, TIM8_CH1N, SPI1_MOSI/I2S1_SD, TIM14_CH1, FMC_SDNWE, EVENTOUT; additional function ADC12_IN7. |
| 33 | PC4 | bidirectional | 5 V tolerant I/O (FT); alternate functions I2S1_MCK, SPDIFRX_IN2, FMC_SDNE0, EVENTOUT; additional function ADC12_IN14. |
| 34 | PC5 | bidirectional | 5 V tolerant I/O (FT); alternate functions USART3_RX, SPDIFRX_IN3, FMC_SDCKE0, EVENTOUT; additional function ADC12_IN15. |
| 35 | PB0 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH2N, TIM3_CH3, TIM8_CH2N, SPI3_MOSI/I2S3_SD, UART4_CTS, OTG_HS_ULPI_D1, SDIO_D1, EVENTOUT; additional function ADC12_IN8. |
| 36 | PB1 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH3N, TIM3_CH4, TIM8_CH3N, OTG_HS_ULPI_D2, SDIO_D2, EVENTOUT; additional function ADC12_IN9. |
| 37 | PB2-BOOT1 | bidirectional | 5 V tolerant I/O (FT), function after reset PB2 (BOOT1); alternate functions TIM2_CH4, SAI1_SD_A, SPI3_MOSI/I2S3_SD, QUADSPI_CLK, OTG_HS_ULPI_D4, SDIO_CK, EVENTOUT. |
| 38 | PE7 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_ETR, UART5_RX, QUADSPI_BK2_IO0, FMC_D4, EVENTOUT. |
| 39 | PE8 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH1N, UART5_TX, QUADSPI_BK2_IO1, FMC_D5, EVENTOUT. |
| 40 | PE9 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH1, QUADSPI_BK2_IO2, FMC_D6, EVENTOUT. |
| 41 | PE10 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH2N, QUADSPI_BK2_IO3, FMC_D7, EVENTOUT. |
| 42 | PE11 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH2, SPI4_NSS, SAI2_SD_B, FMC_D8, EVENTOUT. |
| 43 | PE12 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH3N, SPI4_SCK, SAI2_SCK_B, FMC_D9, EVENTOUT. |
| 44 | PE13 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH3, SPI4_MISO, SAI2_FS_B, FMC_D10, EVENTOUT. |
| 45 | PE14 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH4, SPI4_MOSI, SAI2_MCLK_B, FMC_D11, EVENTOUT. |
| 46 | PE15 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_BKIN, FMC_D12, EVENTOUT. |
| 47 | PB10 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK/I2S2_CK, SAI1_SCK_A, USART3_TX, OTG_HS_ULPI_D3, EVENTOUT. |
| 48 | VCAP_1 | passive | Supply pin for the 1.2 V internal regulator output, requiring an external capacitor. |
| 49 | VSS | power_in | Ground supply pin. |
| 50 | VDD | power_in | Digital supply pin (application supply and I/Os 1.7 V to 3.6 V). |
| 51 | PB12 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_BKIN, I2C2_SMBA, SPI2_NSS/I2S2_WS, SAI1_SCK_B, USART3_CK, CAN2_RX, OTG_HS_ULPI_D5, OTG_HS_ID, EVENTOUT. |
| 52 | PB13 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH1N, SPI2_SCK/I2S2_CK, USART3_CTS, CAN2_TX, OTG_HS_ULPI_D6, EVENTOUT; additional function OTG_HS_VBUS. |
| 53 | PB14 | bidirectional | 5 V tolerant I/O (FT) supplied by VDDUSB; alternate functions TIM1_CH2N, TIM8_CH2N, SPI2_MISO, USART3_RTS, TIM12_CH1, OTG_HS_DM, EVENTOUT. |
| 54 | PB15 | bidirectional | 5 V tolerant I/O (FT) supplied by VDDUSB; alternate functions RTC_REFIN, TIM1_CH3N, TIM8_CH3N, SPI2_MOSI/I2S2_SD, TIM12_CH2, OTG_HS_DP, EVENTOUT. |
| 55 | PD8 | bidirectional | 5 V tolerant I/O (FT); alternate functions USART3_TX, SPDIFRX_IN1, FMC_D13, EVENTOUT. |
| 56 | PD9 | bidirectional | 5 V tolerant I/O (FT); alternate functions USART3_RX, FMC_D14, EVENTOUT. |
| 57 | PD10 | bidirectional | 5 V tolerant I/O (FT); alternate functions USART3_CK, FMC_D15, EVENTOUT. |
