HC32F451JEUB-QFN48TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "hc32f451jeub-qfn48tr",
  "title": "HC32F451JEUB-QFN48TR",
  "brief": "XHSC Microcontrollers (MCU/MPU/SOC), QFN-48(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "embedded processors & controllers",
    "hc32f451jeub-qfn48tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "HC32F451JEUB-QFN48TR",
    "manufacturer": "XHSC",
    "package": "QFN-48(5x5)",
    "pin_count": 49,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590456248492449793",
    "parts": {
      "symbol": "hc32f451jeub-qfn48tr.kicad_sym",
      "footprint": "hc32f451jeub-qfn48tr.kicad_mod",
      "model_3d": "hc32f451jeub-qfn48tr-hero.glb",
      "model_3d_plain": "hc32f451jeub-qfn48tr-etched.glb",
      "model_3d_step": "hc32f451jeub-qfn48tr-etched.step",
      "model_3d_step_plain": "hc32f451jeub-qfn48tr.step",
      "lbr": "hc32f451jeub-qfn48tr.lbr"
    },
    "distributor_links": {
      "lcsc": "C5263754"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T03:52:06Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PH2",
        "type": "bidirectional",
        "description": "General-purpose I/O PH2 with pull-up, push-pull or open-drain output and low/medium/high drive, 5 V tolerant as a digital input; alternate functions include EIRQ2 and SDIO2_D4/I2S3_EXCK."
      },
      {
        "number": "2",
        "name": "PC13",
        "type": "bidirectional",
        "description": "General-purpose I/O PC13 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as a digital input; alternate functions include EIRQ13, RTC_OUT and I2S3_MCK."
      },
      {
        "number": "3",
        "name": "PC14/XTAL32_OUT",
        "type": "output",
        "description": "Output of the 32.768 kHz low-speed crystal oscillator (XTAL32) that must be loaded with capacitors CL1/CL2 close to the pin; the pin can also be used as GPIO PC14 with EIRQ14."
      },
      {
        "number": "4",
        "name": "PC15/XTAL32_IN",
        "type": "input",
        "description": "Input of the 32.768 kHz low-speed crystal oscillator (XTAL32), with capacitors CL1/CL2 placed as close as possible to the oscillator pins; the pin can also be used as GPIO PC15 with EIRQ15."
      },
      {
        "number": "5",
        "name": "PH0/XTAL_EXT/XTAL_OUT",
        "type": "bidirectional",
        "description": "High-speed external clock pin: XTAL_EXT external clock input (1-25 MHz, 40-60 % duty, 5 ns max rise/fall) in bypass mode, or XTAL_OUT of the 4-25 MHz crystal oscillator; the pin can also be used as GPIO PH0 with EIRQ0."
      },
      {
        "number": "6",
        "name": "PH1/XTAL_IN",
        "type": "bidirectional",
        "description": "Input of the 4-25 MHz high-speed crystal/ceramic resonator oscillator (XTAL_IN), with load capacitors placed close to the oscillator pins; the pin can also be used as GPIO PH1 with EIRQ1."
      },
      {
        "number": "7",
        "name": "NRST",
        "type": "input",
        "description": "Active-low reset input; keep it pulled up to VCC through a resistor when not used, and the reset low pulse must be at least 500 ns."
      },
      {
        "number": "8",
        "name": "AVSS/VREFL",
        "type": "power_in",
        "description": "Analog ground and low reference voltage, which must be at the same potential as VSS; tie it to VSS when the analog modules are not used."
      },
      {
        "number": "9",
        "name": "AVCC/VREFH",
        "type": "power_in",
        "description": "Analog supply 1.8-3.6 V that must equal VCC, and the ADC high reference VREFH that must not exceed AVCC (VAVCC-VREFH must be below 1.2 V); tie it to AVCC when the ADC is not used."
      },
      {
        "number": "10",
        "name": "PA0/ADC1_IN0",
        "type": "bidirectional",
        "description": "General-purpose I/O PA0 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC1_IN0 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "11",
        "name": "PA1/ADC1_IN1",
        "type": "bidirectional",
        "description": "General-purpose I/O PA1 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC1_IN1 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "12",
        "name": "PA2/ADC1_IN2",
        "type": "bidirectional",
        "description": "General-purpose I/O PA2 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC1_IN2 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "13",
        "name": "PA3/ADC1_IN3",
        "type": "bidirectional",
        "description": "General-purpose I/O PA3 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC1_IN3 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "14",
        "name": "PA4/ADC12_IN4",
        "type": "bidirectional",
        "description": "General-purpose I/O PA4 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC12_IN4 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "15",
        "name": "PA5/ADC12_IN5",
        "type": "bidirectional",
        "description": "General-purpose I/O PA5 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC12_IN5 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "16",
        "name": "PA6/ADC12_IN6",
        "type": "bidirectional",
        "description": "General-purpose I/O PA6 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC12_IN6 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "17",
        "name": "PA7/ADC12_IN7",
        "type": "bidirectional",
        "description": "General-purpose I/O PA7 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC12_IN7 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "18",
        "name": "PB0/ADC12_IN8",
        "type": "bidirectional",
        "description": "General-purpose I/O PB0 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC12_IN8 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "19",
        "name": "PB1/ADC12_IN9",
        "type": "bidirectional",
        "description": "General-purpose I/O PB1 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; as ADC12_IN9 analog input its voltage must not exceed VREFH/AVCC."
