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STM32L451VET6

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STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-100(14x14). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.

componentembedded processors & controllersstm32l451vet6factory-2.0.0extractor-text
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docs stm32l451vet6: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
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STM32L451VET6

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

STM32L451VET6 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 GPIO Port E pin 2, alternate functions include TIM3_ETR, TSC_G7_IO1, SAI1_MCLK_A, TRACECK.
2 PE3 bidirectional GPIO Port E pin 3, alternate functions include TIM3_CH1, TSC_G7_IO2, SAI1_SD_B, TRACED0.
3 PE4 bidirectional GPIO Port E pin 4, alternate functions include TIM3_CH2, DFSDM1_DATIN3, TSC_G7_IO3, SAI1_FS_A, TRACED1.
4 PE5 bidirectional GPIO Port E pin 5, alternate functions include TIM3_CH3, DFSDM1_CKIN3, TSC_G7_IO4, SAI1_SCK_A, TRACED2.
5 PE6 bidirectional GPIO Port E pin 6, alternate functions include TIM3_CH4, SAI1_SD_A, TRACED3.
6 VBAT power_out Backup battery supply voltage, 1.55 V to 3.6 V, supplies RTC and backup registers.
7 PC13 bidirectional GPIO Port C pin 13, alternate functions include RTC_TAMP1, RTC_TS, RTC_OUT, WKUP2; limited to 2 MHz with 30 pF max load.
8 PC14-OSC32_IN bidirectional GPIO Port C pin 14, 32 kHz oscillator input; limited to 2 MHz with 30 pF max load.
9 PC15-OSC32_OUT bidirectional GPIO Port C pin 15, 32 kHz oscillator output; limited to 2 MHz with 30 pF max load.
10 VSS power_in Ground reference for main power supply.
11 VDD power_out Main power supply, 1.71 V to 3.6 V, requires 100 nF decoupling capacitor.
12 PH0-OSC_IN bidirectional GPIO Port H pin 0, main oscillator input, 4 to 48 MHz crystal oscillator.
13 PH1-OSC_OUT bidirectional GPIO Port H pin 1, main oscillator output, 4 to 48 MHz crystal oscillator.
14 NRST bidirectional External reset input with internal pull-up resistor, active low; reset temporization 250-400 μs after BOR0 detection.
15 PC0 bidirectional GPIO Port C pin 0, 5V-tolerant I/O with analog switch, alternate functions include LPTIM1_IN1, I2C4_SCL, I2C3_SCL, LPUART1_RX, ADC1_IN1.
16 PC1 bidirectional GPIO Port C pin 1, 5V-tolerant I/O with analog switch, alternate functions include LPTIM1_OUT, I2C4_SDA, I2C3_SDA, LPUART1_TX, ADC1_IN2, TRACED0.
17 PC2 bidirectional GPIO Port C pin 2, 5V-tolerant I/O with analog switch, alternate functions include LPTIM1_IN2, SPI2_MISO, DFSDM1_CKOUT, ADC1_IN3.
18 PC3 bidirectional GPIO Port C pin 3, 5V-tolerant I/O with analog switch, alternate functions include LPTIM1_ETR, SPI2_MOSI, SAI1_SD_A, LPTIM2_ETR, ADC1_IN4.
19 VSSA power_in Analog ground reference for ADC, DAC, OPAMP, and comparators.
20 VREF- power_in Negative reference voltage for ADC, typically 0 V or connected to VSSA; requires 100 nF and 1 μF capacitors.
21 VREF+ power_in Positive reference voltage for ADC, 2.0 V to VDDA (min 2 V); requires 100 nF and 1 μF capacitors.
22 VDDA power_out Analog power supply, 1.62 V to 3.6 V for ADC/COMP, 1.8 V min for DAC/OPAMP, 2.4 V min for VREFBUF; requires 10 nF and 1 μF capacitors.
23 PA0 bidirectional GPIO Port A pin 0, 5V-tolerant I/O with analog switch, alternate functions include TIM2_CH1, USART2_CTS, UART4_TX, COMP1_OUT, ADC1_IN5, OPAMP1_VINP, RTC_TAMP2, WKUP1.