| 58 | PD11 | bidirectional | 5 V tolerant I/O (FT); alternate functions FMPI2C1_SMBA, USART3_CTS, QUADSPI_BK1_IO0, SAI2_SD_A, FMC_A16, EVENTOUT. |
| 59 | PD12 | bidirectional | 5 V tolerant I/O with I2C FM+ option (FTf); alternate functions TIM4_CH1, FMPI2C1_SCL, USART3_RTS, QUADSPI_BK1_IO1, SAI2_FS_A, FMC_A17, EVENTOUT. |
| 60 | PD13 | bidirectional | 5 V tolerant I/O with I2C FM+ option (FTf); alternate functions TIM4_CH2, FMPI2C1_SDA, QUADSPI_BK1_IO3, SAI2_SCK_A, FMC_A18, EVENTOUT. |
| 61 | PD14 | bidirectional | 5 V tolerant I/O with I2C FM+ option (FTf); alternate functions TIM4_CH3, FMPI2C1_SCL, SAI2_SCK_A, FMC_D0, EVENTOUT. |
| 62 | PD15 | bidirectional | 5 V tolerant I/O with I2C FM+ option (FTf); alternate functions TIM4_CH4, FMPI2C1_SDA, FMC_D1, EVENTOUT. |
| 63 | PC6 | bidirectional | 5 V tolerant I/O with I2C FM+ option (FTf); alternate functions TIM3_CH1, TIM8_CH1, FMPI2C1_SCL, I2S2_MCK, USART6_TX, SDIO_D6, DCMI_D0, EVENTOUT. |
| 64 | PC7 | bidirectional | 5 V tolerant I/O with I2C FM+ option (FTf); alternate functions TIM3_CH2, TIM8_CH2, FMPI2C1_SDA, SPI2_SCK/I2S2_CK, I2S3_MCK, SPDIFRX_IN1, USART6_RX, SDIO_D7, DCMI_D1, EVENTOUT. |
| 65 | PC8 | bidirectional | 5 V tolerant I/O (FT); alternate functions TRACED0, TIM3_CH3, TIM8_CH3, UART5_RTS, USART6_CK, SDIO_D0, DCMI_D2, EVENTOUT. |
| 66 | PC9 | bidirectional | 5 V tolerant I/O (FT); alternate functions MCO2, TIM3_CH4, TIM8_CH4, I2C3_SDA, I2S_CKIN, UART5_CTS, QUADSPI_BK1_IO0, SDIO_D1, DCMI_D3, EVENTOUT. |
| 67 | PA8 | bidirectional | 5 V tolerant I/O (FT); alternate functions MCO1, TIM1_CH1, I2C3_SCL, USART1_CK, OTG_FS_SOF, EVENTOUT. |
| 68 | PA9 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH2, I2C3_SMBA, SPI2_SCK/I2S2_CK, SAI1_SD_B, USART1_TX, DCMI_D0, EVENTOUT; additional function OTG_FS_VBUS. |
| 69 | PA10 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM1_CH3, USART1_RX, OTG_FS_ID, DCMI_D1, EVENTOUT. |
| 70 | PA11 | bidirectional | 5 V tolerant I/O (FT) supplied by VDDUSB; alternate functions TIM1_CH4, USART1_CTS, CAN1_RX, OTG_FS_DM, EVENTOUT. |
| 71 | PA12 | bidirectional | 5 V tolerant I/O (FT) supplied by VDDUSB; alternate functions TIM1_ETR, USART1_RTS, SAI2_FS_B, CAN1_TX, OTG_FS_DP, EVENTOUT. |
| 72 | PA13(JTMS-SWDIO) | bidirectional | 5 V tolerant I/O (FT), function after reset JTMS-SWDIO; alternate function EVENTOUT. |
| 73 | VCAP_2 | passive | Supply pin for the 1.2 V internal regulator output, requiring an external capacitor. |
| 74 | VSS | power_in | Ground supply pin. |
| 75 | VDD | power_in | Digital supply pin (application supply and I/Os 1.7 V to 3.6 V). |
| 76 | PA14(JTCK-SWCLK) | bidirectional | 5 V tolerant I/O (FT), function after reset JTCK-SWCLK; alternate function EVENTOUT. |
| 77 | PA15(JTDI) | bidirectional | 5 V tolerant I/O (FT), function after reset JTDI; alternate functions TIM2_CH1/TIM2_ETR, HDMI_CEC, SPI1_NSS/I2S1_WS, SPI3_NSS/I2S3_WS, UART4_RTS, EVENTOUT. |
| 78 | PC10 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI3_SCK/I2S3_CK, USART3_TX, UART4_TX, QUADSPI_BK1_IO1, SDIO_D2, DCMI_D8, EVENTOUT. |
| 79 | PC11 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI3_MISO, USART3_RX, UART4_RX, QUADSPI_BK2_NCS, SDIO_D3, DCMI_D4, EVENTOUT. |
