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STM32L071K8U6
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STMicroelectronics Global Sourcing Parts, 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 @@+# STM32L071K8U6++**STMicroelectronics** · Global Sourcing Parts · UFQFPN-32(5x5)++STM32L071K8U6 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 | PC14-OSC32_IN | bidirectional | 5 V tolerant (FT) I/O PC14 that also serves as the OSC32_IN additional function for the 32 kHz LSE oscillator; no alternate functions listed. |+| 2 | PC15-OSC32_OUT | bidirectional | Standard 3.3 V (TC) I/O PC15 that also serves as the OSC32_OUT additional function for the 32 kHz LSE oscillator. |+| 3 | NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor. |+| 4 | VSSA | power_in | Analog ground supply pin. |+| 5 | VDDA | power_in | Analog power supply pin; minimum 1.65 V per the revision history for Table 25. |+| 6 | PA0 | bidirectional | I/O (TT_a structure) with TIM2_CH1, USART2_CTS, TIM2_ETR, USART4_TX and COMP1_OUT alternate functions, plus COMP1_INM, ADC_IN0 and RTC_TAMP2/WKUP1 additional functions. |+| 7 | PA1 | bidirectional | 5 V tolerant I/O with EVENTOUT, TIM2_CH2, USART2_RTS/DE, TIM21_ETR and USART4_RX alternate functions, plus COMP1_INP and ADC_IN1. |+| 8 | PA2 | bidirectional | 5 V tolerant I/O with TIM21_CH1, TIM2_CH3, USART2_TX, LPUART1_TX and COMP2_OUT alternate functions, plus COMP2_INM and ADC_IN2. |+| 9 | PA3 | bidirectional | 5 V tolerant I/O with TIM21_CH2, TIM2_CH4, USART2_RX and LPUART1_RX alternate functions, plus COMP2_INP and ADC_IN3. |+| 10 | PA4 | bidirectional | Standard 3.3 V (TC) I/O with SPI1_NSS, USART2_CK and TIM22_ETR alternate functions, plus COMP1_INM, COMP2_INM and ADC_IN4. |+| 11 | PA5 | bidirectional | Standard 3.3 V (TC) I/O with SPI1_SCK, TIM2_ETR and TIM2_CH1 alternate functions, plus COMP1_INM, COMP2_INM and ADC_IN5. |+| 12 | PA6 | bidirectional | 5 V tolerant I/O with SPI1_MISO, TIM3_CH1, LPUART1_CTS, TIM22_CH1, EVENTOUT and COMP1_OUT alternate functions, plus ADC_IN6. |+| 13 | PA7 | bidirectional | 5 V tolerant I/O with SPI1_MOSI, TIM3_CH2, TIM22_CH2, EVENTOUT and COMP2_OUT alternate functions, plus ADC_IN7. |+| 14 | PB0 | bidirectional | 5 V tolerant I/O with EVENTOUT and TIM3_CH3 alternate functions, plus ADC_IN8 and VREF_OUT. |+| 15 | PB1 | bidirectional | 5 V tolerant I/O with TIM3_CH4 and LPUART1_RTS/DE alternate functions, plus ADC_IN9 and VREF_OUT. |+| 16 | VSS | power_in | Digital ground supply pin. |+| 17 | VDD | power_in | Digital power supply pin; device supply range is 1.65 V to 3.6 V (1.8 V to 3.6 V on versions without option D). |+| 18 | PA8 | bidirectional | 5 V tolerant, Fast Mode Plus capable I/O with MCO, EVENTOUT, USART1_CK and I2C3_SCL alternate functions. |+| 19 | PA9 | bidirectional | 5 V tolerant, Fast Mode Plus capable I/O with MCO, USART1_TX, I2C1_SCL and I2C3_SMBA alternate functions. |+| 20 | PA10 | bidirectional | 5 V tolerant, Fast Mode Plus capable I/O with USART1_RX and I2C1_SDA alternate functions. |+| 21 | PA11 | bidirectional | I/O supplied by VDDIO2 with SPI1_MISO, EVENTOUT, USART1_CTS and COMP1_OUT alternate functions. |+| 22 | PA12 | bidirectional | I/O supplied by VDDIO2 with SPI1_MOSI, EVENTOUT, USART1_RTS/DE and COMP2_OUT alternate functions. |+| 23 | PA13 | bidirectional | 5 V tolerant I/O that is SWDIO (serial wire debug data) after reset, with LPUART1_RX as an alternate function. |+| 24 | VDDIO2 | power_in | Separate supply pin for the PA11 and PA12 I/Os. |+| 25 | PA14 | bidirectional | 5 V tolerant I/O that is SWCLK (serial wire debug clock) after reset, with USART2_TX and LPUART1_TX alternate functions. |+| 26 | PB4 | bidirectional | 5 V tolerant, Fast Mode Plus capable I/O with SPI1_MISO, TIM3_CH1, TIM22_CH1, USART1_CTS, USART5_RX and I2C3_SDA alternate functions, plus COMP2_INP. |+| 27 | PB5 | bidirectional | 5 V tolerant I/O with SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM3_CH2/TIM22_CH2, USART1_CK, USART5_CK and USART5_RTS/DE alternate functions, plus COMP2_INP. |+| 28 | PB6 | bidirectional | 5 V tolerant, Fast Mode Plus capable I/O with USART1_TX, I2C1_SCL and LPTIM1_ETR alternate functions, plus COMP2_INP. |+| 29 | PB7 | bidirectional | 5 V tolerant, Fast Mode Plus capable I/O with USART1_RX, I2C1_SDA, LPTIM1_IN2 and USART4_CTS alternate functions, plus COMP2_INP and VREF_PVD_IN. |+| 30 | BOOT0 | input | Dedicated boot mode selection input pin (I/O structure B). |+| 31 | VSS | power_in | Digital ground supply pin. |+| 32 | VDD | power_in | Digital power supply pin; device supply range is 1.65 V to 3.6 V (1.8 V to 3.6 V on versions without option D). |+| 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 | Global Sourcing Parts |+| Pins | 33 |++## CAD (KiCad official)++- Symbol: `STM32L071K8U6`+- Footprint: `Package_DFN_QFN:UFQFPN-32-1EP_5x5mm_P0.5mm_EP3.5x3.5mm`+- 3D model: UFQFPN-32(5x5) (KiCad packages3D, STEP)+- 3D model files: `stm32l071k8u6-etched.step` / `stm32l071k8u6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm32l071k8u6.step` / `stm32l071k8u6.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/8588886707911868416) (144 pp, sha256 `da3ebcbd4ae9560f`, retrieved 2026-10-05, 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/stm32l071k8u6-datasheet.pdf)
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no alternate functions listed."+ },+ {+ "number": "2",+ "name": "PC15-OSC32_OUT",+ "type": "bidirectional",+ "description": "Standard 3.3 V (TC) I/O PC15 that also serves as the OSC32_OUT additional function for the 32 kHz LSE oscillator."+ },+ {+ "number": "3",+ "name": "NRST",+ "type": "bidirectional",+ "description": "Bidirectional reset pin with embedded weak pull-up resistor."+ },+ {+ "number": "4",+ "name": "VSSA",+ "type": "power_in",+ "description": "Analog ground supply pin."+ },+ {+ "number": "5",+ "name": "VDDA",+ "type": "power_in",+ "description": "Analog power supply pin; minimum 1.65 V per the revision history for Table 25."+ },+ {+ "number": "6",+ "name": "PA0",+ "type": "bidirectional",+ "description": "I/O (TT_a structure) with TIM2_CH1, USART2_CTS, TIM2_ETR, USART4_TX and COMP1_OUT alternate functions, plus COMP1_INM, ADC_IN0 and RTC_TAMP2/WKUP1 additional functions."+ },+ {+ "number": "7",+ "name": "PA1",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with EVENTOUT, TIM2_CH2, USART2_RTS/DE, TIM21_ETR and USART4_RX alternate functions, plus COMP1_INP and ADC_IN1."+ },+ {+ "number": "8",+ "name": "PA2",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with TIM21_CH1, TIM2_CH3, USART2_TX, LPUART1_TX and COMP2_OUT alternate functions, plus COMP2_INM and ADC_IN2."+ },+ {+ "number": "9",+ "name": "PA3",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with TIM21_CH2, TIM2_CH4, USART2_RX and LPUART1_RX alternate functions, plus COMP2_INP and ADC_IN3."+ },+ {+ "number": "10",+ "name": "PA4",+ "type": "bidirectional",+ "description": "Standard 3.3 V (TC) I/O with SPI1_NSS, USART2_CK and TIM22_ETR alternate functions, plus COMP1_INM, COMP2_INM and ADC_IN4."+ },+ {+ "number": "11",+ "name": "PA5",+ "type": "bidirectional",+ "description": "Standard 3.3 V (TC) I/O with SPI1_SCK, TIM2_ETR and TIM2_CH1 alternate functions, plus COMP1_INM, COMP2_INM and ADC_IN5."+ },+ {+ "number": "12",+ "name": "PA6",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with SPI1_MISO, TIM3_CH1, LPUART1_CTS, TIM22_CH1, EVENTOUT and COMP1_OUT alternate functions, plus ADC_IN6."+ },+ {+ "number": "13",+ "name": "PA7",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with SPI1_MOSI, TIM3_CH2, TIM22_CH2, EVENTOUT and COMP2_OUT alternate functions, plus ADC_IN7."+ },+ {+ "number": "14",+ "name": "PB0",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with EVENTOUT and TIM3_CH3 alternate functions, plus ADC_IN8 and VREF_OUT."