24 PA1 bidirectional GPIO Port A pin 1, 5V-tolerant I/O with analog switch, alternate functions include TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE, UART4_RX, ADC1_IN6, OPAMP1_VINM.
25 PA2 bidirectional GPIO Port A pin 2, 5V-tolerant I/O with analog switch, alternate functions include TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS, COMP2_OUT, ADC1_IN7, WKUP4, LSCO.
26 PA3 bidirectional GPIO Port A pin 3, 3.6V-tolerant I/O with analog switch, alternate functions include TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK, SAI1_MCLK_A, ADC1_IN8, OPAMP1_VOUT.
27 VSS power_in Ground reference for main power supply.
28 VDD power_out Main power supply, 1.71 V to 3.6 V, requires 100 nF decoupling capacitor.
29 PA4 bidirectional GPIO Port A pin 4, 3.6V-tolerant I/O with analog switch, alternate functions include SPI1_NSS, SPI3_NSS, USART2_CK, SAI1_FS_B, LPTIM2_OUT, ADC1_IN9, DAC1_OUT1.
30 PA5 bidirectional GPIO Port A pin 5, 3.6V-tolerant I/O with analog switch, alternate functions include TIM2_CH1, TIM2_ETR, SPI1_SCK, DFSDM1_CKOUT, LPTIM2_ETR, ADC1_IN10.
31 PA6 bidirectional GPIO Port A pin 6, 5V-tolerant I/O with analog switch, alternate functions include TIM1_BKIN, TIM3_CH1, SPI1_MISO, COMP1_OUT, USART3_CTS, QUADSPI_BK1_IO3, TIM16_CH1, ADC1_IN11.
32 PA7 bidirectional GPIO Port A pin 7, 5V-tolerant I/O with FM+ capability and analog switch, alternate functions include TIM1_CH1N, TIM3_CH2, I2C3_SCL, SPI1_MOSI, DFSDM1_DATIN0, QUADSPI_BK1_IO2, COMP2_OUT, ADC1_IN12.
33 PC4 bidirectional GPIO Port C pin 4, 5V-tolerant I/O with analog switch, alternate functions include USART3_TX, ADC1_IN13.
34 PC5 bidirectional GPIO Port C pin 5, 5V-tolerant I/O with analog switch, alternate functions include USART3_RX, ADC1_IN14, WKUP5.
35 PB0 bidirectional GPIO Port B pin 0, 5V-tolerant I/O with analog switch, alternate functions include TIM1_CH2N, TIM3_CH3, SPI1_NSS, DFSDM1_CKIN0, USART3_CK, QUADSPI_BK1_IO1, COMP1_OUT, ADC1_IN15.
36 PB1 bidirectional GPIO Port B pin 1, 5V-tolerant I/O with analog switch, alternate functions include TIM1_CH3N, TIM3_CH4, DFSDM1_DATIN0, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0, LPTIM2_IN1, ADC1_IN16.
37 PB2 bidirectional GPIO Port B pin 2, 5V-tolerant I/O with analog switch, alternate functions include RTC_OUT, LPTIM1_OUT, I2C3_SMBA, DFSDM1_CKIN0.
38 PE7 bidirectional GPIO Port E pin 7, 5V-tolerant I/O, alternate functions include TIM1_ETR, DFSDM1_DATIN2, SAI1_SD_B.
39 PE8 bidirectional GPIO Port E pin 8, 5V-tolerant I/O, alternate functions include TIM1_CH1N, DFSDM1_CKIN2, SAI1_SCK_B.
40 PE9 bidirectional GPIO Port E pin 9, 5V-tolerant I/O, alternate functions include TIM1_CH1, DFSDM1_CKOUT, SAI1_FS_B.
41 PE10 bidirectional GPIO Port E pin 10, 5V-tolerant I/O, alternate functions include TIM1_CH2N, TSC_G5_IO1, QUADSPI_CLK, SAI1_MCLK_B.
42 PE11 bidirectional GPIO Port E pin 11, 5V-tolerant I/O, alternate functions include TIM1_CH2, TSC_G5_IO2, QUADSPI_BK1_NCS.
