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STM32L462VET6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-100(14x14). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32L462VET6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-100(14x14)
STM32L462VET6 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 (FT) I/O; alternate functions TRACECK, TIM3_ETR, TSC_G7_IO1, SAI1_MCLK_A, EVENTOUT. |
| 2 | PE3 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TRACED0, TIM3_CH1, TSC_G7_IO2, SAI1_SD_B, EVENTOUT. |
| 3 | PE4 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TRACED1, TIM3_CH2, DFSDM1_DATIN3, TSC_G7_IO3, SAI1_FS_A, EVENTOUT. |
| 4 | PE5 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TRACED2, TIM3_CH3, DFSDM1_CKIN3, TSC_G7_IO4, SAI1_SCK_A, EVENTOUT. |
| 5 | PE6 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TRACED3, TIM3_CH4, SAI1_SD_A, EVENTOUT; additional functions RTC_TAMP3, WKUP3. |
| 6 | VBAT | power_in | Backup supply for the RTC and 32x32-bit backup registers, 1.55 V to 3.6 V. |
| 7 | PC13 | bidirectional | 5 V-tolerant I/O supplied through the power switch that sinks only 3 mA, so output speed must not exceed 2 MHz at 30 pF and it must not source current (e.g. LEDs); additional functions RTC_TAMP1, RTC_TS, RTC_OUT, WKUP2. |
| 8 | PC14-OSC32_IN | bidirectional | 5 V-tolerant I/O with the same power-switch limits as PC13 (3 mA sink, max 2 MHz at 30 pF, no current sourcing); additional function OSC32_IN (LSE 32 kHz crystal input). |
| 9 | PC15-OSC32_OUT | bidirectional | 5 V-tolerant I/O with the same power-switch limits as PC13 (3 mA sink, max 2 MHz at 30 pF, no current sourcing); additional function OSC32_OUT (LSE 32 kHz crystal output). |
| 10 | VSS | power_in | Ground pin. |
| 11 | VDD | power_in | Standard digital supply pin, 1.71 V to 3.6 V. |
| 12 | PH0-OSC_IN | bidirectional | 5 V-tolerant I/O; alternate function EVENTOUT; additional function OSC_IN (4 to 48 MHz crystal oscillator input). |
| 13 | PH1-OSC_OUT | bidirectional | 5 V-tolerant I/O; alternate function EVENTOUT; additional function OSC_OUT (4 to 48 MHz crystal oscillator output). |
| 14 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor. |
| 15 | PC0 | bidirectional | 5 V-tolerant Fm+ capable I/O with analog switch function supplied by VDDA; alternate functions LPTIM1_IN1, I2C4_SCL, I2C3_SCL, LPUART1_RX, LPTIM2_IN1, EVENTOUT; additional function ADC1_IN1. |
| 16 | PC1 | bidirectional | 5 V-tolerant Fm+ capable I/O with analog switch function supplied by VDDA; alternate functions TRACED0, LPTIM1_OUT, I2C4_SDA, I2C3_SDA, LPUART1_TX, EVENTOUT; additional function ADC1_IN2. |
| 17 | PC2 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate functions LPTIM1_IN2, SPI2_MISO, DFSDM1_CKOUT, EVENTOUT; additional function ADC1_IN3. |
| 18 | PC3 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate functions LPTIM1_ETR, SPI2_MOSI, SAI1_SD_A, LPTIM2_ETR, EVENTOUT; additional function ADC1_IN4. |
| 19 | VSSA | power_in | Analog ground pin. |
| 20 | VREF- | power_in | Negative ADC reference voltage, equal to VSSA. |
| 21 | VREF+ | power_in | Positive ADC reference voltage: 2 V to VDDA when VDDA is at least 2 V, and equal to VDDA when VDDA is below 2 V; also VREFBUF_OUT. |
| 22 | VDDA | power_in | Analog supply: 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 with analog switch function supplied by VDDA; alternate functions TIM2_CH1, USART2_CTS, UART4_TX, 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 with analog switch function supplied by VDDA; alternate functions TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE, UART4_RX, TIM15_CH1N, EVENTOUT; additional functions OPAMP1_VINM, COMP1_INP, ADC1_IN6. |
