# STM32L443VCT6

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

STM32L443VCT6 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_l, LCD function supplied by VLCD); alternate functions TRACECK, TSC_G7_IO1, LCD_SEG38, SAI1_MCLK_A, EVENTOUT. |
| 2 | PE3 | bidirectional | 5 V-tolerant I/O (FT_l, LCD function supplied by VLCD); alternate functions TRACED0, TSC_G7_IO2, LCD_SEG39, SAI1_SD_B, EVENTOUT. |
| 3 | PE4 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TRACED1, TSC_G7_IO3, SAI1_FS_A, EVENTOUT. |
| 4 | PE5 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TRACED2, TSC_G7_IO4, SAI1_SCK_A, EVENTOUT. |
| 5 | PE6 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TRACED3, SAI1_SD_A, EVENTOUT; additional function RTC_TAMP3/WKUP3. |
| 6 | VBAT | power_in | Backup supply for RTC and backup registers; operating range 1.55 V to 3.6 V. |
| 7 | PC13 | bidirectional | I/O (FT) supplied through the power switch, which sinks only 3 mA, so output use is limited to 2 MHz with 30 pF load and no current-source use; alternate function EVENTOUT, additional function RTC_TAMP1/RTC_TS/RTC_OUT/WKUP2. |
| 8 | PC14-OSC32_IN | bidirectional | I/O (FT) supplied through the power switch with the same 3 mA limit as PC13; LSE oscillator input OSC32_IN when the LSE is enabled. |
| 9 | PC15-OSC32_OUT | bidirectional | I/O (FT) supplied through the power switch with the same 3 mA limit as PC13; LSE oscillator output OSC32_OUT when the LSE is enabled. |
| 10 | VSS | power_in | Ground pin; all VDD and VSS pins must be connected to the external supply within the permitted range. |
| 11 | VDD | power_in | Digital supply pin; standard operating voltage 1.71 V to 3.6 V. |
| 12 | PH0-OSC_IN | bidirectional | 5 V-tolerant I/O (FT); alternate function EVENTOUT; OSC_IN high-speed oscillator input (4 to 48 MHz crystal). |
| 13 | PH1-OSC_OUT | bidirectional | 5 V-tolerant I/O (FT); alternate function EVENTOUT; OSC_OUT high-speed oscillator output (4 to 48 MHz crystal). |
| 14 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor. |
| 15 | PC0 | bidirectional | 5 V-tolerant I/O (FT_fla, analog switch supplied by VDDA, Fm+ capable); alternate functions LPTIM1_IN1, I2C3_SCL, LPUART1_RX, LCD_SEG18, LPTIM2_IN1, EVENTOUT; additional function ADC1_IN1. |
| 16 | PC1 | bidirectional | 5 V-tolerant I/O (FT_fla, analog switch supplied by VDDA, Fm+ capable); alternate functions LPTIM1_OUT, I2C3_SDA, LPUART1_TX, LCD_SEG19, EVENTOUT; additional function ADC1_IN2. |
| 17 | PC2 | bidirectional | 5 V-tolerant I/O (FT_la, analog switch supplied by VDDA); alternate functions LPTIM1_IN2, SPI2_MISO, LCD_SEG20, EVENTOUT; additional function ADC1_IN3. |
| 18 | PC3 | bidirectional | 5 V-tolerant I/O (FT_a, analog switch supplied by VDDA); alternate functions LPTIM1_ETR, SPI2_MOSI, LCD_VLCD, SAI1_SD_A, LPTIM2_ETR, EVENTOUT; additional function ADC1_IN4. |
| 19 | VSSA | power_in | Analog ground pin for ADC, DAC, OPAMP, COMP and VREFBUF. |
| 20 | VREF- | power_in | Negative reference voltage for the ADC; must equal VSSA (negative reference voltage listed as VSSA). |
| 21 | VREF+ | power_in | Positive ADC reference voltage; VREF+ must be at least 2 V when VDDA is 2 V or higher, and equals VDDA when VDDA is below 2 V; additional function VREFBUF_OUT. |
