AD156A4

{
  "slug": "ad156a4",
  "version": "0.1.0",
  "type": "component",
  "description": "JieLi Tech Microcontrollers (MCU/MPU/SOC), QFN-32(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "ad156a4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ad156a4.kicad_sym",
    "ad156a4.kicad_mod",
    "ad156a4.glb",
    "ad156a4.step",
    "ad156a4.lbr",
    "docs/hero.png",
    "docs/ad156a4-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ad156a4-hero.glb",
    "ad156a4-hero.overlay.json",
    "ad156a4-etched.glb"
  ],
  "component": {
    "mpn": "AD156A4",
    "manufacturer": "JieLi Tech",
    "package": "QFN-32(4x4)",
    "pin_count": 33,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontrollers (MCU/MPU/SOC)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603346776296738816",
    "parts": {
      "symbol": "ad156a4.kicad_sym",
      "footprint": "ad156a4.kicad_mod",
      "model_3d": "ad156a4-hero.glb",
      "model_3d_plain": "ad156a4-etched.glb",
      "model_3d_step": "ad156a4-etched.step",
      "model_3d_step_plain": "ad156a4.step",
      "lbr": "ad156a4.lbr"
    },
    "distributor_links": {
      "lcsc": "C22440795"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:52:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PA1",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC1, SPI0CLKB, SD0CLKA, UART0RXB, I2C_SCL(B) and CAP2."
      },
      {
        "number": "2",
        "name": "PA0",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive, default pull-up, used for Long Press Reset; multiplexed with ADC0 and UART0TXB."
      },
      {
        "number": "3",
        "name": "VDDIO",
        "type": "power_out",
        "description": "Digital power pin, internal linear regulator output of 2.0 V to 3.4 V (typ 3.0 V) with up to 100 mA load at VBAT=3.7 V."
      },
      {
        "number": "4",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery power supply input, 2.0 V to 5.5 V operating, absolute maximum 5.5 V."
      },
      {
        "number": "5",
        "name": "DACP",
        "type": "output",
        "description": "Class-D audio power amplifier positive output."
      },
      {
        "number": "6",
        "name": "DACN",
        "type": "output",
        "description": "Class-D audio power amplifier negative output."
      },
      {
        "number": "7",
        "name": "PB11",
        "type": "bidirectional",
        "description": "High-voltage-resistance GPIO with 8 mA drive; also OSCIB crystal oscillator input (B)."
      },
      {
        "number": "8",
        "name": "PB10",
        "type": "bidirectional",
        "description": "High-voltage-resistance GPIO with 8 mA drive, default pull-up; also MCLR (active low reset)."
      },
      {
        "number": "9",
        "name": "PB9",
        "type": "bidirectional",
        "description": "High-voltage-resistance GPIO with 8 mA drive; multiplexed with SPI1DOD, UART1TRXB, I2C_SDA(D) and CAP1."
      },
      {
        "number": "10",
        "name": "PB8",
        "type": "bidirectional",
        "description": "High-voltage-resistance GPIO with 8 mA drive; multiplexed with SPI1CLKD, I2C_SCL(D) and OSCIA crystal oscillator input (A)."
      },
      {
        "number": "11",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; also SPI1DID (SPI1 data in D)."
      },
      {
        "number": "12",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; also SD0DATC (SD0 data C)."
      },
      {
        "number": "13",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC13 and SD0CMDC."
      },
      {
        "number": "14",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC12 and SD0CLKC."
      },
      {
        "number": "15",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; also TDM_MCLK."
      },
      {
        "number": "16",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with SPI1DIA, SD0DATB and TDM_DAT."
      },
      {
        "number": "17",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive, default pull-down; multiplexed with ADC11, SPI1DOA, SD0CMDB, I2C_SDA(A) and TDM_SYN."
      },
      {
        "number": "18",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive, default pull-down; multiplexed with ADC10, SPI1CLKA, SD0CLKB, I2C_SCL(A) and TDM_CLK."
      },
      {
        "number": "19",
        "name": "PA15",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC9, SPI1DOB and MCAP3."
      },
      {
        "number": "20",
        "name": "PA14",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC8, SPI1CLKB, CAP0 and MCAP2."
      },
      {
        "number": "21",
        "name": "PA13",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with SPI1DIB, TMR1 and MCAP1."
      },
      {
        "number": "22",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; also MPWM3 (PWM channel 3 output)."
      },
      {
        "number": "23",
        "name": "PA11",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with TMR0 and MPWM2."
      },
      {
        "number": "24",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; no alternate functions listed."
      },
      {
        "number": "25",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; no alternate functions listed."
      },
      {
        "number": "26",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with SPI1DIC and SD0DATD."
      },
      {
        "number": "27",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC7, SPI1DOC, SD0CMDD, UART0RXA, I2C_SDA(C) and MPWM1."
      },
      {
        "number": "28",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC6, SPI1CLKC, SD0CLKD, UART0TXA, I2C_SCL(C), TMR2 and MPWM0."
      },
      {
        "number": "29",
        "name": "PA5",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC5, SPI0DAT3 and UART1RXA."
      },
      {
        "number": "30",
        "name": "PA4",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC4, SPI0DAT2, UART1TXA and LVD (low voltage detect)."
      },
      {
        "number": "31",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC3, SPI0DIB(1), SD0DATA, CLKOUT, PWM2(B) and MCAP0."
      },
      {
        "number": "32",
        "name": "PA2",
        "type": "bidirectional",
        "description": "GPIO with 8/64 mA drive; multiplexed with ADC2, SPI0DOB(0), SD0CMDA, I2C_SDA(B) and PWM2(A)."
      },
      {
        "number": "33",
        "name": "VSS",
        "type": "power_in",
        "description": "Exposed ground pad (PAD VSS)."
      }
    ],
    "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: The exposed pad is printed as 'PAD' in Table 1-1 rather than a numbered pin; it is listed as VSS gro; Table 1-1 gives VDDIO type as 'P' (power) and describes it as the internal linear regulator output. ; PB10 is listed as I/O in Table 1-1 but its function is MCLR (active low). Recorded as bidirectional ",
          "exposed pad 33 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0637,
        "at": "2026-10-18T09:50:10"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603346776296738816",
        "pages": 10,
        "sha256": "3fcbf159b92a3850",
        "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": "ad156a4.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.6
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ad156a4-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.6
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7cfe259052c86dce3472ad956ac5a845a8567b1dc8085357e5e2e75353ac5f98",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}