| 25 | PA2 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate functions TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS, COMP2_OUT, TIM15_CH1, EVENTOUT; additional functions COMP2_INM, ADC1_IN7, WKUP4, LSCO. |
| 26 | PA3 | bidirectional | 3.6 V-tolerant (TT) I/O with analog switch function supplied by VDDA; alternate functions TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK, SAI1_MCLK_A, TIM15_CH2, EVENTOUT; additional functions OPAMP1_VOUT, COMP2_INP, ADC1_IN8. |
| 27 | VSS | power_in | Ground pin. |
| 28 | VDD | power_in | Standard digital supply pin, 1.71 V to 3.6 V. |
| 29 | PA4 | bidirectional | 3.6 V-tolerant (TT) I/O with analog switch function 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. |
| 30 | PA5 | bidirectional | 3.6 V-tolerant (TT) I/O with analog switch function supplied by VDDA; alternate functions TIM2_CH1, TIM2_ETR, SPI1_SCK, DFSDM1_CKOUT, LPTIM2_ETR, EVENTOUT; additional functions COMP1_INM, COMP2_INM, ADC1_IN10. |
| 31 | PA6 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate functions TIM1_BKIN, TIM3_CH1, SPI1_MISO, COMP1_OUT, USART3_CTS, LPUART1_CTS, QUADSPI_BK1_IO3, TIM1_BKIN_COMP2, TIM16_CH1, EVENTOUT; additional function ADC1_IN11. |
| 32 | PA7 | bidirectional | 5 V-tolerant Fm+ capable I/O with analog switch function supplied by VDDA; alternate functions TIM1_CH1N, TIM3_CH2, I2C3_SCL, SPI1_MOSI, DFSDM1_DATIN0, QUADSPI_BK1_IO2, COMP2_OUT, EVENTOUT; additional function ADC1_IN12. |
| 33 | PC4 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate function USART3_TX and EVENTOUT; additional functions COMP1_INM, ADC1_IN13. |
| 34 | PC5 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate function USART3_RX and EVENTOUT; additional functions COMP1_INP, ADC1_IN14, WKUP5. |
| 35 | PB0 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate functions TIM1_CH2N, TIM3_CH3, SPI1_NSS, DFSDM1_CKIN0, USART3_CK, QUADSPI_BK1_IO1, COMP1_OUT, SAI1_EXTCLK, EVENTOUT; additional function ADC1_IN15. |
| 36 | PB1 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate functions TIM1_CH3N, TIM3_CH4, DFSDM1_DATIN0, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0, LPTIM2_IN1, EVENTOUT; additional functions COMP1_INM, ADC1_IN16. |
| 37 | PB2 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; alternate functions RTC_OUT, LPTIM1_OUT, I2C3_SMBA, DFSDM1_CKIN0, EVENTOUT; additional function COMP1_INP. |
| 38 | PE7 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_ETR, DFSDM1_DATIN2, SAI1_SD_B, EVENTOUT. |
| 39 | PE8 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH1N, DFSDM1_CKIN2, SAI1_SCK_B, EVENTOUT. |
| 40 | PE9 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH1, DFSDM1_CKOUT, SAI1_FS_B, EVENTOUT. |
| 41 | PE10 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH2N, TSC_G5_IO1, QUADSPI_CLK, SAI1_MCLK_B, EVENTOUT. |
| 42 | PE11 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH2, TSC_G5_IO2, QUADSPI_BK1_NCS, EVENTOUT. |
| 43 | PE12 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH3N, SPI1_NSS, TSC_G5_IO3, QUADSPI_BK1_IO0, EVENTOUT. |
| 44 | PE13 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH3, SPI1_SCK, TSC_G5_IO4, QUADSPI_BK1_IO1, EVENTOUT. |
| 45 | PE14 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH4, TIM1_BKIN2, TIM1_BKIN2_COMP2, SPI1_MISO, QUADSPI_BK1_IO2, EVENTOUT. |
| 46 | PE15 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_BKIN, TIM1_BKIN_COMP1, SPI1_MOSI, QUADSPI_BK1_IO3, EVENTOUT. |
| 47 | PB10 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions TIM2_CH3, I2C4_SCL, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, TSC_SYNC, QUADSPI_CLK, COMP1_OUT, SAI1_SCK_A, EVENTOUT. |
| 48 | PB11 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions TIM2_CH4, I2C4_SDA, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS, COMP2_OUT, EVENTOUT. |
| 49 | VSS | power_in | Ground pin. |
| 50 | VDD | power_in | Standard digital supply pin, 1.71 V to 3.6 V. |