      },
      {
        "number": "20",
        "name": "PB2/PVD2EXINP",
        "type": "bidirectional",
        "description": "General-purpose I/O PB2 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; when PVD2 is set to external input mode this pin is the PVD2EXINP comparison voltage input."
      },
      {
        "number": "21",
        "name": "PB10",
        "type": "bidirectional",
        "description": "General-purpose I/O PB10 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ10, ADTRG2 and I2S3_EXCK."
      },
      {
        "number": "22",
        "name": "VCAP_1",
        "type": "passive",
        "description": "Core voltage decoupling pin: connect a 0.1 µF or 0.22 µF capacitor (ESR < 0.3 Ω) close to a VSS pin to stabilize the core voltage."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; 0 V reference for the device supply, to be connected to the external ground."
      },
      {
        "number": "24",
        "name": "VCC",
        "type": "power_in",
        "description": "Main supply pin, 1.8 V to 3.6 V, decoupled with capacitors close to the adjacent VSS pin (one 4.7 µF ceramic capacitor must be connected to a VCC pin)."
      },
      {
        "number": "25",
        "name": "PB12",
        "type": "bidirectional",
        "description": "General-purpose I/O PB12 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ12, VCOUT1 and I2S3_MCK."
      },
      {
        "number": "26",
        "name": "PB13",
        "type": "bidirectional",
        "description": "General-purpose I/O PB13 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ13, VCOUT2 and QSPI_QSIO0."
      },
      {
        "number": "27",
        "name": "PB14",
        "type": "bidirectional",
        "description": "General-purpose I/O PB14 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ14, VCOUT3 and QSPI_QSCK."
      },
      {
        "number": "28",
        "name": "PB15",
        "type": "bidirectional",
        "description": "General-purpose I/O PB15 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ15, RTC_OUT and USART3_CK."
      },
      {
        "number": "29",
        "name": "PA8",
        "type": "bidirectional",
        "description": "General-purpose I/O PA8 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ8/WKUP2_0, MCO_1 and USBFS_SOF."
      },
      {
        "number": "30",
        "name": "PA9/USBFS_VBUS",
        "type": "bidirectional",
        "description": "General-purpose I/O PA9 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate function USBFS_VBUS is the USB FS VBUS signal input."
      },
      {
        "number": "31",
        "name": "PA10/USBFS_ID",
        "type": "bidirectional",
        "description": "General-purpose I/O PA10 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate function USBFS_ID is the USB FS ID signal."
      },
      {
        "number": "32",
        "name": "PA11/USBFS_DM",
        "type": "bidirectional",
        "description": "USB FS D- signal (on-chip full-speed PHY) that is not 5 V tolerant and whose input voltage must stay between VSS-0.3 V and 4.0 V; it supports pull-up and push-pull/open-drain output with selectable drive."
      },
      {
        "number": "33",
        "name": "PA12/USBFS_DP",
        "type": "bidirectional",
        "description": "USB FS D+ signal (on-chip full-speed PHY) that is not 5 V tolerant and whose input voltage must stay between VSS-0.3 V and 4.0 V; it supports pull-up and push-pull/open-drain output with selectable drive."
      },
      {
        "number": "34",
        "name": "PA13/JTMS_SWDIO",
        "type": "bidirectional",
        "description": "General-purpose I/O PA13 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; in debug mode this pin is the JTMS/SWDIO serial-wire debug data line."
      },
      {
        "number": "35",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; 0 V reference for the device supply, to be connected to the external ground."
      },
      {
        "number": "36",
        "name": "VCC",
        "type": "power_in",
        "description": "Main supply pin, 1.8 V to 3.6 V, decoupled with capacitors close to the adjacent VSS pin."
      },
      {
        "number": "37",
        "name": "PA14/JTCK_SWCLK",
        "type": "bidirectional",
        "description": "General-purpose I/O PA14 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; in debug mode this pin is the JTCK/SWCLK serial-wire clock input."
      },
      {
        "number": "38",
        "name": "PA15/JTDI",
        "type": "bidirectional",
        "description": "General-purpose I/O PA15 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; in debug mode this pin is the JTDI JTAG data input."
      },
      {
        "number": "39",
        "name": "PB3/JTDO_TRACESWO",
        "type": "bidirectional",
        "description": "General-purpose I/O PB3 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; in debug mode this pin is the JTDO/TRACESWO output."
      },
      {
        "number": "40",
        "name": "PB4/NJTRST",
        "type": "bidirectional",
        "description": "General-purpose I/O PB4 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; in debug mode this pin is the NJTRST JTAG reset input."
      },
      {
        "number": "41",
        "name": "PB5",
        "type": "bidirectional",
        "description": "General-purpose I/O PB5 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ5/WKUP1_1, SDIO1_D3 and I2S4_EXCK."