43 PE12 bidirectional GPIO Port E pin 12, 5V-tolerant I/O, alternate functions include TIM1_CH3N, SPI1_NSS, TSC_G5_IO3, QUADSPI_BK1_IO0.
44 PE13 bidirectional GPIO Port E pin 13, 5V-tolerant I/O, alternate functions include TIM1_CH3, SPI1_SCK, TSC_G5_IO4, QUADSPI_BK1_IO1.
45 PE14 bidirectional GPIO Port E pin 14, 5V-tolerant I/O, alternate functions include TIM1_CH4, TIM1_BKIN2, SPI1_MISO, QUADSPI_BK1_IO2.
46 PE15 bidirectional GPIO Port E pin 15, 5V-tolerant I/O, alternate functions include TIM1_BKIN, SPI1_MOSI, QUADSPI_BK1_IO3.
47 PB10 bidirectional GPIO Port B pin 10, 5V-tolerant I/O with FM+ capability, alternate functions include TIM2_CH3, I2C4_SCL, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, TSC_SYNC, QUADSPI_CLK, COMP1_OUT, SAI1_SCK_A.
48 PB11 bidirectional GPIO Port B pin 11, 5V-tolerant I/O with FM+ capability, alternate functions include TIM2_CH4, I2C4_SDA, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS, COMP2_OUT.
49 VSS power_in Ground reference for main power supply.
50 VDD power_out Main power supply, 1.71 V to 3.6 V, requires 100 nF decoupling capacitor.
51 PB12 bidirectional GPIO Port B pin 12, 5V-tolerant I/O, alternate functions include TIM1_BKIN, TIM1_BKIN_COMP2, I2C2_SMBA, SPI2_NSS, DFSDM1_DATIN1, USART3_CK, TSC_G1_IO1, CAN1_RX, SAI1_FS_A, TIM15_BKIN.
52 PB13 bidirectional GPIO Port B pin 13, 5V-tolerant I/O with FM+ capability, alternate functions include TIM1_CH1N, I2C2_SCL, SPI2_SCK, DFSDM1_CKIN1, USART3_CTS, TSC_G1_IO2, CAN1_TX, SAI1_SCK_A, TIM15_CH1N.
53 PB14 bidirectional GPIO Port B pin 14, 5V-tolerant I/O with FM+ capability, alternate functions include TIM1_CH2N, I2C2_SDA, SPI2_MISO, DFSDM1_DATIN2, USART3_RTS_DE, TSC_G1_IO3, SAI1_MCLK_A, TIM15_CH1.
54 PB15 bidirectional GPIO Port B pin 15, 5V-tolerant I/O, alternate functions include RTC_REFIN, TIM1_CH3N, SPI2_MOSI, DFSDM1_CKIN2, TSC_G1_IO4, SAI1_SD_A, TIM15_CH2.
55 PD8 bidirectional GPIO Port D pin 8, 5V-tolerant I/O, alternate functions include USART3_TX.
56 PD9 bidirectional GPIO Port D pin 9, 5V-tolerant I/O, alternate functions include USART3_RX.
57 PD10 bidirectional GPIO Port D pin 10, 5V-tolerant I/O, alternate functions include USART3_CK, TSC_G6_IO1.
58 PD11 bidirectional GPIO Port D pin 11, 5V-tolerant I/O, alternate functions include I2C4_SMBA, USART3_CTS, TSC_G6_IO2, LPTIM2_ETR.
59 PD12 bidirectional GPIO Port D pin 12, 5V-tolerant I/O, alternate functions include I2C4_SCL, USART3_RTS_DE, TSC_G6_IO3, LPTIM2_IN1.
60 PD13 bidirectional GPIO Port D pin 13, 5V-tolerant I/O, alternate functions include I2C4_SDA, TSC_G6_IO4, LPTIM2_OUT.
61 PD14 bidirectional GPIO Port D pin 14, 5V-tolerant I/O.
62 PD15 bidirectional GPIO Port D pin 15, 5V-tolerant I/O.
63 PC6 bidirectional GPIO Port C pin 6, 5V-tolerant I/O, alternate functions include TIM3_CH1, DFSDM1_CKIN3, TSC_G4_IO1, SDMMC1_D6.