| 51 | PB12 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_BKIN, TIM1_BKIN_COMP2, I2C2_SMBA, SPI2_NSS, DFSDM1_DATIN1, USART3_CK, LPUART1_RTS_DE, TSC_G1_IO1, CAN1_RX, SAI1_FS_A, TIM15_BKIN, EVENTOUT. |
| 52 | PB13 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions TIM1_CH1N, I2C2_SCL, SPI2_SCK, DFSDM1_CKIN1, USART3_CTS, LPUART1_CTS, TSC_G1_IO2, CAN1_TX, SAI1_SCK_A, TIM15_CH1N, EVENTOUT. |
| 53 | PB14 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions TIM1_CH2N, I2C2_SDA, SPI2_MISO, DFSDM1_DATIN2, USART3_RTS_DE, TSC_G1_IO3, SAI1_MCLK_A, TIM15_CH1, EVENTOUT. |
| 54 | PB15 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM1_CH3N, SPI2_MOSI, DFSDM1_CKIN2, TSC_G1_IO4, SAI1_SD_A, TIM15_CH2, EVENTOUT; additional function RTC_REFIN. |
| 55 | PD8 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions USART3_TX, EVENTOUT. |
| 56 | PD9 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions USART3_RX, EVENTOUT. |
| 57 | PD10 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions USART3_CK, TSC_G6_IO1, EVENTOUT. |
| 58 | PD11 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions I2C4_SMBA, USART3_CTS, TSC_G6_IO2, LPTIM2_ETR, EVENTOUT. |
| 59 | PD12 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions I2C4_SCL, USART3_RTS_DE, TSC_G6_IO3, LPTIM2_IN1, EVENTOUT. |
| 60 | PD13 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions I2C4_SDA, TSC_G6_IO4, LPTIM2_OUT, EVENTOUT. |
| 61 | PD14 | bidirectional | 5 V-tolerant (FT) I/O; alternate function EVENTOUT. |
| 62 | PD15 | bidirectional | 5 V-tolerant (FT) I/O; alternate function EVENTOUT. |
| 63 | PC6 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM3_CH1, DFSDM1_CKIN3, TSC_G4_IO1, SDMMC1_D6, EVENTOUT. |
| 64 | PC7 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM3_CH2, DFSDM1_DATIN3, TSC_G4_IO2, SDMMC1_D7, EVENTOUT. |
| 65 | PC8 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM3_CH3, TSC_G4_IO3, SDMMC1_D0, EVENTOUT. |
| 66 | PC9 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM3_CH4, TSC_G4_IO4, USBNOE, SDMMC1_D1, EVENTOUT. |
| 67 | PA8 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions MCO, TIM1_CH1, DFSDM1_CKIN1, USART1_CK, SAI1_SCK_A, LPTIM2_OUT, EVENTOUT. |
| 68 | PA9 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions TIM1_CH2, I2C1_SCL, DFSDM1_DATIN1, USART1_TX, SAI1_FS_A, TIM15_BKIN, EVENTOUT. |
| 69 | PA10 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions TIM1_CH3, I2C1_SDA, USART1_RX, USBCRS_SYNC, SAI1_SD_A, EVENTOUT. |
| 70 | PA11 | bidirectional | 5 V-tolerant I/O with USB function supplied by VDDUSB; alternate functions TIM1_CH4, TIM1_BKIN2, SPI1_MISO, COMP1_OUT, USART1_CTS, CAN1_RX, USBDM, TIM1_BKIN2_COMP1, EVENTOUT. |
| 71 | PA12 | bidirectional | 5 V-tolerant Fm+ capable I/O with USB function supplied by VDDUSB; alternate functions TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX, USBDP, EVENTOUT. |
| 72 | PA13 | bidirectional | 5 V-tolerant (FT) I/O; after reset it is the JTMS/SWDAT debug function with internal pull-up enabled; alternate functions IR_OUT, USBNOE, SAI1_SD_B, EVENTOUT. |
| 73 | VDDUSB | power_in | USB supply, 3.0 V to 3.6 V when USB is used (may be 0 V when USB is not used). |
| 74 | VSS | power_in | Ground pin. |
| 75 | VDD | power_in | Standard digital supply pin, 1.71 V to 3.6 V. |
| 76 | PA14 | bidirectional | 5 V-tolerant (FT) I/O; after reset it is the JTCK/SWCLK debug function with internal pull-down enabled; alternate functions LPTIM1_OUT, I2C1_SMBA, I2C4_SMBA, SAI1_FS_B, EVENTOUT. |
| 77 | PA15 | bidirectional | 5 V-tolerant (FT) I/O; after reset it is the JTDI debug function with internal pull-up enabled; alternate functions TIM2_CH1, TIM2_ETR, USART2_RX, SPI1_NSS, SPI3_NSS, USART3_RTS_DE, UART4_RTS_DE, TSC_G3_IO1, EVENTOUT. |
