AT32F425F8P7

{
  "schema_version": 1,
  "type": "component",
  "slug": "at32f425f8p7",
  "title": "AT32F425F8P7",
  "brief": "ARTERY Microcontroller Units (MCUs/MPUs/SOCs), TSSOP-20. 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",
    "single chip microcomputer-microcontroller",
    "at32f425f8p7",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AT32F425F8P7",
    "manufacturer": "ARTERY",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/907d497e688dd3109d5c2414ed742864.pdf",
    "parts": {
      "symbol": "at32f425f8p7.kicad_sym",
      "footprint": "at32f425f8p7.kicad_mod",
      "model_3d": "at32f425f8p7-hero.glb",
      "model_3d_plain": "at32f425f8p7-etched.glb",
      "model_3d_step": "at32f425f8p7-etched.step",
      "model_3d_step_plain": "at32f425f8p7.step",
      "lbr": "at32f425f8p7.lbr"
    },
    "distributor_links": {
      "lcsc": "C4153157"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T01:41:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT0",
        "type": "input",
        "description": "Dedicated boot mode select pin 0 with a built-in weak pull-down that cannot be disabled; together with user system data bit nBOOT1 it selects the boot source at startup."
      },
      {
        "number": "2",
        "name": "PF0",
        "type": "bidirectional",
        "description": "Standard-level (TC) I/O with input voltage limited to VSS-0.3 to 4.0 V, not 5 V tolerant; alternate function TMR1_CH1, additional function HEXT_IN."
      },
      {
        "number": "3",
        "name": "PF1",
        "type": "bidirectional",
        "description": "Standard-level (TC) I/O with input voltage limited to VSS-0.3 to 4.0 V, not 5 V tolerant; alternate functions TMR1_CH2C, SPI2_CS and I2S2_WS, additional function HEXT_OUT."
      },
      {
        "number": "4",
        "name": "NRST",
        "type": "bidirectional",
        "description": "Active-low device reset input and internal reset output with an internal pull-up (RPU 30 to 50 kΩ) that cannot be disconnected; VIL max 0.8 V and VIH min 2 V."
      },
      {
        "number": "5",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog supply for the ADC, 2.4 to 3.6 V, which must be at the same potential as VDD."
      },
      {
        "number": "6",
        "name": "PA0",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN0 and WKUP1."
      },
      {
        "number": "7",
        "name": "PA1",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN1."
      },
      {
        "number": "8",
        "name": "PA2",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN2 and WKUP4, and USART2_TX is used for bootloader."
      },
      {
        "number": "9",
        "name": "PA3",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN3, and USART2_RX is used for bootloader."
      },
      {
        "number": "10",
        "name": "PA4",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN4."
      },
      {
        "number": "11",
        "name": "PA5",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN5."
      },
      {
        "number": "12",
        "name": "PA6",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN6."
      },
      {
        "number": "13",
        "name": "PA7",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN7."
      },
      {
        "number": "14",
        "name": "PB1",
        "type": "bidirectional",
        "description": "FTa I/O that is 5 V tolerant only in input float, pull-up or pull-down mode (in analog mode the input must stay below VDD+0.3 V); provides ADC1_IN9."
      },
      {
        "number": "15",
        "name": "VSS",
        "type": "power_in",
        "description": "Digital ground pin."
      },
      {
        "number": "16",
        "name": "VDD",
        "type": "power_in",
        "description": "Digital supply pin, 2.4 to 3.6 V, supplying GPIO, ERTC, LEXT, BPR and the internal LDO."
      },
      {
        "number": "17",
        "name": "PA9 (PA11)",
        "type": "bidirectional",
        "description": "TC-type I/O that is not 5 V tolerant on TSSOP20; default function PA9 (USART1_TX, TMR15_BRK, I2C1_SCL), and when OTGFS1 is not used PA11 can be remapped onto this pin by software, while OTGFS1_D- takes over the pin when OTGFS1 is enabled."
      },
      {
        "number": "18",
        "name": "PA10 (PA12)",
        "type": "bidirectional",
        "description": "TC-type I/O that is not 5 V tolerant on TSSOP20; default function PA10 (USART1_RX, TMR17_BRK, I2C1_SDA), and when OTGFS1 is not used PA12 can be remapped onto this pin by software, while OTGFS1_D+ takes over the pin when OTGFS1 is enabled."
      },
      {
        "number": "19",
        "name": "PA13",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that after reset is configured as SWDIO with its internal pull-up enabled; alternate functions include IR_OUT, OTGFS1_OE and I2C1_SDA."
      },
      {
        "number": "20",
        "name": "PA14",
        "type": "bidirectional",
        "description": "5 V tolerant FT I/O that after reset is configured as SWCLK with its internal pull-down enabled; alternate functions include USART2_TX, SPI3_MOSI and I2C1_SMBA."