| 80 | PC12 | bidirectional | 5 V tolerant I/O (FT); alternate functions I2C2_SDA, SPI3_MOSI/I2S3_SD, USART3_CK, UART5_TX, SDIO_CK, DCMI_D9, EVENTOUT. |
| 81 | PD0 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI4_MISO, SPI3_MOSI/I2S3_SD, CAN1_RX, FMC_D2, EVENTOUT. |
| 82 | PD1 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI2_NSS/I2S2_WS, CAN1_TX, FMC_D3, EVENTOUT. |
| 83 | PD2 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM3_ETR, UART5_RX, SDIO_CMD, DCMI_D11, EVENTOUT. |
| 84 | PD3 | bidirectional | 5 V tolerant I/O (FT); alternate functions TRACED1, SPI2_SCK/I2S2_CK, USART2_CTS, QUADSPI_CLK, FMC_CLK, DCMI_D5, EVENTOUT. |
| 85 | PD4 | bidirectional | 5 V tolerant I/O (FT); alternate functions USART2_RTS, FMC_NOE, EVENTOUT. |
| 86 | PD5 | bidirectional | 5 V tolerant I/O (FT); alternate functions USART2_TX, FMC_NWE, EVENTOUT. |
| 87 | PD6 | bidirectional | 5 V tolerant I/O (FT); alternate functions SPI3_MOSI/I2S3_SD, SAI1_SD_A, USART2_RX, FMC_NWAIT, DCMI_D10, EVENTOUT. |
| 88 | PD7 | bidirectional | 5 V tolerant I/O (FT); alternate functions USART2_CK, SPDIFRX_IN0, FMC_NE1, EVENTOUT. |
| 89 | PB3(JTDO/TRACESWO) | bidirectional | 5 V tolerant I/O (FT), function after reset JTDO/TRACESWO; alternate functions TIM2_CH2, I2C2_SDA, SPI1_SCK/I2S1_CK, SPI3_SCK/I2S3_CK, EVENTOUT. |
| 90 | PB4(NJTRST) | bidirectional | 5 V tolerant I/O (FT), function after reset NJTRST; alternate functions TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, SPI2_NSS/I2S2_WS, EVENTOUT. |
| 91 | PB5 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM3_CH2, I2C1_SMBA, SPI1_MOSI/I2S1_SD, SPI3_MOSI/I2S3_SD, CAN2_RX, OTG_HS_ULPI_D7, FMC_SDCKE1, DCMI_D10, EVENTOUT. |
| 92 | PB6 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM4_CH1, HDMI_CEC, I2C1_SCL, USART1_TX, CAN2_TX, QUADSPI_BK1_NCS, FMC_SDNE1, DCMI_D5, EVENTOUT. |
| 93 | PB7 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM4_CH2, I2C1_SDA, USART1_RX, SPDIFRX_IN0, FMC_NL, DCMI_VSYNC, EVENTOUT. |
| 94 | BOOT0 | input | Dedicated boot mode selection input (B structure); additional function VPP. |
| 95 | PB8 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM2_CH1/TIM2_ETR, TIM4_CH3, TIM10_CH1, I2C1_SCL, CAN1_RX, SDIO_D4, DCMI_D6, EVENTOUT. |
| 96 | PB9 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM2_CH2, TIM4_CH4, TIM11_CH1, I2C1_SDA, SPI2_NSS/I2S2_WS, SAI1_FS_B, CAN1_TX, SDIO_D5, DCMI_D7, EVENTOUT. |
| 97 | PE0 | bidirectional | 5 V tolerant I/O (FT); alternate functions TIM4_ETR, SAI2_MCLK_A, FMC_NBL0, DCMI_D2, EVENTOUT. |
| 98 | PE1 | bidirectional | 5 V tolerant I/O (FT); alternate functions FMC_NBL1, DCMI_D3, EVENTOUT. |
| 99 | VSS | power_in | Ground supply pin. |
| 100 | VDD | power_in | Digital supply pin (application supply and I/Os 1.7 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: `STM32F446VET7`
- Footprint: `Package_QFP:LQFP-100_14x14mm_P0.5mm`
- 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)
- 3D model files: `stm32f446vet7-etched.step` / `stm32f446vet7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32f446vet7.step` / `stm32f446vet7.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8581082927985590272) (198 pp, sha256 `3902cf9f939a0ef6`, retrieved 2026-10-07, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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](docs/stm32f446vet7-datasheet.pdf)