      },
      {
        "number": "42",
        "name": "PB6",
        "type": "bidirectional",
        "description": "General-purpose I/O PB6 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ6/WKUP1_2, ADTRG2 and I2S4_MCK."
      },
      {
        "number": "43",
        "name": "PB7",
        "type": "bidirectional",
        "description": "General-purpose I/O PB7 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ7/WKUP1_3, ADTRG1 and SDIO1_D0."
      },
      {
        "number": "44",
        "name": "PB11/MD",
        "type": "input",
        "description": "Mode input fixed as an input-only pin that must be held high when NRST is released, with a recommended 4.7 kΩ pull-up to VCC; it is 5 V tolerant and has no output function."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "General-purpose I/O PB8 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ8, KEYOUT7 and USBFS_DRVVBUS."
      },
      {
        "number": "46",
        "name": "PB9",
        "type": "bidirectional",
        "description": "General-purpose I/O PB9 with pull-up, push-pull or open-drain output and selectable drive, 5 V tolerant as digital input; alternate functions include EIRQ9, SPI2_SS1 and KEYOUT6."
      },
      {
        "number": "47",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground pin; 0 V reference for the device supply, to be connected to the external ground."
      },
      {
        "number": "48",
        "name": "VCC",
        "type": "power_in",
        "description": "Main supply pin, 1.8 V to 3.6 V, decoupled with capacitors close to the adjacent VSS pin."
      },
      {
        "number": "49",
        "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: Pin 22 VCAP_1 is listed as 'IO' (core voltage) in datasheet Table 2-5; I mapped it to KiCad 'passive; Pin 9 is printed as 'AVCC/VREFH' in the QFN48 pin diagram (Figure 2-1) and the AVCC row of Table 2-1; Pin descriptions are a single sentence summarizing general port limits (Table 2-4 and Table 2-6) plu",
          "exposed pad 49 added from the footprint",
          "7/49 pins cited to the wrong page (name found elsewhere): ['9:AVCC/VREFH@p39', '22:VCAP_1@p39', '23:VSS@p39', '24:VCC@p39']"
        ],
        "pages_sent": 68,
        "cost_usd": 0.301,
        "at": "2026-10-18T03:47:51"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590456248492449793",
        "pages": 97,
        "sha256": "66fdc58cad687d2f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 49,
        "described": 49,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "hc32f451jeub-qfn48tr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "bdef7330531c8a62fd1740be5d4ee88a2520275cd173f5de2a729248fb1c21a0",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "hc32f451jeub-qfn48tr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5,
          5,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3b4180ef9ca498eefb10e5ccba4990c623de94b9a6b235f8afa881c78747f15d",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "XHSC",
      "Package": "QFN-48(5x5)",
      "Category": "Embedded Processors & Controllers",
      "Pins": "49"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "66fdc58cad687d2f9697db94b5a55e8032f41859062789bb834828ad8a8b4b82",
      "rows": [
        {
          "name": "系统电源（Vcc）工作电压 / Supply voltage",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1.8,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "环境温度范围 / Operating temperature range (B: industrial)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "PLL PFD input clock",
          "symbol": "fPLL_IN",
          "kind": "electrical",
          "unit": "MHz",
          "min": 1,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 73,
          "source": "datasheet"
        },
        {
          "name": "PLL multiplier output clock",
          "symbol": "fPLL_OUT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 15,
          "typ": null,
          "max": 240,
          "conditions": "",
          "source_page": 73,
          "source": "datasheet"
        },
        {
          "name": "PLL VCO output",
          "symbol": "fVCO_OUT",
          "kind": "electrical",
          "unit": "MHz",
          "min": 240,
          "typ": null,
          "max": 480,
          "conditions": "",
          "source_page": 73,
          "source": "datasheet"
        },
        {
          "name": "PLL lock time",
          "symbol": "tLOCK",
          "kind": "timing",
          "unit": "µs",
          "min": null,
          "typ": 80,
          "max": 120,
          "conditions": "",
          "source_page": 73,
          "source": "datasheet"
        },
        {
          "name": "USB FS 工作电压 / VCC",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 71,
          "source": "datasheet"
        },
        {
          "name": "USB FS 输入低电平",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "",
          "source_page": 71,
          "source": "datasheet"
        },
        {
          "name": "USB FS 输入高电平",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 71,
          "source": "datasheet"
        },
        {
          "name": "USB FS 差分输入灵敏度",
          "symbol": "VDI",
          "kind": "electrical",
          "unit": "V",
          "min": 0.2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 71,
          "source": "datasheet"
        },
        {
          "name": "USB FS 差分共模电压",
          "symbol": "VCM",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 2.5,
          "conditions": "",
          "source_page": 71,
          "source": "datasheet"
        },
        {
          "name": "USB FS 静态输出低电平",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "RL=1.5kΩ to 3.6V",
          "source_page": 71,
          "source": "datasheet"
        },
        {
          "name": "USB FS 静态输出高电平",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.8,
          "typ": null,
          "max": 3.6,
          "conditions": "RL=15kΩ to VSS",
          "source_page": 71,
          "source": "datasheet"
        },
        {
          "name": "USB FS Cross-over电压",
          "symbol": "VCRS",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
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