+ },+ {+ "number": "15",+ "name": "PB1",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with TIM3_CH4 and LPUART1_RTS/DE alternate functions, plus ADC_IN9 and VREF_OUT."+ },+ {+ "number": "16",+ "name": "VSS",+ "type": "power_in",+ "description": "Digital ground supply pin."+ },+ {+ "number": "17",+ "name": "VDD",+ "type": "power_in",+ "description": "Digital power supply pin; device supply range is 1.65 V to 3.6 V (1.8 V to 3.6 V on versions without option D)."+ },+ {+ "number": "18",+ "name": "PA8",+ "type": "bidirectional",+ "description": "5 V tolerant, Fast Mode Plus capable I/O with MCO, EVENTOUT, USART1_CK and I2C3_SCL alternate functions."+ },+ {+ "number": "19",+ "name": "PA9",+ "type": "bidirectional",+ "description": "5 V tolerant, Fast Mode Plus capable I/O with MCO, USART1_TX, I2C1_SCL and I2C3_SMBA alternate functions."+ },+ {+ "number": "20",+ "name": "PA10",+ "type": "bidirectional",+ "description": "5 V tolerant, Fast Mode Plus capable I/O with USART1_RX and I2C1_SDA alternate functions."+ },+ {+ "number": "21",+ "name": "PA11",+ "type": "bidirectional",+ "description": "I/O supplied by VDDIO2 with SPI1_MISO, EVENTOUT, USART1_CTS and COMP1_OUT alternate functions."+ },+ {+ "number": "22",+ "name": "PA12",+ "type": "bidirectional",+ "description": "I/O supplied by VDDIO2 with SPI1_MOSI, EVENTOUT, USART1_RTS/DE and COMP2_OUT alternate functions."+ },+ {+ "number": "23",+ "name": "PA13",+ "type": "bidirectional",+ "description": "5 V tolerant I/O that is SWDIO (serial wire debug data) after reset, with LPUART1_RX as an alternate function."+ },+ {+ "number": "24",+ "name": "VDDIO2",+ "type": "power_in",+ "description": "Separate supply pin for the PA11 and PA12 I/Os."+ },+ {+ "number": "25",+ "name": "PA14",+ "type": "bidirectional",+ "description": "5 V tolerant I/O that is SWCLK (serial wire debug clock) after reset, with USART2_TX and LPUART1_TX alternate functions."+ },+ {+ "number": "26",+ "name": "PB4",+ "type": "bidirectional",+ "description": "5 V tolerant, Fast Mode Plus capable I/O with SPI1_MISO, TIM3_CH1, TIM22_CH1, USART1_CTS, USART5_RX and I2C3_SDA alternate functions, plus COMP2_INP."+ },+ {+ "number": "27",+ "name": "PB5",+ "type": "bidirectional",+ "description": "5 V tolerant I/O with SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM3_CH2/TIM22_CH2, USART1_CK, USART5_CK and USART5_RTS/DE alternate functions, plus COMP2_INP."+ },+ {+ "number": "28",+ "name": "PB6",+ "type": "bidirectional",+ "description": "5 V tolerant, Fast Mode Plus capable I/O with USART1_TX, I2C1_SCL and LPTIM1_ETR alternate functions, plus COMP2_INP."+ },+ {+ "number": "29",+ "name": "PB7",+ "type": "bidirectional",+ "description": "5 V tolerant, Fast Mode Plus capable I/O with USART1_RX, I2C1_SDA, LPTIM1_IN2 and USART4_CTS alternate functions, plus COMP2_INP and VREF_PVD_IN."+ },+ {+ "number": "30",+ "name": "BOOT0",+ "type": "input",+ "description": "Dedicated boot mode selection input pin (I/O structure B)."+ },+ {+ "number": "31",+ "name": "VSS",+ "type": "power_in",+ "description": "Digital ground supply pin."+ },+ {+ "number": "32",+ "name": "VDD",+ "type": "power_in",+ "description": "Digital power supply pin; device supply range is 1.65 V to 3.6 V (1.8 V to 3.6 V on versions without option D)."+ },+ {+ "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: VREF+ and VREF- reference pins are not present in UFQFPN32 package variant; these are available only; PA11 and PA12 are supplied by dedicated VDDIO2 power pin (pin 24) rather than main VDD; ensure VDDIO; Verify that PC14-OSC32_IN (pin 2) designation; datasheet shows this as 'PC14-OSC32_IN (PC14)' indica",+ "exposed pad 33 added from the footprint"+ ],+ "pages_sent": 70,+ "cost_usd": 0.4812,+ "at": "2026-10-05T21:12:53"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886707911868416",+ "pages": 144,+ "sha256": "da3ebcbd4ae9560f",+ "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]"+ }+}