64 PC7 bidirectional GPIO Port C pin 7, 5V-tolerant I/O, alternate functions include TIM3_CH2, DFSDM1_DATIN3, TSC_G4_IO2, SDMMC1_D7.
65 PC8 bidirectional GPIO Port C pin 8, 5V-tolerant I/O, alternate functions include TIM3_CH3, TSC_G4_IO3, SDMMC1_D0.
66 PC9 bidirectional GPIO Port C pin 9, 5V-tolerant I/O, alternate functions include TIM3_CH4, TSC_G4_IO4, SDMMC1_D1.
67 PA8 bidirectional GPIO Port A pin 8, 5V-tolerant I/O, alternate functions include MCO, TIM1_CH1, DFSDM1_CKIN1, USART1_CK, SAI1_SCK_A, LPTIM2_OUT.
68 PA9 bidirectional GPIO Port A pin 9, 5V-tolerant I/O with FM+ capability, alternate functions include TIM1_CH2, I2C1_SCL, DFSDM1_DATIN1, USART1_TX, SAI1_FS_A, TIM15_BKIN.
69 PA10 bidirectional GPIO Port A pin 10, 5V-tolerant I/O with FM+ capability, alternate functions include TIM1_CH3, I2C1_SDA, USART1_RX, SAI1_SD_A.
70 PA11 bidirectional GPIO Port A pin 11, 5V-tolerant I/O, alternate functions include TIM1_CH4, TIM1_BKIN2, SPI1_MISO, COMP1_OUT, USART1_CTS, CAN1_RX.
71 PA12 bidirectional GPIO Port A pin 12, 5V-tolerant I/O with FM+ capability, alternate functions include TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX.
72 PA13 bidirectional GPIO Port A pin 13 / JTAG TMS / SWD I/O (JTMS/SWDAT), 5V-tolerant I/O, alternate functions include IR_OUT, SAI1_SD_B; configured as JTAG/SWD after reset with internal pull-up.
73 VDD power_out Main power supply, 1.71 V to 3.6 V, requires 100 nF decoupling capacitor.
74 VSS power_in Ground reference for main power supply.
75 VDD power_out Main power supply, 1.71 V to 3.6 V, requires 100 nF decoupling capacitor.
76 PA14 bidirectional GPIO Port A pin 14 / JTAG TCK / SWD CLK (JTCK/SWCLK), 5V-tolerant I/O, alternate functions include LPTIM1_OUT, I2C1_SMBA, I2C4_SMBA, SAI1_FS_B; configured as JTAG/SWD after reset with internal pull-down.
77 PA15 bidirectional GPIO Port A pin 15 / JTAG TDI (JTDI), 5V-tolerant I/O, alternate functions include TIM2_CH1, TIM2_ETR, USART2_RX, SPI1_NSS, SPI3_NSS, USART3_RTS_DE, UART4_RTS_DE, TSC_G3_IO1; configured as JTAG after reset with internal pull-up.
78 PC10 bidirectional GPIO Port C pin 10, 5V-tolerant I/O, alternate functions include TRACED1, SPI3_SCK, USART3_TX, UART4_TX, TSC_G3_IO2, SDMMC1_D2.
79 PC11 bidirectional GPIO Port C pin 11, 5V-tolerant I/O, alternate functions include SPI3_MISO, USART3_RX, UART4_RX, TSC_G3_IO3, SDMMC1_D3.
80 PC12 bidirectional GPIO Port C pin 12, 5V-tolerant I/O, alternate functions include TRACED3, SPI3_MOSI, USART3_CK, TSC_G3_IO4, SDMMC1_CK.
81 PD0 bidirectional GPIO Port D pin 0, 5V-tolerant I/O, alternate functions include SPI2_NSS, CAN1_RX.
82 PD1 bidirectional GPIO Port D pin 1, 5V-tolerant I/O, alternate functions include SPI2_SCK, CAN1_TX.
83 PD2 bidirectional GPIO Port D pin 2, 5V-tolerant I/O, alternate functions include TRACED2, TIM3_ETR, USART3_RTS_DE, TSC_SYNC, SDMMC1_CMD.
