component
STM32L051K6U6
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.
main
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{
"schema_version": 1,
"type": "component",
"slug": "stm32l051k6u6",
"title": "STM32L051K6U6",
"brief": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"embedded processors & controllers",
"stm32l051k6u6",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "STM32L051K6U6",
"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/8590912059729534976",
"parts": {
"symbol": "stm32l051k6u6.kicad_sym",
"footprint": "stm32l051k6u6.kicad_mod",
"model_3d": "stm32l051k6u6-etched.glb",
"model_3d_plain": "stm32l051k6u6.glb",
"model_3d_step": "stm32l051k6u6-etched.step",
"model_3d_step_plain": "stm32l051k6u6.step",
"lbr": "stm32l051k6u6.lbr"
},
"distributor_links": {
"lcsc": "C69566",
"digikey": "497-17489-ND",
"mouser": "511-STM32L051K6U6"
},
"distributor_check": {
"checked_at": "2026-10-01T17:32:57Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "497-17489-ND",
"status": "found"
},
"mouser": {
"pn": "511-STM32L051K6U6",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VDD",
"type": "power_in",
"description": "Digital power supply pin; VDD operating range is 1.65 V to 3.6 V (1.8 V min at power-on if BOR is enabled, down to 1.65 V otherwise)."
},
{
"number": "2",
"name": "PC14-OSC32_IN",
"type": "bidirectional",
"description": "5V-tolerant (FT) GPIO PC14 after reset, alternatively usable as OSC32_IN, the LSE 32.768 kHz oscillator input."
},
{
"number": "3",
"name": "PC15-OSC32_OUT",
"type": "bidirectional",
"description": "Standard 3.3V I/O (TC) GPIO PC15 after reset, alternatively usable as OSC32_OUT, the LSE 32.768 kHz oscillator output."
},
{
"number": "4",
"name": "NRST",
"type": "bidirectional",
"description": "Bidirectional reset pin with an embedded weak pull-up resistor; driving it low resets the device (VIL(NRST) max 0.8 V, VIH(NRST) min 1.4 V)."
},
{
"number": "5",
"name": "VDDA",
"type": "power_in",
"description": "Analog power supply pin (1.65 V to 3.6 V) for the ADC, comparators, RC oscillators and PLL; must be kept at the same voltage as VDD (max 300 mV difference)."
},
{
"number": "6",
"name": "PA0",
"type": "bidirectional",
"description": "Standard 3.3V I/O (TC), fast ADC channel; alternate functions TIM2_CH1, USART2_CTS, TIM2_ETR, COMP1_OUT; additional functions COMP1_INM6, ADC_IN0, RTC_TAMP2/WKUP1."
},
{
"number": "7",
"name": "PA1",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions EVENTOUT, TIM2_CH2, USART2_RTS_DE, TIM21_ETR; additional functions COMP1_INP, ADC_IN1."
},
{
"number": "8",
"name": "PA2",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions TIM21_CH1, TIM2_CH3, USART2_TX, COMP2_OUT; additional functions COMP2_INM6, ADC_IN2."
},
{
"number": "9",
"name": "PA3",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions TIM21_CH2, TIM2_CH4, USART2_RX; additional functions COMP2_INP, ADC_IN3."
},
{
"number": "10",
"name": "PA4",
"type": "bidirectional",
"description": "Standard 3.3V I/O (TC), fast ADC channel; alternate functions SPI1_NSS, USART2_CK, TIM22_ETR; additional functions COMP1_INM4, COMP2_INM4, ADC_IN4."
},
{
"number": "11",
"name": "PA5",
"type": "bidirectional",
"description": "Standard 3.3V I/O (TC), fast ADC channel; alternate functions SPI1_SCK, TIM2_ETR, TIM2_CH1; additional functions COMP1_INM5, COMP2_INM5, ADC_IN5."
},
{
"number": "12",
"name": "PA6",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_MISO, LPUART1_CTS, TIM22_CH1, EVENTOUT, COMP1_OUT; additional function ADC_IN6."
