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STM32G431KBU3
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
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README.mdadded+69@@ -0,0 +1,69 @@+# STM32G431KBU3++**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · UFQFPN-32(5x5)++STM32G431KBU3 from STMicroelectronics, in a UFQFPN-32(5x5). 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 | VDD | power_in | Main power supply voltage input, 1.71 V to 3.6 V |+| 2 | PF0-OSC_IN | bidirectional | 5V tolerant I/O pin with analog switch driven by VDDA, oscillator input for 4-48 MHz crystal or external clock source |+| 3 | PF1-OSC_OUT | bidirectional | 3.6V tolerant I/O pin with analog switch driven by VDDA, oscillator output for 4-48 MHz crystal |+| 4 | PG10-NRST | bidirectional | System reset input pin with embedded weak pull-up resistor, 5V tolerant I/O |+| 5 | PA0 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC1/ADC2 input channel 1, COMP1_INM/COMP3_INP, RTC_TAMP2, WKUP1 |+| 6 | PA1 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC1/ADC2 input channel 2, COMP1_INP/OPAMP1_VINP/OPAMP3_VINP |+| 7 | PA2 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC1 input channel 3, COMP2_INM/OPAMP1_VOUT, WKUP4/LSCO |+| 8 | PA3 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC1 input channel 4, COMP2_INP/OPAMP1_VINM/OPAMP1_VINP |+| 9 | PA4 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC2 input channel 17, DAC1_OUT1, COMP1_INM |+| 10 | PA5 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC2 input channel 13, DAC1_OUT2, COMP2_INM/OPAMP2_VINM |+| 11 | PA6 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC2 input channel 3, OPAMP2_VOUT |+| 12 | PA7 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC2 input channel 4, COMP2_INP/OPAMP1_VINP/OPAMP2_VINP |+| 13 | PB0 | bidirectional | 3.6V tolerant I/O pin with analog switch, ADC1 input channel 15, COMP4_INP/OPAMP2_VINP/OPAMP3_VINP |+| 14 | VSSA | power_in | Analog ground pin |+| 15 | VDDA | power_in | Analog power supply input, 1.62 V to 3.6 V, shares reference with VREFBUF_OUT |+| 16 | VSS | power_in | Ground pin |+| 17 | VDD | power_in | Main power supply voltage input, 1.71 V to 3.6 V |+| 18 | PA8 | bidirectional | 5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, MCO/I2C3_SCL/I2C2_SDA/TIM1_CH1 |+| 19 | PA9 | bidirectional | 5V tolerant I/O pin with dead battery function for USB Type-C PD, I2C3_SMBA/I2C2_SCL/TIM1_CH2 |+| 20 | PA10 | bidirectional | 5V tolerant I/O pin with dead battery function for USB Type-C PD and analog switch, USB_CRS_SYNC/TIM1_CH3 |+| 21 | PA11 | bidirectional | 5V tolerant I/O pin with USB function (USB_DM), SPI2_MOSI/TIM1_CH1N/COMP1_OUT/FDCAN1_RX |+| 22 | PA12 | bidirectional | 5V tolerant I/O pin with USB function (USB_DP), TIM16_CH1/I2SCKIN/TIM1_CH2N/COMP2_OUT/FDCAN1_TX |+| 23 | PA13 | bidirectional | 5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, SWDIO-JTMS/TIM16_CH1N/I2C1_SCL |+| 24 | PA14 | bidirectional | 5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, SWCLK-JTCK/LPTIM1_OUT/I2C1_SDA |+| 25 | PA15 | bidirectional | 5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, JTDI/TIM2_CH1/I2C1_SCL/SPI1_NSS |+| 26 | PB3 | bidirectional | 5V tolerant I/O pin, JTDO-TRACESWO/TIM2_CH2/SPI1_SCK/USART2_TX |+| 27 | PB4 | bidirectional | 5V tolerant I/O pin with USB Type-C PD capability (UCPD1_CC2), JTRST/TIM16_CH1/SPI1_MISO |+| 28 | PB5 | bidirectional | 5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, TIM16_BKIN/TIM3_CH2/SPI1_MOSI |+| 29 | PB6 | bidirectional | 5V tolerant I/O pin with USB Type-C PD capability (UCPD1_CC1), TIM16_CH1N/TIM4_CH1/USART1_TX |+| 30 | PB7 | bidirectional | 5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, TIM17_CH1N/TIM4_CH2/I2C1_SDA/USART1_RX, PVD_IN |+| 31 | PB8-BOOT0 | bidirectional | 5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, boot mode selection, TIM16_CH1/I2C1_SCL/USART3_RX |+| 32 | VSS | power_in | Ground pin |+| 33 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | UFQFPN-32(5x5) |+| Category | Embedded Processors & Controllers |+| Pins | 33 |++## CAD (KiCad official)++- Symbol: `STM32G431KBU3`+- Footprint: `Package_DFN_QFN:UFQFPN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm`+- 3D model: UFQFPN-32(5x5) (KiCad packages3D, STEP)+- 3D model files: `stm32g431kbu3-etched.step` / `stm32g431kbu3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32g431kbu3.step` / `stm32g431kbu3.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/8588923589898735616) (197 pp, sha256 `caaa126a00ab9e06`, retrieved 2026-10-01, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, 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/stm32g431kbu3-datasheet.pdf)