      }
    ],
    "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 17 and pin 18 each appear in two rows of Table 5 (PA9/PA11 and PA10/PA12). Footnote 3 on page 30; Footnote 4 (page 30) says the TSSOP20 PA9/PA10 pins do not have 5 V tolerance, so these pins are TC-; NRST is printed as I/O type R (bidirectional reset pin with internal pull-up). It is mapped as bidir"
        ],
        "pages_sent": 71,
        "cost_usd": 0.2215,
        "at": "2026-11-05T01:40:57"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/907d497e688dd3109d5c2414ed742864.pdf",
        "pages": 79,
        "sha256": "eaf33a9399a9b187",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "at32f425f8p7.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "at32f425f8p7-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "8e4b7bf4f30d5ffcd563da5a7c8c3e55748e3ce503a0a94346f1b35b405a1c75",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "TSSOP20",
      "source_page": 74,
      "D": {
        "nom_mm": 6.5,
        "range_mm": [
          6.4,
          6.6
        ]
      },
      "E1": {
        "nom_mm": 4.4,
        "range_mm": [
          4.3,
          4.5
        ]
      },
      "E": {
        "nom_mm": 6.4,
        "range_mm": [
          6.2,
          6.6
        ]
      },
      "e": {
        "nom_mm": 0.65,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.2,
        "range_mm": [
          null,
          1.2
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "at32f425f8p7.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "ARTERY",
      "Package": "TSSOP-20",
      "Category": "Single Chip Microcomputer/Microcontroller",
      "Pins": "20"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "eaf33a9399a9b187fc1d9c0cbbac05c2b83ec0abdc692217cbf30d5918d3b4ad",
      "rows": [
        {
          "name": "External main supply voltage VDDx-VSS",
          "symbol": "VDDx-VSS",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Voltage difference between supply pins |ΔVDDx|",
          "symbol": "|ΔVDDx|",
          "kind": "absolute_maximum",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Voltage difference between ground pins |VSSx-VSS|",
          "symbol": "|VSSx-VSS|",
          "kind": "absolute_maximum",
          "unit": "mV",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Total external supply current IVDD (incl. VDDA and VDD)",
          "symbol": "IVDD",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Total current through VSS ground line (outflow)",
          "symbol": "IVSS",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Output sink current on any GPIO and control pin",
          "symbol": "IIO",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Output current on any GPIO and control pin",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": -25,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range TSTG",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -60,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Maximum junction temperature TJ",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage VDD (2.4 V to 3.6 V power supply)",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "CPU maximum operating frequency",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": null,
          "typ": null,
          "max": 96,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "HEXT crystal oscillator frequency",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 4,
          "typ": null,
          "max": 25,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "HICK 48 MHz internal clock frequency accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "25 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "HICK 48 MHz internal clock frequency accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "-40 °C to +105 °C",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "ADC analog supply voltage VDDA",
          "symbol": "VDDA",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC current in VDDA input pin IDDA",
          "symbol": "IDDA",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 295,
          "max": 355,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC clock frequency fADC",
          "symbol": "fADC",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.6,
          "typ": null,
          "max": 28,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC sampling rate fS",
          "symbol": "fS",
          "kind": "electrical",
          "unit": "MHz",
          "min": 0.05,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC external trigger frequency fTRIG",
          "symbol": "fTRIG",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": null,
          "max": 1.65,
          "conditions": "fADC = 28 MHz",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC internal sample-and-hold capacitance CADC",
          "symbol": "CADC",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 8.5,
          "max": 13,
          "conditions": "",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC sampling time tS",
          "symbol": "tS",
          "kind": "timing",
          "unit": "μs",
          "min": 0.053,
          "typ": null,
          "max": 8.55,
          "conditions": "fADC = 28 MHz",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC total conversion time tCONV (incl. sampling time)",
          "symbol": "tCONV",
          "kind": "timing",
          "unit": "μs",
          "min": 0.5,
          "typ": null,
          "max": 9,
          "conditions": "fADC = 28 MHz",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "ADC trigger conversion latency tlatr",
          "symbol": "tlatr",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 71.4,
          "conditions": "fADC = 28 MHz",
          "source_page": 58,
          "source": "datasheet"
        },
        {
          "name": "OTGFS operating voltage VDD",
          "symbol": "VDD",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS transceiver startup time tSTARTUP",
          "symbol": "tSTARTUP",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS differential input sensitivity VDI",
          "symbol": "VDI",
          "kind": "electrical",
          "unit": "V",
          "min": 0.2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS differential common-mode range VCM",
          "symbol": "VCM",
          "kind": "electrical",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 2.5,
          "conditions": "includes VDI range",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS single-ended receiver threshold VSE",
          "symbol": "VSE",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS static output low level VOL",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.3,
          "conditions": "1.24 kΩ RL to 3.6 V",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS static output high level VOH",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.8,
          "typ": null,
          "max": 3.6,
          "conditions": "15 kΩ RL to VSS",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS_D+ internal pull-up resistance RPU",
          "symbol": "RPU",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 0.97,
          "typ": 1.24,
          "max": 1.58,
          "conditions": "VIN = VSS",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS_D+/D- internal pull-down resistance RPD",
          "symbol": "RPD",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 15,
          "typ": 19,
          "max": 25,
          "conditions": "VIN = VDD",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS data rise time tr",
          "symbol": "tr",
          "kind": "timing",
          "unit": "ns",
          "min": 4,
          "typ": null,
          "max": 20,
          "conditions": "CL ≤ 50 pF",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS data fall time tf",
          "symbol": "tf",
          "kind": "timing",
          "unit": "ns",
          "min": 4,
          "typ": null,
          "max": 20,
          "conditions": "CL ≤ 50 pF",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS rise/fall time matching tr/tf",
          "symbol": "trfm",
          "kind": "timing",
          "unit": "%",
          "min": 90,
          "typ": null,
          "max": 110,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
        },
        {
          "name": "OTGFS output signal crossover voltage VCRS",
          "symbol": "VCRS",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 57,
          "source": "datasheet"
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