MPC89E54AF

{
  "slug": "mpc89e54af",
  "version": "0.1.0",
  "type": "component",
  "description": "Megawin Tech Microcontroller Units (MCUs/MPUs/SOCs), PQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "embedded processors & controllers",
    "mpc89e54af",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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  "component": {
    "mpn": "MPC89E54AF",
    "manufacturer": "Megawin Tech",
    "package": "PQFP-44(10x10)",
    "pin_count": 44,
    "category": "Embedded Processors & Controllers",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2b0f68327d410a80805ac2b386e05874.pdf",
    "parts": {
      "symbol": "mpc89e54af.kicad_sym",
      "footprint": "mpc89e54af.kicad_mod",
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      "model_3d_step_plain": "mpc89e54af.step",
      "lbr": "mpc89e54af.lbr"
    },
    "distributor_links": {
      "lcsc": "C202882"
    },
    "distributor_check": {
      "checked_at": "2026-10-24T03:09:39Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "P1.5",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
      },
      {
        "number": "2",
        "name": "P1.6",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
      },
      {
        "number": "3",
        "name": "P1.7",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
      },
      {
        "number": "4",
        "name": "RESET",
        "type": "input",
        "description": "A high level lasting more than 2 machine cycles resets the chip; has an internal pull-down resistor."
      },
      {
        "number": "5",
        "name": "P3.0(RXD)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function RXD serial input."
      },
      {
        "number": "6",
        "name": "P4.3(/INT2)",
        "type": "bidirectional",
        "description": "Port 4 bidirectional I/O with pull-up (PLCC-44/PQFP-44 only); alternate function external interrupt /INT2 input."
      },
      {
        "number": "7",
        "name": "P3.1(TXD)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function TXD serial output."
      },
      {
        "number": "8",
        "name": "P3.2(INT0)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function external interrupt 0 input."
      },
      {
        "number": "9",
        "name": "P3.3(INT1)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function external interrupt 1 input."
      },
      {
        "number": "10",
        "name": "P3.4(T0)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function Timer 0 external input."
      },
      {
        "number": "11",
        "name": "P3.5(T1)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function Timer 1 external input."
      },
      {
        "number": "12",
        "name": "P3.6(/WR)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function external data memory write strobe."
      },
      {
        "number": "13",
        "name": "P3.7(/RD)",
        "type": "bidirectional",
        "description": "Port 3 bidirectional I/O with internal pull-up; alternate function external data memory read strobe."
      },
      {
        "number": "14",
        "name": "XTAL2",
        "type": "output",
        "description": "Crystal oscillator output."
      },
      {
        "number": "15",
        "name": "XTAL1",
        "type": "input",
        "description": "Crystal oscillator input."
      },
      {
        "number": "16",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "17",
        "name": "P4.0",
        "type": "bidirectional",
        "description": "Port 4 bidirectional I/O with pull-up, available only on PLCC-44 and PQFP-44 packages."
      },
      {
        "number": "18",
        "name": "P2.0(A8)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 0 when accessing external program/data memory."
      },
      {
        "number": "19",
        "name": "P2.1(A9)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 1 when accessing external program/data memory."
      },
      {
        "number": "20",
        "name": "P2.2(A10)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 2 when accessing external program/data memory."
      },
      {
        "number": "21",
        "name": "P2.3(A11)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 3 when accessing external program/data memory."
      },
      {
        "number": "22",
        "name": "P2.4(A12)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 4 when accessing external program/data memory."
      },
      {
        "number": "23",
        "name": "P2.5(A13)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 5 when accessing external program/data memory."
      },
      {
        "number": "24",
        "name": "P2.6(A14)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 6 when accessing external program/data memory."
      },
      {
        "number": "25",
        "name": "P2.7(A15)",
        "type": "bidirectional",
        "description": "Port 2 bidirectional I/O with internal pull-up; outputs high address byte bit 7 when accessing external program/data memory."
      },
      {
        "number": "26",
        "name": "/PSEN",
        "type": "output",
        "description": "Program store enable, activated twice per machine cycle when executing external program code and inactive for external data access or internal program access."
      },
      {
        "number": "27",
        "name": "ALE",
        "type": "output",
        "description": "Outputs a pulse to latch the low address byte when accessing external memory."
      },
      {
        "number": "28",
        "name": "P4.1",
        "type": "bidirectional",
        "description": "Port 4 bidirectional I/O with pull-up, available only on PLCC-44 and PQFP-44 packages."
      },
      {
        "number": "29",
        "name": "/EA",
        "type": "input",
        "description": "External access enable; must be externally held low to access all external program memory, and when high internal program runs unless the PC exceeds the on-chip FLASH address."
      },
      {
        "number": "30",
        "name": "P0.7(AD7)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 7 for external memory."
      },
      {
        "number": "31",
        "name": "P0.6(AD6)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 6 for external memory."
      },
      {
        "number": "32",
        "name": "P0.5(AD5)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 5 for external memory."
      },
      {
        "number": "33",
        "name": "P0.4(AD4)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 4 for external memory."
      },
      {
        "number": "34",
        "name": "P0.3(AD3)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 3 for external memory."
      },
      {
        "number": "35",
        "name": "P0.2(AD2)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 2 for external memory."
      },
      {
        "number": "36",
        "name": "P0.1(AD1)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 1 for external memory."
      },
      {
        "number": "37",
        "name": "P0.0(AD0)",
        "type": "bidirectional",
        "description": "Port 0 open-drain bidirectional I/O that becomes high-impedance input when 1 is written; multiplexed address/data bit 0 for external memory."
      },
      {
        "number": "38",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply."
      },
      {
        "number": "39",
        "name": "P4.2(/INT3)",
        "type": "bidirectional",
        "description": "Port 4 bidirectional I/O with pull-up (PLCC-44/PQFP-44 only); alternate function external interrupt /INT3 input."
      },
      {
        "number": "40",
        "name": "P1.0(T2)",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; alternate function Timer 2 external count input or clock output."
      },
      {
        "number": "41",
        "name": "P1.1(T2EX)",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; alternate function Timer 2 capture/reload (interrupt control) trigger input."
      },
      {
        "number": "42",
        "name": "P1.2",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
      },
      {
        "number": "43",
        "name": "P1.3",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
      },
      {
        "number": "44",
        "name": "P1.4",
        "type": "bidirectional",
        "description": "Port 1 bidirectional I/O with internal pull-up; writing 1 pulls the pin high so it can be used as an input."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet pin table has columns DIP-40, PLCC-44 and LQFP-44 only, with no PQFP-44 column. I used; The Port 2 description in the datasheet text calls it 'Port1'. This is likely a typo, so I treated i"
        ],
        "pages_sent": 32,
        "cost_usd": 0.2537,
        "at": "2026-10-24T03:09:24"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/2b0f68327d410a80805ac2b386e05874.pdf",
        "pages": 53,
        "sha256": "59932567580ca556",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 44,
        "described": 44,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "506bc1330ff41b569f7f41ec15c74ca09b1a78d4a92948b6e8fc77180ccbde0f",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mpc89e54af-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
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        "zmin_mm": 0.0,
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        "footprint_binding": "identity",
        "sha256": "4dc6b99eb400d7316fd15001c492953e6ab08330b0bf242b9ce99f75bc48bc0e",
        "checked": "2026-10-24",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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}