| 22 | VDDA | power_in | Analog supply pin; 1.62 V to 3.6 V when ADC or COMP is used, 1.8 V minimum when DAC or OPAMP is used, and 2.4 V minimum when VREFBUF is used. |
| 23 | PA0 | bidirectional | 5 V-tolerant I/O (FT_a, analog switch supplied by VDDA); alternate functions TIM2_CH1, USART2_CTS, COMP1_OUT, SAI1_EXTCLK, TIM2_ETR, EVENTOUT; additional functions OPAMP1_VINP, COMP1_INM, ADC1_IN5, RTC_TAMP2/WKUP1. |
| 24 | PA1 | bidirectional | 5 V-tolerant I/O (FT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE, LCD_SEG0, TIM15_CH1N, EVENTOUT; additional functions OPAMP1_VINM, COMP1_INP, ADC1_IN6. |
| 25 | PA2 | bidirectional | 5 V-tolerant I/O (FT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS, LCD_SEG1, COMP2_OUT, TIM15_CH1, EVENTOUT; additional functions COMP2_INM, ADC1_IN7, WKUP4/LSCO. |
| 26 | PA3 | bidirectional | 3.6 V-tolerant I/O (TT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK, LCD_SEG2, SAI1_MCLK_A, TIM15_CH2, EVENTOUT; additional functions OPAMP1_VOUT, COMP2_INP, ADC1_IN8. |
| 27 | VSS | power_in | Ground pin; all VDD and VSS pins must be connected to the external supply within the permitted range. |
| 28 | VDD | power_in | Digital supply pin; standard operating voltage 1.71 V to 3.6 V. |
| 29 | PA4 | bidirectional | 3.6 V-tolerant I/O (TT_a, analog switch supplied by VDDA); alternate functions SPI1_NSS, SPI3_NSS, USART2_CK, SAI1_FS_B, LPTIM2_OUT, EVENTOUT; additional functions COMP1_INM, COMP2_INM, ADC1_IN9, DAC1_OUT1; injected current limited to -5/0 mA. |
| 30 | PA5 | bidirectional | 3.6 V-tolerant I/O (TT_a, analog switch supplied by VDDA); alternate functions TIM2_CH1, TIM2_ETR, SPI1_SCK, LPTIM2_ETR, EVENTOUT; additional functions COMP1_INM, COMP2_INM, ADC1_IN10, DAC1_OUT2; injected current limited to -5/0 mA. |
| 31 | PA6 | bidirectional | 5 V-tolerant I/O (FT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions TIM1_BKIN, SPI1_MISO, USART3_CTS, LPUART1_CTS, QUADSPI_BK1_IO3, LCD_SEG3, COMP1_OUT/TIM1_BKIN_COMP2, TIM16_CH1, EVENTOUT; additional function ADC1_IN11. |
| 32 | PA7 | bidirectional | 5 V-tolerant I/O (FT_fla, Fm+ capable, analog switch supplied by VDDA); alternate functions TIM1_CH1N, I2C3_SCL, SPI1_MOSI, QUADSPI_BK1_IO2, LCD_SEG4, COMP2_OUT, EVENTOUT; additional function ADC1_IN12. |
| 33 | PC4 | bidirectional | 5 V-tolerant I/O (FT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions USART3_TX, LCD_SEG22, EVENTOUT; additional functions COMP1_INM, ADC1_IN13. |
| 34 | PC5 | bidirectional | 5 V-tolerant I/O (FT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions USART3_RX, LCD_SEG23, EVENTOUT; additional functions COMP1_INP, ADC1_IN14, WKUP5. |
| 35 | PB0 | bidirectional | 5 V-tolerant I/O (FT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions TIM1_CH2N, SPI1_NSS, USART3_CK, QUADSPI_BK1_IO1, LCD_SEG5, COMP1_OUT, SAI1_EXTCLK, EVENTOUT; additional function ADC1_IN15. |
| 36 | PB1 | bidirectional | 5 V-tolerant I/O (FT_la, LCD and analog switch supplied by VLCD/VDDA); alternate functions TIM1_CH3N, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0, LCD_SEG6, LPTIM2_IN1, EVENTOUT; additional functions COMP1_INM, ADC1_IN16. |