84 PD3 bidirectional GPIO Port D pin 3, 5V-tolerant I/O, alternate functions include SPI2_MISO, DFSDM1_DATIN0, USART2_CTS, QUADSPI_BK2_NCS.
85 PD4 bidirectional GPIO Port D pin 4, 5V-tolerant I/O, alternate functions include SPI2_MOSI, DFSDM1_CKIN0, USART2_RTS_DE, QUADSPI_BK2_IO0.
86 PD5 bidirectional GPIO Port D pin 5, 5V-tolerant I/O, alternate functions include USART2_TX, QUADSPI_BK2_IO1.
87 PD6 bidirectional GPIO Port D pin 6, 5V-tolerant I/O, alternate functions include DFSDM1_DATIN1, USART2_RX, QUADSPI_BK2_IO2, SAI1_SD_A.
88 PD7 bidirectional GPIO Port D pin 7, 5V-tolerant I/O, alternate functions include DFSDM1_CKIN1, USART2_CK, QUADSPI_BK2_IO3.
89 PB3 bidirectional GPIO Port B pin 3 / JTAG TDO / SWD trace (JTDO/TRACESWO), 5V-tolerant I/O with analog switch, alternate functions include TIM2_CH2, SPI1_SCK, SPI3_SCK, USART1_RTS_DE, SAI1_SCK_B, COMP2_INM.
90 PB4 bidirectional GPIO Port B pin 4 / JTAG nTRST (NJTRST), 5V-tolerant I/O with FM+ capability and analog switch, alternate functions include TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, USART1_CTS, TSC_G2_IO1, SAI1_MCLK_B, COMP2_INP; configured as JTAG after reset with internal pull-up.
91 PB5 bidirectional GPIO Port B pin 5, 5V-tolerant I/O, alternate functions include LPTIM1_IN1, TIM3_CH2, CAN1_RX, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART1_CK, TSC_G2_IO2, COMP2_OUT, SAI1_SD_B, TIM16_BKIN.
92 PB6 bidirectional GPIO Port B pin 6, 5V-tolerant I/O with FM+ capability and analog switch, alternate functions include LPTIM1_ETR, I2C1_SCL, I2C4_SCL, USART1_TX, CAN1_TX, TSC_G2_IO3, SAI1_FS_B, TIM16_CH1N, COMP2_INP.
93 PB7 bidirectional GPIO Port B pin 7, 5V-tolerant I/O with FM+ capability and analog switch, alternate functions include LPTIM1_IN2, I2C1_SDA, I2C4_SDA, USART1_RX, UART4_CTS, TSC_G2_IO4, COMP2_INM, PVD_IN.
94 PH3-BOOT0 bidirectional GPIO Port H pin 3 / Boot selection pin (BOOT0), selects between boot from main Flash memory (BOOT0=0) or system memory (BOOT0=1).
95 PB8 bidirectional GPIO Port B pin 8, 5V-tolerant I/O with FM+ capability, alternate functions include I2C1_SCL, CAN1_RX, SDMMC1_D4, SAI1_MCLK_A, TIM16_CH1.
96 PB9 bidirectional GPIO Port B pin 9, 5V-tolerant I/O with FM+ capability, alternate functions include IR_OUT, I2C1_SDA, SPI2_NSS, CAN1_TX, SDMMC1_D5, SAI1_FS_A.
97 PE0 bidirectional GPIO Port E pin 0, 5V-tolerant I/O, alternate functions include TIM16_CH1.
98 PE1 bidirectional GPIO Port E pin 1, 5V-tolerant I/O.
99 VSS power_in Ground reference for main power supply.
100 VDD power_out Main power supply, 1.71 V to 3.6 V, requires 100 nF decoupling capacitor.

Key specifications

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

CAD (KiCad official)

  • Symbol: STM32L451VET6
  • Footprint: Package_QFP:LQFP-100_14x14mm_P0.5mm
  • 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)
  • 3D model files: stm32l451vet6-etched.step / stm32l451vet6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32l451vet6.step / stm32l451vet6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (207 pp, sha256 aa4890e697f5f52e, retrieved 2026-10-01, 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