component
STM32L071K8U6
Public Made by Adomby adom
STMicroelectronics Global Sourcing Parts, UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
main
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"title": "STM32L071K8U6",
"brief": "STMicroelectronics Global Sourcing Parts, UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"component": {
"mpn": "STM32L071K8U6",
"manufacturer": "STMicroelectronics",
"package": "UFQFPN-32(5x5)",
"pin_count": 33,
"category": "Global Sourcing Parts",
"subcategory": "Global Sourcing Parts",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886707911868416",
"parts": {
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"distributor_links": {
"lcsc": 426414,
"digikey": "497-18576-ND",
"mouser": "511-STM32L071K8U6"
},
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"checked_at": "2026-10-05T21:13:09Z",
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"pins": [
{
"number": "1",
"name": "PC14-OSC32_IN",
"type": "bidirectional",
"description": "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."
},
{
"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"
},
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"pages": 144,
"sha256": "da3ebcbd4ae9560f",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
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"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "UFQFPN-32(5x5)",
"Category": "Global Sourcing Parts",
"Pins": "33"
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"email": "[email protected]"
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