STM32L052K8U3

{
  "slug": "stm32l052k8u3",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics Microcontrollers (MCU/MPU/SOC), UFQFPN-32(5x5). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "stm32l052k8u3",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "stm32l052k8u3.kicad_sym",
    "stm32l052k8u3.kicad_mod",
    "stm32l052k8u3.glb",
    "stm32l052k8u3.step",
    "stm32l052k8u3.lbr",
    "docs/hero.png",
    "docs/stm32l052k8u3-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "stm32l052k8u3-hero.glb",
    "stm32l052k8u3-hero.overlay.json"
  ],
  "component": {
    "mpn": "STM32L052K8U3",
    "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/8588923414291210240",
    "parts": {
      "symbol": "stm32l052k8u3.kicad_sym",
      "footprint": "stm32l052k8u3.kicad_mod",
      "model_3d": "stm32l052k8u3-hero.glb",
      "model_3d_plain": "stm32l052k8u3.glb",
      "model_3d_step": "stm32l052k8u3-etched.step",
      "model_3d_step_plain": "stm32l052k8u3.step",
      "lbr": "stm32l052k8u3.lbr"
    },
    "distributor_links": {
      "lcsc": "C1342049",
      "digikey": "497-16817-ND",
      "mouser": "511-STM32L052K8U3"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T16:09:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-16817-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "511-STM32L052K8U3",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "MCU digital supply pin; the features list gives the device supply range as 1.65 V to 3.6 V."
      },
      {
        "number": "2",
        "name": "PC14-OSC32_IN",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O (PC14), also the 32 kHz LSE oscillator input OSC32_IN."
      },
      {
        "number": "3",
        "name": "PC15-OSC32_OUT",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O (PC15), also the 32 kHz LSE oscillator output OSC32_OUT."
      },
      {
        "number": "4",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Bidirectional reset pin with an embedded weak pull-up resistor."
      },
      {
        "number": "5",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply pin; the features list gives ADC operation down to 1.65 V and DAC operation down to 1.8 V."
      },
      {
        "number": "6",
        "name": "PA0",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O that also provides ADC_IN0, COMP1_INM6 and RTC_TAMP2/WKUP1, with alternate functions TIM2_CH1, USART2_CTS and COMP1_OUT."
      },
      {
        "number": "7",
        "name": "PA1",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that also provides ADC_IN1 and COMP1_INP, with alternate functions TIM2_CH2, USART2_RTS/USART2_DE and TIM21_ETR."
      },
      {
        "number": "8",
        "name": "PA2",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that also provides ADC_IN2 and COMP2_INM6, with alternate functions TIM21_CH1, TIM2_CH3, USART2_TX and COMP2_OUT."
      },
      {
        "number": "9",
        "name": "PA3",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that also provides ADC_IN3 and COMP2_INP, with alternate functions TIM21_CH2, TIM2_CH4 and USART2_RX."
      },
      {
        "number": "10",
        "name": "PA4",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O with reduced touch sensing sensitivity, recommended for use as a sampling capacitor I/O; also provides ADC_IN4 and DAC_OUT."
      },
      {
        "number": "11",
        "name": "PA5",
        "type": "bidirectional",
        "description": "Standard 3.3 V TC I/O that also provides ADC_IN5, with alternate functions SPI1_SCK, TIM2_ETR, TSC_G2_IO2 and TIM2_CH1."
      },
      {
        "number": "12",
        "name": "PA6",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that also provides ADC_IN6, with alternate functions SPI1_MISO, LPUART1_CTS, TIM22_CH1 and COMP1_OUT."
      },
      {
        "number": "13",
        "name": "PA7",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that also provides ADC_IN7, with alternate functions SPI1_MOSI, TIM22_CH2 and COMP2_OUT."
      },
      {
        "number": "14",
        "name": "PB0",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that also provides ADC_IN8 and VREF_OUT, with alternate functions EVENTOUT and TSC_G3_IO2."