| 37 | PB2 | bidirectional | 5 V-tolerant I/O (FT_a, analog switch supplied by VDDA); alternate functions RTC_OUT, LPTIM1_OUT, I2C3_SMBA, LCD_VLCD, EVENTOUT; additional function COMP1_INP. |
| 38 | PE7 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_ETR, SAI1_SD_B, EVENTOUT. |
| 39 | PE8 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_CH1N, SAI1_SCK_B, EVENTOUT. |
| 40 | PE9 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_CH1, SAI1_FS_B, EVENTOUT. |
| 41 | PE10 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_CH2N, TSC_G5_IO1, QUADSPI_CLK, SAI1_MCLK_B, EVENTOUT. |
| 42 | PE11 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_CH2, TSC_G5_IO2, QUADSPI_BK1_NCS, EVENTOUT. |
| 43 | PE12 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_CH3N, SPI1_NSS, TSC_G5_IO3, QUADSPI_BK1_IO0, EVENTOUT. |
| 44 | PE13 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_CH3, SPI1_SCK, TSC_G5_IO4, QUADSPI_BK1_IO1, EVENTOUT. |
| 45 | PE14 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_CH4, TIM1_BKIN2, TIM1_BKIN2_COMP2, SPI1_MISO, QUADSPI_BK1_IO2, EVENTOUT. |
| 46 | PE15 | bidirectional | 5 V-tolerant I/O (FT); alternate functions TIM1_BKIN, TIM1_BKIN_COMP1, SPI1_MOSI, QUADSPI_BK1_IO3, EVENTOUT. |
| 47 | PB10 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions TIM2_CH3, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, TSC_SYNC, QUADSPI_CLK, LCD_SEG10, COMP1_OUT, SAI1_SCK_A, EVENTOUT. |
| 48 | PB11 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS, LCD_SEG11, COMP2_OUT, EVENTOUT. |
| 49 | VSS | power_in | Ground pin; all VDD and VSS pins must be connected to the external supply within the permitted range. |
| 50 | VDD | power_in | Digital supply pin; standard operating voltage 1.71 V to 3.6 V. |
| 51 | PB12 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions TIM1_BKIN, TIM1_BKIN_COMP2, I2C2_SMBA, SPI2_NSS, USART3_CK, LPUART1_RTS_DE, TSC_G1_IO1, LCD_SEG12, SWPMI1_IO, SAI1_FS_A, TIM15_BKIN, EVENTOUT. |
| 52 | PB13 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS, LPUART1_CTS, TSC_G1_IO2, LCD_SEG13, SWPMI1_TX, SAI1_SCK_A, TIM15_CH1N, EVENTOUT. |
| 53 | PB14 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE, TSC_G1_IO3, LCD_SEG14, SWPMI1_RX, SAI1_MCLK_A, TIM15_CH1, EVENTOUT. |
| 54 | PB15 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions RTC_REFIN, TIM1_CH3N, SPI2_MOSI, TSC_G1_IO4, LCD_SEG15, SWPMI1_SUSPEND, SAI1_SD_A, TIM15_CH2, EVENTOUT. |
| 55 | PD8 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions USART3_TX, LCD_SEG28, EVENTOUT. |
| 56 | PD9 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions USART3_RX, LCD_SEG29, EVENTOUT. |
| 57 | PD10 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions USART3_CK, TSC_G6_IO1, LCD_SEG30, EVENTOUT. |
| 58 | PD11 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions USART3_CTS, TSC_G6_IO2, LCD_SEG31, LPTIM2_ETR, EVENTOUT. |
| 59 | PD12 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions USART3_RTS_DE, TSC_G6_IO3, LCD_SEG32, LPTIM2_IN1, EVENTOUT. |
| 60 | PD13 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions TSC_G6_IO4, LCD_SEG33, LPTIM2_OUT, EVENTOUT. |
| 61 | PD14 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions LCD_SEG34, EVENTOUT. |
| 62 | PD15 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions LCD_SEG35, EVENTOUT. |