| 78 | PC10 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TRACED1, SPI3_SCK, USART3_TX, UART4_TX, TSC_G3_IO2, SDMMC1_D2, EVENTOUT. |
| 79 | PC11 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions SPI3_MISO, USART3_RX, UART4_RX, TSC_G3_IO3, SDMMC1_D3, EVENTOUT. |
| 80 | PC12 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TRACED3, SPI3_MOSI, USART3_CK, TSC_G3_IO4, SDMMC1_CK, EVENTOUT. |
| 81 | PD0 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions SPI2_NSS, CAN1_RX, EVENTOUT. |
| 82 | PD1 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions SPI2_SCK, CAN1_TX, EVENTOUT. |
| 83 | PD2 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TRACED2, TIM3_ETR, USART3_RTS_DE, TSC_SYNC, SDMMC1_CMD, EVENTOUT. |
| 84 | PD3 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions SPI2_MISO, DFSDM1_DATIN0, USART2_CTS, QUADSPI_BK2_NCS, EVENTOUT. |
| 85 | PD4 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions SPI2_MOSI, DFSDM1_CKIN0, USART2_RTS_DE, QUADSPI_BK2_IO0, EVENTOUT. |
| 86 | PD5 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions USART2_TX, QUADSPI_BK2_IO1, EVENTOUT. |
| 87 | PD6 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions DFSDM1_DATIN1, USART2_RX, QUADSPI_BK2_IO2, SAI1_SD_A, EVENTOUT. |
| 88 | PD7 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions DFSDM1_CKIN1, USART2_CK, QUADSPI_BK2_IO3, EVENTOUT. |
| 89 | PB3 | bidirectional | 5 V-tolerant I/O with analog switch function supplied by VDDA; after reset it is the JTDO/TRACESWO debug function; alternate functions TIM2_CH2, SPI1_SCK, SPI3_SCK, USART1_RTS_DE, SAI1_SCK_B, EVENTOUT; additional function COMP2_INM. |
| 90 | PB4 | bidirectional | 5 V-tolerant Fm+ capable I/O with analog switch function supplied by VDDA; after reset it is the NJTRST debug function with internal pull-up enabled; alternate functions TIM3_CH1, I2C3_SDA, SPI1_MISO, SPI3_MISO, USART1_CTS, TSC_G2_IO1, SAI1_MCLK_B, EVENTOUT; additional function COMP2_INP. |
| 91 | PB5 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions LPTIM1_IN1, TIM3_CH2, CAN1_RX, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART1_CK, TSC_G2_IO2, COMP2_OUT, SAI1_SD_B, TIM16_BKIN, EVENTOUT. |
| 92 | PB6 | bidirectional | 5 V-tolerant Fm+ capable I/O with analog switch function supplied by VDDA; alternate functions LPTIM1_ETR, I2C1_SCL, I2C4_SCL, USART1_TX, CAN1_TX, TSC_G2_IO3, SAI1_FS_B, TIM16_CH1N, EVENTOUT; additional function COMP2_INP. |
| 93 | PB7 | bidirectional | 5 V-tolerant Fm+ capable I/O with analog switch function supplied by VDDA; alternate functions LPTIM1_IN2, I2C1_SDA, I2C4_SDA, USART1_RX, UART4_CTS, TSC_G2_IO4, EVENTOUT; additional functions COMP2_INM, PVD_IN. |
| 94 | PH3-BOOT0 | bidirectional | Boot pin BOOT0 with alternate function EVENTOUT; the datasheet gives no FT/TT I/O structure for this pin. |
| 95 | PB8 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions I2C1_SCL, CAN1_RX, SDMMC1_D4, SAI1_MCLK_A, TIM16_CH1, EVENTOUT. |
| 96 | PB9 | bidirectional | 5 V-tolerant Fm+ capable I/O; alternate functions IR_OUT, I2C1_SDA, SPI2_NSS, CAN1_TX, SDMMC1_D5, SAI1_FS_A, EVENTOUT. |
| 97 | PE0 | bidirectional | 5 V-tolerant (FT) I/O; alternate functions TIM16_CH1, EVENTOUT. |
| 98 | PE1 | bidirectional | 5 V-tolerant (FT) I/O; alternate function EVENTOUT. |
| 99 | VSS | power_in | Ground pin. |
| 100 | VDD | power_in | Standard digital supply pin, 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:
STM32L462VET6 - Footprint:
Package_QFP:LQFP-100_14x14mm_P0.5mm - 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)
- 3D model files:
stm32l462vet6-etched.step/stm32l462vet6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32l462vet6.step/stm32l462vet6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (210 pp, sha256
3a1333ab41d6e9a6, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).