      },
      {
        "number": "15",
        "name": "PB1",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that also provides ADC_IN9 and VREF_OUT, with alternate functions TSC_G3_IO3 and LPUART1_RTS/LPUART1_DE."
      },
      {
        "number": "16",
        "name": "PB2",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions LPTIM1_OUT and TSC_G3_IO4."
      },
      {
        "number": "17",
        "name": "VDD",
        "type": "power_in",
        "description": "MCU digital supply pin; the features list gives the device supply range as 1.65 V to 3.6 V."
      },
      {
        "number": "18",
        "name": "PA8",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions MCO, USB_CRS_SYNC, EVENTOUT and USART1_CK."
      },
      {
        "number": "19",
        "name": "PA9",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions MCO, TSC_G4_IO1 and USART1_TX."
      },
      {
        "number": "20",
        "name": "PA10",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions TSC_G4_IO2 and USART1_RX."
      },
      {
        "number": "21",
        "name": "PA11",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O powered by VDD_USB (table note 3), with additional function USB_DM and alternate functions SPI1_MISO, USART1_CTS and COMP1_OUT."
      },
      {
        "number": "22",
        "name": "PA12",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O powered by VDD_USB (table note 3), with additional function USB_DP and alternate functions SPI1_MOSI, USART1_RTS/USART1_DE and COMP2_OUT."
      },
      {
        "number": "23",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions SWDIO (serial wire debug data) and USB_NOE."
      },
      {
        "number": "24",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions SWCLK (serial wire debug clock) and USART2_TX."
      },
      {
        "number": "25",
        "name": "PA15",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX and TIM2_CH1."
      },
      {
        "number": "26",
        "name": "PB3",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions SPI1_SCK, TIM2_CH2, TSC_G5_IO1 and EVENTOUT, and additional function COMP2_INN."
      },
      {
        "number": "27",
        "name": "PB4",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions SPI1_MISO, EVENTOUT, TSC_G5_IO2 and TIM22_CH1, and additional function COMP2_INP."
      },
      {
        "number": "28",
        "name": "PB5",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O with alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA and TIM22_CH2, and additional function COMP2_INP."
      },
      {
        "number": "29",
        "name": "PB6",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (FM+ capable) with alternate functions USART1_TX, I2C1_SCL, LPTIM1_ETR and TSC_G5_IO3, and additional function COMP2_INP."
      },
      {
        "number": "30",
        "name": "PB7",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (FM+ capable) with alternate functions USART1_RX, I2C1_SDA, LPTIM1_IN2 and TSC_G5_IO4, and additional functions COMP2_INP and PVD_IN."
      },
      {
        "number": "31",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated BOOT0 pin (B structure) used for boot mode selection; the extracted text gives no level or timing limits for it."
      },
      {
        "number": "32",
        "name": "PB8",
        "type": "bidirectional",
        "description": "5 V tolerant FTf I/O (FM+ capable) with alternate functions TSC_SYNC and 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 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Table 16 has no VSS entry in the UFQFN32 column. The LQFP32 VSS rows (pins 16 and 32) show '-' in th; PA11 and PA12 are powered by VDD_USB (table note 3), but the VDD_USB row in Table 16 has no UFQFN32 ; Table 16 column header reads 'UFQFN32'; this is taken to be the UFQFPN32 package (5x5 mm). The MPN s",
          "exposed pad 33 added from the footprint"
        ],
        "pages_sent": 68,
        "cost_usd": 0.2854,
        "at": "2026-10-11T16:09:10"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923414291210240",
        "pages": 150,
        "sha256": "ccec04f26ebfb036",
        "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"
    },
    "models_3d": [
      {
        "file": "stm32l052k8u3.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          1.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "90af021df1253eae35bee4f4a4f9ba63bcf4a308f6e9f12d58f6e00181c23140",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "stm32l052k8u3-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          1.1
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ae522ad30705aa2f7a70194c127066175e2b8b0522b5763d5d2080e48f5a3171",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}