| 63 | PC6 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions TSC_G4_IO1, LCD_SEG24, SDMMC1_D6, EVENTOUT. |
| 64 | PC7 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions TSC_G4_IO2, LCD_SEG25, SDMMC1_D7, EVENTOUT. |
| 65 | PC8 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions TSC_G4_IO3, LCD_SEG26, SDMMC1_D0, EVENTOUT. |
| 66 | PC9 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions TSC_G4_IO4, USB_NOE, LCD_SEG27, SDMMC1_D1, EVENTOUT. |
| 67 | PA8 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions MCO, TIM1_CH1, USART1_CK, LCD_COM0, SWPMI1_IO, SAI1_SCK_A, LPTIM2_OUT, EVENTOUT. |
| 68 | PA9 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions TIM1_CH2, I2C1_SCL, USART1_TX, LCD_COM1, SAI1_FS_A, TIM15_BKIN, EVENTOUT. |
| 69 | PA10 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions TIM1_CH3, I2C1_SDA, USART1_RX, USB_CRS_SYNC, LCD_COM2, SAI1_SD_A, EVENTOUT. |
| 70 | PA11 | bidirectional | 5 V-tolerant I/O (FT_u, USB function supplied by VDDUSB); alternate functions TIM1_CH4, TIM1_BKIN2, SPI1_MISO, USART1_CTS, CAN1_RX, USB_DM, TIM1_BKIN2_COMP1, EVENTOUT; additional function COMP1_OUT. |
| 71 | PA12 | bidirectional | 5 V-tolerant I/O (FT_u, USB function supplied by VDDUSB); alternate functions TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX, USB_DP, EVENTOUT. |
| 72 | PA13 (JTMS-SWDIO) | bidirectional | 5 V-tolerant I/O (FT); after reset configured as JTMS-SWDIO with internal pull-up enabled; alternate functions IR_OUT, USB_NOE, SWPMI1_TX, SAI1_SD_B, EVENTOUT. |
| 73 | VDDUSB | power_in | USB supply pin; 3.0 V to 3.6 V when USB is used, and 0 to 3.6 V when USB is not used. |
| 74 | VSS | power_in | Ground pin; all VDD and VSS pins must be connected to the external supply within the permitted range. |
| 75 | VDD | power_in | Digital supply pin; standard operating voltage 1.71 V to 3.6 V. |
| 76 | PA14 (JTCK-SWCLK) | bidirectional | 5 V-tolerant I/O (FT); after reset configured as JTCK-SWCLK with internal pull-down enabled; alternate functions LPTIM1_OUT, I2C1_SMBA, SWPMI1_RX, SAI1_FS_B, EVENTOUT. |
| 77 | PA15 (JTDI) | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); after reset configured as JTDI with internal pull-up enabled; alternate functions TIM2_CH1, TIM2_ETR, USART2_RX, SPI1_NSS, SPI3_NSS, USART3_RTS_DE, TSC_G3_IO1, LCD_SEG17, SWPMI1_SUSPEND, EVENTOUT. |
| 78 | PC10 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions SPI3_SCK, USART3_TX, TSC_G3_IO2, LCD_COM4/LCD_SEG28/LCD_SEG40, SDMMC1_D2, EVENTOUT. |
| 79 | PC11 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions SPI3_MISO, USART3_RX, TSC_G3_IO3, LCD_COM5/LCD_SEG29/LCD_SEG41, SDMMC1_D3, EVENTOUT. |
| 80 | PC12 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions SPI3_MOSI, USART3_CK, TSC_G3_IO4, LCD_COM6/LCD_SEG30/LCD_SEG42, SDMMC1_CK, EVENTOUT. |
| 81 | PD0 | bidirectional | 5 V-tolerant I/O (FT); alternate functions SPI2_NSS, CAN1_RX, EVENTOUT. |
| 82 | PD1 | bidirectional | 5 V-tolerant I/O (FT); alternate functions SPI2_SCK, CAN1_TX, EVENTOUT. |
| 83 | PD2 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions USART3_RTS_DE, TSC_SYNC, LCD_COM7/LCD_SEG31/LCD_SEG43, SDMMC1_CMD, EVENTOUT. |
