STM32L431RCT6TR

@@ -0,0 +1,112 @@+# STM32L431RCT6TR++**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)++STM32L431RCT6TR from STMicroelectronics, in a LQFP-64(10x10). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VBAT | power_in | Backup battery supply for RTC and 32x32-bit backup registers. Typical 1.55 V to 3.6 V; ~200 nA in VBAT mode. |+| 2 | PC13 | bidirectional | GPIO PC13 (FT). Alt: EVENTOUT. Additional: RTC_TAMP1, RTC_TS, RTC_OUT, WKUP2. |+| 3 | PC14-OSC32_IN | bidirectional | GPIO PC14 / LSE 32 kHz oscillator input (OSC32_IN). Muxed via RCC. |+| 4 | PC15-OSC32_OUT | bidirectional | GPIO PC15 / LSE 32 kHz oscillator output (OSC32_OUT). |+| 5 | PH0-OSC_IN | bidirectional | GPIO PH0 / HSE crystal oscillator input (OSC_IN). |+| 6 | PH1-OSC_OUT | bidirectional | GPIO PH1 / HSE crystal oscillator output (OSC_OUT). |+| 7 | NRST | bidirectional | Bidirectional reset pin, active low. Internal pull-up; driven low by MCU on internal reset sources. |+| 8 | PC0 | bidirectional | GPIO PC0 (FT_fa). Alt: LPTIM1_IN1, I2C3_SCL, LPUART1_RX, LPTIM2_IN1, EVENTOUT. Additional: ADC1_IN1. |+| 9 | PC1 | bidirectional | GPIO PC1 (FT_fa). Alt: LPTIM1_OUT, I2C3_SDA, LPUART1_TX, EVENTOUT. Additional: ADC1_IN2. |+| 10 | PC2 | bidirectional | GPIO PC2 (FT_a). Alt: LPTIM1_IN2, SPI2_MISO, EVENTOUT. Additional: ADC1_IN3. |+| 11 | PC3 | bidirectional | GPIO PC3 (FT_a). Alt: LPTIM1_ETR, SPI2_MOSI, SAI1_SD_A, LPTIM2_ETR, EVENTOUT. Additional: ADC1_IN4. |+| 12 | VSSA/VREF- | power_in | Analog ground and negative ADC/DAC reference (tied together on this package). |+| 13 | VDDA/VREF+ | power_in | Analog supply and positive ADC/DAC reference input, 1.62 V to 3.6 V. |+| 14 | PA0 | bidirectional | GPIO PA0 (FT_a). Alt: TIM2_CH1, USART2_CTS, COMP1_OUT, SAI1_EXTCLK, TIM2_ETR, EVENTOUT. Additional: OPAMP1_VINP, COMP1_INM, ADC1_IN5, RTC_TAMP2, WKUP1. |+| 15 | PA1 | bidirectional | GPIO PA1 (FT_a). Alt: TIM2_CH2, I2C1_SMBA, SPI1_SCK, USART2_RTS_DE, TIM15_CH1N, EVENTOUT. Additional: OPAMP1_VINM, COMP1_INP, ADC1_IN6. |+| 16 | PA2 | bidirectional | GPIO PA2 (FT_a). Alt: TIM2_CH3, USART2_TX, LPUART1_TX, QUADSPI_BK1_NCS, COMP2_OUT, TIM15_CH1, EVENTOUT. Additional: COMP2_INM, ADC1_IN7, WKUP4, LSCO. |+| 17 | PA3 | bidirectional | GPIO PA3 (TT_a). Alt: TIM2_CH4, USART2_RX, LPUART1_RX, QUADSPI_CLK, SAI1_MCLK_A, TIM15_CH2, EVENTOUT. Additional: OPAMP1_VOUT, COMP2_INP, ADC1_IN8. |+| 18 | VSS | power_in | Digital ground. |+| 19 | VDD | power_in | Digital supply, 1.71 V to 3.6 V. |+| 20 | PA4 | bidirectional | GPIO PA4 (TT_a). Alt: SPI1_NSS, SPI3_NSS, USART2_CK, SAI1_FS_B, LPTIM2_OUT, EVENTOUT. Additional: COMP1_INM, COMP2_INM, ADC1_IN9, DAC1_OUT1. |+| 21 | PA5 | bidirectional | GPIO PA5 (TT_a). Alt: TIM2_CH1, TIM2_ETR, SPI1_SCK, LPTIM2_ETR, EVENTOUT. Additional: COMP1_INM, COMP2_INM, ADC1_IN10, DAC1_OUT2. |+| 22 | PA6 | bidirectional | GPIO PA6 (FT_a). Alt: TIM1_BKIN, SPI1_MISO, COMP1_OUT, USART3_CTS, LPUART1_CTS, QUADSPI_BK1_IO3, TIM16_CH1, EVENTOUT. Additional: ADC1_IN11. |+| 23 | PA7 | bidirectional | GPIO PA7 (FT_a). Alt: TIM1_CH1N, SPI1_MOSI, QUADSPI_BK1_IO2, TIM17_CH1, EVENTOUT. Additional: COMP2_INP, ADC1_IN12. |+| 24 | PC4 | bidirectional | GPIO PC4 (FT_a). Alt: USART3_TX, EVENTOUT. Additional: ADC1_IN13. |+| 25 | PC5 | bidirectional | GPIO PC5 (FT_a). Alt: USART3_RX, EVENTOUT. Additional: WKUP5, ADC1_IN14. |+| 26 | PB0 | bidirectional | GPIO PB0 (FT_a). Alt: TIM1_CH2N, SPI1_NSS, USART3_CK, QUADSPI_BK1_IO1, SAI1_EXTCLK, COMP1_OUT, EVENTOUT. Additional: ADC1_IN15. |+| 27 | PB1 | bidirectional | GPIO PB1 (FT_a). Alt: TIM1_CH3N, USART3_RTS_DE, LPUART1_RTS_DE, QUADSPI_BK1_IO0, LPTIM2_IN1, EVENTOUT. Additional: ADC1_IN16. |+| 28 | PB2 | bidirectional | GPIO PB2 (FT). Alt: RTC_OUT, LPTIM1_OUT, I2C3_SMBA, EVENTOUT. |+| 29 | PB10 | bidirectional | GPIO PB10 (FT_f). Alt: TIM2_CH3, I2C2_SCL, SPI2_SCK, USART3_TX, LPUART1_RX, QUADSPI_CLK, SAI1_SCK_A, COMP1_OUT, EVENTOUT. |+| 30 | PB11 | bidirectional | GPIO PB11 (FT_f). Alt: TIM2_CH4, I2C2_SDA, USART3_RX, LPUART1_TX, QUADSPI_BK1_NCS, COMP2_OUT, EVENTOUT. |+| 31 | VSS | power_in | Digital ground. |+| 32 | VDD | power_in | Digital supply, 1.71 V to 3.6 V. |+| 33 | PB12 | bidirectional | GPIO PB12 (FT_fa). Alt: TIM1_BKIN, SPI2_NSS, USART3_CK, LPUART1_RTS_DE, SAI1_FS_A, TSC_G1_IO1, EVENTOUT. Additional: COMP2_INP. |+| 34 | PB13 | bidirectional | GPIO PB13 (FT_fa). Alt: TIM1_CH1N, I2C2_SCL, SPI2_SCK, USART3_CTS, LPUART1_CTS, SAI1_SCK_A, TSC_G1_IO2, EVENTOUT. Additional: COMP2_INM. |+| 35 | PB14 | bidirectional | GPIO PB14 (FT_fa). Alt: TIM1_CH2N, I2C2_SDA, SPI2_MISO, USART3_RTS_DE, SAI1_MCLK_A, TSC_G1_IO3, TIM15_CH1, EVENTOUT. Additional: COMP2_INP. |+| 36 | PB15 | bidirectional | GPIO PB15 (FT_fa). Alt: RTC_REFIN, TIM1_CH3N, SPI2_MOSI, SAI1_SD_A, TSC_G1_IO4, TIM15_CH2, EVENTOUT. Additional: COMP2_INM. |+| 37 | PC6 | bidirectional | GPIO PC6 (FT). Alt: TSC_G4_IO1, EVENTOUT. |+| 38 | PC7 | bidirectional | GPIO PC7 (FT). Alt: TSC_G4_IO2, EVENTOUT. |+| 39 | PC8 | bidirectional | GPIO PC8 (FT). Alt: TSC_G4_IO3, EVENTOUT. |+| 40 | PC9 | bidirectional | GPIO PC9 (FT). Alt: TIM8_BKIN2, I2C3_SDA, SAI1_D_A, TSC_G4_IO4, EVENTOUT. |+| 41 | PA8 | bidirectional | GPIO PA8 (FT). Alt: MCO, TIM1_CH1, USART1_CK, SAI1_SCK_A, LPTIM2_OUT, SWPMI1_IO1, EVENTOUT. |+| 42 | PA9 | bidirectional | GPIO PA9 (FT_f). Alt: TIM1_CH2, I2C1_SCL, USART1_TX, SAI1_FS_A, TIM15_BKIN, EVENTOUT. |+| 43 | PA10 | bidirectional | GPIO PA10 (FT_f). Alt: TIM1_CH3, I2C1_SDA, USART1_RX, SAI1_SD_A, EVENTOUT. |+| 44 | PA11 | bidirectional | GPIO PA11 (FT). Alt: TIM1_CH4, TIM1_BKIN2, SPI1_MISO, USART1_CTS, CAN1_RX, EVENTOUT. |+| 45 | PA12 | bidirectional | GPIO PA12 (FT). Alt: TIM1_ETR, SPI1_MOSI, USART1_RTS_DE, CAN1_TX, EVENTOUT. |+| 46 | PA13 | bidirectional | GPIO PA13 (FT). Default SWDIO after reset. Alt: JTMS-SWDIO, IR_OUT, SWPMI1_TX, EVENTOUT. |+| 47 | VSS | power_in | Digital ground. |+| 48 | VDD | power_in | Digital supply, 1.71 V to 3.6 V. |+| 49 | PA14 | bidirectional | GPIO PA14 (FT). Default SWCLK after reset. Alt: JTCK-SWCLK, LPTIM1_OUT, SWPMI1_RX, EVENTOUT. |+| 50 | PA15 | bidirectional | GPIO PA15 (FT). Default JTDI after reset. Alt: JTDI, TIM2_CH1, TIM2_ETR, USART2_RX, USART3_RTS_DE, SPI1_NSS, SPI3_NSS, TSC_G3_IO1, SWPMI1_SUSPEND, EVENTOUT. |+| 51 | PC10 | bidirectional | GPIO PC10 (FT). Alt: SPI3_SCK, USART3_TX, LPUART1_TX, SAI1_D_A, TSC_G3_IO2, EVENTOUT. |+| 52 | PC11 | bidirectional | GPIO PC11 (FT). Alt: SPI3_MISO, USART3_RX, LPUART1_RX, TSC_G3_IO3, EVENTOUT. |+| 53 | PC12 | bidirectional | GPIO PC12 (FT). Alt: SPI3_MOSI, USART3_CK, SAI1_D_A, TSC_G3_IO4, EVENTOUT. |+| 54 | PD2 | bidirectional | GPIO PD2 (FT). Alt: TIM3_ETR, USART3_RTS_DE, EVENTOUT. |+| 55 | PB3 | bidirectional | GPIO PB3 (FT). Default JTDO/TRACESWO after reset. Alt: JTDO-TRACESWO, TIM2_CH2, SPI1_SCK, SPI3_SCK, USART1_RTS_DE, SAI1_SCK_B, EVENTOUT. |+| 56 | PB4 | bidirectional | GPIO PB4 (FT). Default NJTRST after reset. Alt: NJTRST, TIM3_CH1, SPI1_MISO, SPI3_MISO, USART1_CTS, TSC_G2_IO1, SAI1_MCLK_B, TIM17_BKIN, EVENTOUT. |+| 57 | PB5 | bidirectional | GPIO PB5 (FT). Alt: LPTIM1_IN1, TIM3_CH2, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, USART1_CK, CAN2_RX, TSC_G2_IO2, SAI1_SD_B, TIM16_BKIN, EVENTOUT. |+| 58 | PB6 | bidirectional | GPIO PB6 (FT_f). Alt: LPTIM1_ETR, TIM4_CH1, I2C1_SCL, USART1_TX, CAN2_TX, TSC_G2_IO3, SAI1_FS_B, TIM16_CH1N, EVENTOUT. |+| 59 | PB7 | bidirectional | GPIO PB7 (FT_f). Alt: LPTIM1_IN2, TIM4_CH2, I2C1_SDA, USART1_RX, TSC_G2_IO4, TIM17_CH1N, EVENTOUT. |+| 60 | PH3-BOOT0 | bidirectional | GPIO PH3 muxed with BOOT0 boot-mode select input. Sampled at reset to choose the boot source (Main Flash, System memory bootloader, SRAM). |+| 61 | PB8 | bidirectional | GPIO PB8 (FT_f). Alt: TIM4_CH3, TIM16_CH1, I2C1_SCL, CAN1_RX, SAI1_MCLK_A, SDMMC1_D4, EVENTOUT. |+| 62 | PB9 | bidirectional | GPIO PB9 (FT_f). Alt: TIM4_CH4, TIM17_CH1, I2C1_SDA, SPI2_NSS, CAN1_TX, IR_OUT, SAI1_FS_A, SDMMC1_D5, EVENTOUT. |+| 63 | VSS | power_in | Digital ground. |+| 64 | VDD | power_in | Digital supply, 1.71 V to 3.6 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | LQFP-64(10x10) |+| Category | MCU |+| Pins | 64 |++## Ordering variants++- `STM32L431RCT6TRRCT6`+- `STM32L431RCT6TRRCT6TR`+- `STM32L431RCT6TRRCY6TR`+- `STM32L431RCT6TRVCT6`+- `STM32L431RCT6TRVCI6`+- `STM32L431RCT6TRCCT6`+- `STM32L431RCT6TRCCU6`+- `STM32L431RCT6TRCCY6TR`+- `STM32L431RCT6TRKCU6`+- `STM32L431RCT6TRRCI6`++## CAD (KiCad official)++- Symbol: `STM32L431RCT6TR`+- Footprint: `Package_QFP:LQFP-64_10x10mm_P0.5mm`+- 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/stm32l431rct6tr.pdf) (208 pp, sha256 `71963de3cb899f8f`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/stm32l431rct6tr-datasheet.pdf)