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"model_3d_plain": "stm32g431kbu3.glb",+ "model_3d_step": "stm32g431kbu3-etched.step",+ "model_3d_step_plain": "stm32g431kbu3.step",+ "lbr": "stm32g431kbu3.lbr"+ },+ "distributor_links": {+ "lcsc": "C1341901",+ "digikey": "STM32G431KBU3-ND",+ "mouser": "511-STM32G431KBU3"+ },+ "distributor_check": {+ "checked_at": "2026-10-01T17:59:58Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "STM32G431KBU3-ND",+ "status": "found"+ },+ "mouser": {+ "pn": "511-STM32G431KBU3",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VDD",+ "type": "power_in",+ "description": "Main power supply voltage input, 1.71 V to 3.6 V"+ },+ {+ "number": "2",+ "name": "PF0-OSC_IN",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with analog switch driven by VDDA, oscillator input for 4-48 MHz crystal or external clock source"+ },+ {+ "number": "3",+ "name": "PF1-OSC_OUT",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch driven by VDDA, oscillator output for 4-48 MHz crystal"+ },+ {+ "number": "4",+ "name": "PG10-NRST",+ "type": "bidirectional",+ "description": "System reset input pin with embedded weak pull-up resistor, 5V tolerant I/O"+ },+ {+ "number": "5",+ "name": "PA0",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC1/ADC2 input channel 1, COMP1_INM/COMP3_INP, RTC_TAMP2, WKUP1"+ },+ {+ "number": "6",+ "name": "PA1",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC1/ADC2 input channel 2, COMP1_INP/OPAMP1_VINP/OPAMP3_VINP"+ },+ {+ "number": "7",+ "name": "PA2",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC1 input channel 3, COMP2_INM/OPAMP1_VOUT, WKUP4/LSCO"+ },+ {+ "number": "8",+ "name": "PA3",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC1 input channel 4, COMP2_INP/OPAMP1_VINM/OPAMP1_VINP"+ },+ {+ "number": "9",+ "name": "PA4",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 17, DAC1_OUT1, COMP1_INM"+ },+ {+ "number": "10",+ "name": "PA5",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 13, DAC1_OUT2, COMP2_INM/OPAMP2_VINM"+ },+ {+ "number": "11",+ "name": "PA6",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 3, OPAMP2_VOUT"+ },+ {+ "number": "12",+ "name": "PA7",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC2 input channel 4, COMP2_INP/OPAMP1_VINP/OPAMP2_VINP"+ },+ {+ "number": "13",+ "name": "PB0",+ "type": "bidirectional",+ "description": "3.6V tolerant I/O pin with analog switch, ADC1 input channel 15, COMP4_INP/OPAMP2_VINP/OPAMP3_VINP"+ },+ {+ "number": "14",+ "name": "VSSA",+ "type": "power_in",+ "description": "Analog ground pin"+ },+ {+ "number": "15",+ "name": "VDDA",+ "type": "power_in",+ "description": "Analog power supply input, 1.62 V to 3.6 V, shares reference with VREFBUF_OUT"+ },+ {+ "number": "16",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground pin"+ },+ {+ "number": "17",+ "name": "VDD",+ "type": "power_in",+ "description": "Main power supply voltage input, 1.71 V to 3.6 V"+ },+ {+ "number": "18",+ "name": "PA8",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, MCO/I2C3_SCL/I2C2_SDA/TIM1_CH1"+ },+ {+ "number": "19",+ "name": "PA9",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with dead battery function for USB Type-C PD, I2C3_SMBA/I2C2_SCL/TIM1_CH2"+ },+ {+ "number": "20",+ "name": "PA10",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with dead battery function for USB Type-C PD and analog switch, USB_CRS_SYNC/TIM1_CH3"+ },+ {+ "number": "21",+ "name": "PA11",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with USB function (USB_DM), SPI2_MOSI/TIM1_CH1N/COMP1_OUT/FDCAN1_RX"+ },+ {+ "number": "22",+ "name": "PA12",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with USB function (USB_DP), TIM16_CH1/I2SCKIN/TIM1_CH2N/COMP2_OUT/FDCAN1_TX"+ },+ {+ "number": "23",+ "name": "PA13",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, SWDIO-JTMS/TIM16_CH1N/I2C1_SCL"+ },+ {+ "number": "24",+ "name": "PA14",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, SWCLK-JTCK/LPTIM1_OUT/I2C1_SDA"+ },+ {+ "number": "25",+ "name": "PA15",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, JTDI/TIM2_CH1/I2C1_SCL/SPI1_NSS"+ },+ {+ "number": "26",+ "name": "PB3",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin, JTDO-TRACESWO/TIM2_CH2/SPI1_SCK/USART2_TX"+ },+ {+ "number": "27",+ "name": "PB4",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with USB Type-C PD capability (UCPD1_CC2), JTRST/TIM16_CH1/SPI1_MISO"+ },+ {+ "number": "28",+ "name": "PB5",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, TIM16_BKIN/TIM3_CH2/SPI1_MOSI"+ },+ {+ "number": "29",+ "name": "PB6",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with USB Type-C PD capability (UCPD1_CC1), TIM16_CH1N/TIM4_CH1/USART1_TX"+ },+ {+ "number": "30",+ "name": "PB7",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, TIM17_CH1N/TIM4_CH2/I2C1_SDA/USART1_RX, PVD_IN"+ },+ {+ "number": "31",+ "name": "PB8-BOOT0",+ "type": "bidirectional",+ "description": "5V tolerant I/O pin with Fm+ (I2C Fast mode plus) capability, boot mode selection, TIM16_CH1/I2C1_SCL/USART3_RX"+ },+ {+ "number": "32",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground pin"+ },+ {+ "number": "33",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Pin 15 shares VDDA and VREF+ on same pad - combined nomenclature used per Table 12"+ ],+ "pages_sent": 76,+ "cost_usd": 0.5788,+ "at": "2026-10-01T17:59:41"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923589898735616",+ "pages": 197,+ "sha256": "caaa126a00ab9e06",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 33,+ "described": 33,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}