},
{
"number": "13",
"name": "PA7",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_MOSI, TIM22_CH2, EVENTOUT, COMP2_OUT; additional function ADC_IN7."
},
{
"number": "14",
"name": "PB0",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate function EVENTOUT; additional functions ADC_IN8, VREF_OUT."
},
{
"number": "15",
"name": "PB1",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate function LPUART1_RTS_DE; additional functions ADC_IN9, VREF_OUT."
},
{
"number": "16",
"name": "PB2",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate function LPTIM1_OUT."
},
{
"number": "17",
"name": "VDD",
"type": "power_in",
"description": "Digital power supply pin; VDD operating range is 1.65 V to 3.6 V (1.8 V min at power-on if BOR is enabled, down to 1.65 V otherwise)."
},
{
"number": "18",
"name": "PA8",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions MCO, EVENTOUT, USART1_CK."
},
{
"number": "19",
"name": "PA9",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions MCO, USART1_TX."
},
{
"number": "20",
"name": "PA10",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate function USART1_RX."
},
{
"number": "21",
"name": "PA11",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_MISO, EVENTOUT, USART1_CTS, COMP1_OUT."
},
{
"number": "22",
"name": "PA12",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_MOSI, EVENTOUT, USART1_RTS_DE, COMP2_OUT."
},
{
"number": "23",
"name": "PA13",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate function SWDIO, the Serial Wire debug data pin."
},
{
"number": "24",
"name": "PA14",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SWCLK, the Serial Wire debug clock pin, and USART2_TX."
},
{
"number": "25",
"name": "PA15",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX, TIM2_CH1."
},
{
"number": "26",
"name": "PB3",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_SCK, TIM2_CH2, EVENTOUT; additional function COMP2_INN."
},
{
"number": "27",
"name": "PB4",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_MISO, EVENTOUT, TIM22_CH1; additional function COMP2_INP."
},
{
"number": "28",
"name": "PB5",
"type": "bidirectional",
"description": "5V-tolerant I/O (FT); alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM22_CH2; additional function COMP2_INP."
},
{
"number": "29",
"name": "PB6",
"type": "bidirectional",
"description": "5V-tolerant, Fast-mode-Plus capable I/O (FTf, 20 mA drive); alternate functions USART1_TX, I2C1_SCL, LPTIM1_ETR; additional function COMP2_INP."
},
{
"number": "30",
"name": "PB7",
"type": "bidirectional",
"description": "5V-tolerant, Fast-mode-Plus capable I/O (FTf, 20 mA drive); alternate functions USART1_RX, I2C1_SDA, LPTIM1_IN2; additional functions COMP2_INP, PVD_IN."
},
{
"number": "31",
"name": "BOOT0",
"type": "input",
"description": "Dedicated boot mode selection pin sampled at reset (together with nBOOT1 option bit) to select booting from Flash, System memory, or embedded RAM; input voltage range 0 to 5.5 V."
},
{
"number": "32",
"name": "PB8",
"type": "bidirectional",
"description": "5V-tolerant, Fast-mode-Plus capable I/O (FTf, 20 mA drive); alternate function I2C1_SCL."
},
{
"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: Pins 6 and 17 (VSS/ground) are not explicitly listed in Table 15 UFQFPN32 column, but are included b"
],
"pages_sent": 131,
"cost_usd": 0.8185,
"at": "2026-10-01T17:32:39"
},
"datasheet": {
"url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590912059729534976",
"pages": 131,
"sha256": "df2ac5c4dfa917ae",
"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"
}
},
"metadata": {
"specs": {
"Manufacturer": "STMicroelectronics",
"Package": "UFQFPN-32(5x5)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"stm32l051k6u6"
],
"discovery_pitch": "STM32L051K6U6 (STMicroelectronics) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"stm32l051k6u6.kicad_sym",
"stm32l051k6u6.kicad_mod",
"stm32l051k6u6.glb",
"stm32l051k6u6.step",
"stm32l051k6u6.lbr",
"docs/hero.png",
"docs/stm32l051k6u6-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html"
],
"visibility": {
"public": true
}
}