component
STM32L431KCU6TR
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 @@+# STM32L431KCU6TR++**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · UFQFPN-32(5x5)++STM32L431KCU6TR 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 input, 1.71V to 3.6V range |+| 2 | PC14-OSC32_IN | bidirectional | Port C pin 14, 5V tolerant input/output, functions as external 32kHz oscillator input when configured as OSC32_IN |+| 3 | PC15-OSC32_OUT | bidirectional | Port C pin 15, 5V tolerant input/output, functions as external 32kHz oscillator output when configured as OSC32_OUT |+| 4 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor and debouncing for system reset control |+| 5 | VDDA/VREF+ | power_in | Analog power supply for ADC, DAC, comparators and operational amplifiers, 1.62V to 3.6V, also serves as positive reference voltage |+| 6 | PA0/CK_IN | bidirectional | Port A pin 0, 5V tolerant input/output with analog capability for ADC1_IN5, can function as external clock input or TIM2_CH1 |+| 7 | PA1 | bidirectional | Port A pin 1, 5V tolerant input/output with analog capability for ADC1_IN6 or TIM2_CH2 |+| 8 | PA2 | bidirectional | Port A pin 2, 5V tolerant input/output with analog capability for ADC1_IN7 or USART2_TX |+| 9 | PA3 | bidirectional | Port A pin 3, 3.6V tolerant input/output with analog capability for operational amplifier output OPAMP1_VOUT or ADC1_IN8 |+| 10 | PA4 | bidirectional | Port A pin 4, 3.6V tolerant input/output with analog capability for DAC1_OUT1 or ADC1_IN9 |+| 11 | PA5 | bidirectional | Port A pin 5, 3.6V tolerant input/output with analog capability for DAC1_OUT2 or ADC1_IN10 |+| 12 | PA6 | bidirectional | Port A pin 6, 5V tolerant input/output with analog capability for ADC1_IN11 or TIM16_CH1 |+| 13 | PA7 | bidirectional | Port A pin 7, 5V tolerant input/output with analog capability for ADC1_IN12, Fm+ capable |+| 14 | PB0 | bidirectional | Port B pin 0, 5V tolerant input/output with analog capability for ADC1_IN15 |+| 15 | PB1 | bidirectional | Port B pin 1, 5V tolerant input/output with analog capability for ADC1_IN16 |+| 16 | VSS | power_in | Ground (0V reference) for digital and analog circuits |+| 17 | VDD | power_in | Main power supply input, 1.71V to 3.6V range |+| 18 | PA8 | bidirectional | Port A pin 8, 5V tolerant input/output for MCO clock output or TIM1_CH1 |+| 19 | PA9 | bidirectional | Port A pin 9, 5V tolerant input/output with Fm+ capability for USART1_TX or TIM1_CH2 |+| 20 | PA10 | bidirectional | Port A pin 10, 5V tolerant input/output with Fm+ capability for USART1_RX or TIM1_CH3 |+| 21 | PA11 | bidirectional | Port A pin 11, 5V tolerant input/output for CAN1_RX or TIM1_CH4 |+| 22 | PA12 | bidirectional | Port A pin 12, 5V tolerant input/output for CAN1_TX or USART1_RTS_DE |+| 23 | PA13 | bidirectional | Port A pin 13, 5V tolerant input/output configured as JTAG TMS or Serial Wire Debug SWDIO after reset, internal pull-up resistor enabled |+| 24 | PA14 | bidirectional | Port A pin 14, 5V tolerant input/output configured as JTAG TCK or Serial Wire Debug SWCLK after reset, internal pull-down resistor enabled |+| 25 | PA15 | bidirectional | Port A pin 15, 5V tolerant input/output configured as JTAG TDI after reset, internal pull-up resistor enabled |+| 26 | PB3 | bidirectional | Port B pin 3, 5V tolerant input/output with analog capability configured as JTAG TDO or Serial Wire Debug trace after reset |+| 27 | PB4 | bidirectional | Port B pin 4, 5V tolerant input/output with Fm+ capability configured as JTAG NTRST after reset, internal pull-up resistor enabled |+| 28 | PB5 | bidirectional | Port B pin 5, 5V tolerant input/output for LPTIM1_IN1 or SPI1_MOSI |+| 29 | PB6 | bidirectional | Port B pin 6, 5V tolerant input/output with Fm+ capability for USART1_TX or I2C1_SCL |+| 30 | PB7 | bidirectional | Port B pin 7, 5V tolerant input/output with Fm+ capability for USART1_RX or I2C1_SDA |+| 31 | PH3/BOOT0 | bidirectional | Port H pin 3, 5V tolerant input/output, functions as BOOT0 for boot mode selection between Flash and system memory |+| 32 | VSS | power_in | Ground (0V reference) for digital and analog circuits |+| 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: `STM32L431KCU6TR`+- Footprint: `Package_DFN_QFN:UFQFPN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm`+- 3D model: UFQFPN-32(5x5) (KiCad packages3D, STEP)+- 3D model files: `stm32l431kcu6tr-etched.step` / `stm32l431kcu6tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32l431kcu6tr.step` / `stm32l431kcu6tr.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/8588893407582294016) (208 pp, sha256 `71963de3cb899f8f`, retrieved 2026-10-06, 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](docs/stm32l431kcu6tr-datasheet.pdf)