| 84 | PD3 | bidirectional | 5 V-tolerant I/O (FT); alternate functions SPI2_MISO, USART2_CTS, QUADSPI_BK2_NCS, EVENTOUT. |
| 85 | PD4 | bidirectional | 5 V-tolerant I/O (FT); alternate functions SPI2_MOSI, USART2_RTS_DE, QUADSPI_BK2_IO0, EVENTOUT. |
| 86 | PD5 | bidirectional | 5 V-tolerant I/O (FT); alternate functions USART2_TX, QUADSPI_BK2_IO1, EVENTOUT. |
| 87 | PD6 | bidirectional | 5 V-tolerant I/O (FT); alternate functions USART2_RX, QUADSPI_BK2_IO2, SAI1_SD_A, EVENTOUT. |
| 88 | PD7 | bidirectional | 5 V-tolerant I/O (FT); alternate functions USART2_CK, QUADSPI_BK2_IO3, EVENTOUT. |
| 89 | PB3 (JTDO-TRACESWO) | bidirectional | 5 V-tolerant I/O (FT_la, analog switch supplied by VDDA); after reset configured as JTDO-TRACESWO; alternate functions TIM2_CH2, SPI1_SCK, SPI3_SCK, USART1_RTS_DE, LCD_SEG7, SAI1_SCK_B, EVENTOUT; additional function COMP2_INM. |
| 90 | PB4 (NJTRST) | bidirectional | 5 V-tolerant I/O (FT_fla, analog switch supplied by VDDA); after reset configured as NJTRST with internal pull-up enabled; alternate functions I2C3_SDA, SPI1_MISO, SPI3_MISO, USART1_CTS, TSC_G2_IO1, LCD_SEG8, SAI1_MCLK_B, EVENTOUT; additional function COMP2_INP. |
| 91 | PB5 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions LPTIM1_IN1, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART1_CK, TSC_G2_IO2, LCD_SEG9, COMP2_OUT, SAI1_SD_B, TIM16_BKIN, EVENTOUT. |
| 92 | PB6 | bidirectional | 5 V-tolerant I/O (FT_fa, Fm+ capable, analog switch supplied by VDDA); alternate functions LPTIM1_ETR, I2C1_SCL, USART1_TX, TSC_G2_IO3, SAI1_FS_B, TIM16_CH1N, EVENTOUT; additional function COMP2_INP. |
| 93 | PB7 | bidirectional | 5 V-tolerant I/O (FT_fla, Fm+ capable, analog switch supplied by VDDA); alternate functions LPTIM1_IN2, I2C1_SDA, USART1_RX, TSC_G2_IO4, LCD_SEG21, EVENTOUT; additional functions COMP2_INM, PVD_IN. |
| 94 | PH3-BOOT0 | bidirectional | 5 V-tolerant I/O (FT) that also serves as the BOOT0 boot-mode pin; alternate function EVENTOUT. |
| 95 | PB8 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions I2C1_SCL, CAN1_RX, LCD_SEG16, SDMMC1_D4, SAI1_MCLK_A, TIM16_CH1, EVENTOUT. |
| 96 | PB9 | bidirectional | 5 V-tolerant I/O (FT_fl, Fm+ capable, LCD supplied by VLCD); alternate functions IR_OUT, I2C1_SDA, SPI2_NSS, CAN1_TX, LCD_COM3, SDMMC1_D5, SAI1_FS_A, EVENTOUT. |
| 97 | PE0 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions LCD_SEG36, TIM16_CH1, EVENTOUT. |
| 98 | PE1 | bidirectional | 5 V-tolerant I/O (FT_l, LCD supplied by VLCD); alternate functions LCD_SEG37, EVENTOUT. |
| 99 | VSS | power_in | Ground pin; all VDD and VSS pins must be connected to the external supply within the permitted range. |
| 100 | VDD | power_in | Digital supply pin; standard operating voltage 1.71 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: `STM32L443VCT6`
- Footprint: `Package_QFP:LQFP-100_14x14mm_P0.5mm`
- 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)
- 3D model files: `stm32l443vct6-etched.step` / `stm32l443vct6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32l443vct6.step` / `stm32l443vct6.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/8590907382090719232) (220 pp, sha256 `20193b27a61dfbca`, retrieved 2026-10-08, 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](docs/stm32l443vct6-datasheet.pdf)