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Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "embedded processors & controllers",+ "stm32l431kcu6tr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "stm32l431kcu6tr.kicad_sym",+ "stm32l431kcu6tr.kicad_mod",+ "stm32l431kcu6tr.glb",+ "stm32l431kcu6tr.step",+ "stm32l431kcu6tr.lbr",+ "docs/hero.png",+ "docs/stm32l431kcu6tr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "stm32l431kcu6tr-hero.glb",+ "stm32l431kcu6tr-hero.overlay.json"+ ],+ "component": {+ "mpn": "STM32L431KCU6TR",+ "manufacturer": "STMicroelectronics",+ "package": "UFQFPN-32(5x5)",+ "pin_count": 33,+ "category": "Embedded Processors & Controllers",+ "subcategory": "Microcontrollers (MCU/MPU/SOC)",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893407582294016",+ "parts": {+ "symbol": "stm32l431kcu6tr.kicad_sym",+ "footprint": "stm32l431kcu6tr.kicad_mod",+ "model_3d": "stm32l431kcu6tr-hero.glb",+ "model_3d_plain": "stm32l431kcu6tr.glb",+ "model_3d_step": "stm32l431kcu6tr-etched.step",+ "model_3d_step_plain": "stm32l431kcu6tr.step",+ "lbr": "stm32l431kcu6tr.lbr"+ },+ "distributor_links": {+ "lcsc": 2054968,+ "digikey": "497-STM32L431KCU6TR-ND",+ "mouser": "511-STM32L431KCU6TR"+ },+ "distributor_check": {+ "checked_at": "2026-10-06T16:47:37Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "497-STM32L431KCU6TR-ND",+ "status": "found"+ },+ "mouser": {+ "pn": "511-STM32L431KCU6TR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VDD",+ "type": "power_in",+ "description": "Main power supply input, 1.71V to 3.6V range"+ },+ {+ "number": "2",+ "name": "PC14-OSC32_IN",+ "type": "bidirectional",+ "description": "Port C pin 14, 5V tolerant input/output, functions as external 32kHz oscillator input when configured as OSC32_IN"+ },+ {+ "number": "3",+ "name": "PC15-OSC32_OUT",+ "type": "bidirectional",+ "description": "Port C pin 15, 5V tolerant input/output, functions as external 32kHz oscillator output when configured as OSC32_OUT"+ },+ {+ "number": "4",+ "name": "NRST",+ "type": "bidirectional",+ "description": "Bidirectional reset pin with embedded weak pull-up resistor and debouncing for system reset control"+ },+ {+ "number": "5",+ "name": "VDDA/VREF+",+ "type": "power_in",+ "description": "Analog power supply for ADC, DAC, comparators and operational amplifiers, 1.62V to 3.6V, also serves as positive reference voltage"+ },+ {+ "number": "6",+ "name": "PA0/CK_IN",+ "type": "bidirectional",+ "description": "Port A pin 0, 5V tolerant input/output with analog capability for ADC1_IN5, can function as external clock input or TIM2_CH1"+ },+ {+ "number": "7",+ "name": "PA1",+ "type": "bidirectional",+ "description": "Port A pin 1, 5V tolerant input/output with analog capability for ADC1_IN6 or TIM2_CH2"+ },+ {+ "number": "8",+ "name": "PA2",+ "type": "bidirectional",+ "description": "Port A pin 2, 5V tolerant input/output with analog capability for ADC1_IN7 or USART2_TX"+ },+ {+ "number": "9",+ "name": "PA3",+ "type": "bidirectional",+ "description": "Port A pin 3, 3.6V tolerant input/output with analog capability for operational amplifier output OPAMP1_VOUT or ADC1_IN8"+ },+ {+ "number": "10",+ "name": "PA4",+ "type": "bidirectional",+ "description": "Port A pin 4, 3.6V tolerant input/output with analog capability for DAC1_OUT1 or ADC1_IN9"+ },+ {+ "number": "11",+ "name": "PA5",+ "type": "bidirectional",+ "description": "Port A pin 5, 3.6V tolerant input/output with analog capability for DAC1_OUT2 or ADC1_IN10"+ },+ {+ "number": "12",+ "name": "PA6",+ "type": "bidirectional",+ "description": "Port A pin 6, 5V tolerant input/output with analog capability for ADC1_IN11 or TIM16_CH1"+ },+ {+ "number": "13",+ "name": "PA7",+ "type": "bidirectional",+ "description": "Port A pin 7, 5V tolerant input/output with analog capability for ADC1_IN12, Fm+ capable"+ },+ {+ "number": "14",+ "name": "PB0",+ "type": "bidirectional",+ "description": "Port B pin 0, 5V tolerant input/output with analog capability for ADC1_IN15"+ },+ {+ "number": "15",+ "name": "PB1",+ "type": "bidirectional",+ "description": "Port B pin 1, 5V tolerant input/output with analog capability for ADC1_IN16"+ },+ {+ "number": "16",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground (0V reference) for digital and analog circuits"+ },+ {+ "number": "17",+ "name": "VDD",+ "type": "power_in",+ "description": "Main power supply input, 1.71V to 3.6V range"+ },+ {+ "number": "18",+ "name": "PA8",+ "type": "bidirectional",+ "description": "Port A pin 8, 5V tolerant input/output for MCO clock output or TIM1_CH1"+ },+ {+ "number": "19",+ "name": "PA9",+ "type": "bidirectional",+ "description": "Port A pin 9, 5V tolerant input/output with Fm+ capability for USART1_TX or TIM1_CH2"+ },+ {+ "number": "20",+ "name": "PA10",+ "type": "bidirectional",+ "description": "Port A pin 10, 5V tolerant input/output with Fm+ capability for USART1_RX or TIM1_CH3"+ },+ {+ "number": "21",+ "name": "PA11",+ "type": "bidirectional",+ "description": "Port A pin 11, 5V tolerant input/output for CAN1_RX or TIM1_CH4"+ },+ {+ "number": "22",+ "name": "PA12",+ "type": "bidirectional",+ "description": "Port A pin 12, 5V tolerant input/output for CAN1_TX or USART1_RTS_DE"+ },+ {+ "number": "23",+ "name": "PA13",+ "type": "bidirectional",+ "description": "Port A pin 13, 5V tolerant input/output configured as JTAG TMS or Serial Wire Debug SWDIO after reset, internal pull-up resistor enabled"+ },+ {+ "number": "24",+ "name": "PA14",+ "type": "bidirectional",+ "description": "Port A pin 14, 5V tolerant input/output configured as JTAG TCK or Serial Wire Debug SWCLK after reset, internal pull-down resistor enabled"+ },+ {+ "number": "25",+ "name": "PA15",+ "type": "bidirectional",+ "description": "Port A pin 15, 5V tolerant input/output configured as JTAG TDI after reset, internal pull-up resistor enabled"+ },+ {+ "number": "26",+ "name": "PB3",+ "type": "bidirectional",+ "description": "Port B pin 3, 5V tolerant input/output with analog capability configured as JTAG TDO or Serial Wire Debug trace after reset"+ },+ {+ "number": "27",+ "name": "PB4",+ "type": "bidirectional",+ "description": "Port B pin 4, 5V tolerant input/output with Fm+ capability configured as JTAG NTRST after reset, internal pull-up resistor enabled"+ },+ {+ "number": "28",+ "name": "PB5",+ "type": "bidirectional",+ "description": "Port B pin 5, 5V tolerant input/output for LPTIM1_IN1 or SPI1_MOSI"+ },+ {+ "number": "29",+ "name": "PB6",+ "type": "bidirectional",+ "description": "Port B pin 6, 5V tolerant input/output with Fm+ capability for USART1_TX or I2C1_SCL"+ },+ {+ "number": "30",+ "name": "PB7",+ "type": "bidirectional",+ "description": "Port B pin 7, 5V tolerant input/output with Fm+ capability for USART1_RX or I2C1_SDA"+ },+ {+ "number": "31",+ "name": "PH3/BOOT0",+ "type": "bidirectional",+ "description": "Port H pin 3, 5V tolerant input/output, functions as BOOT0 for boot mode selection between Flash and system memory"+ },+ {+ "number": "32",+ "name": "VSS",+ "type": "power_in",+ "description": "Ground (0V reference) for digital and analog circuits"+ },+ {+ "number": "33",+ "name": "EP",+ "type": "passive",+ "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.3",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.3",+ "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 5 (VDDA/VREF+) combines analog power supply and positive reference voltage; verify that external; Debug/JTAG pins (23, 24, 25, 26, 27) have alternate functions after reset that should not conflict w; Pin 31 (PH3/BOOT0) function selection depends on voltage level during power-up; confirm boot mode re",+ "exposed pad 33 added from the footprint"+ ],+ "pages_sent": 80,+ "cost_usd": 0.5544,+ "at": "2026-10-06T16:47:18"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893407582294016",+ "pages": 208,+ "sha256": "71963de3cb899f8f",+ "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]"+ }+}