ATTINY25-20SSU

{
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  "type": "component",
  "slug": "attiny25-20ssu",
  "title": "ATTINY25-20SSU",
  "brief": "Microchip Tech MICROCHIP, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "embedded processors & controllers",
    "attiny25-20ssu",
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  "component": {
    "mpn": "ATTINY25-20SSU",
    "manufacturer": "Microchip Tech",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Embedded Processors & Controllers",
    "subcategory": "MICROCHIP",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5a7a5ae9ce46f3b6b802150883355e0a.pdf",
    "parts": {
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      "footprint": "attiny25-20ssu.kicad_mod",
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      "model_3d_plain": "attiny25-20ssu.glb",
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      "model_3d_step_plain": "attiny25-20ssu.step",
      "lbr": "attiny25-20ssu.lbr"
    },
    "distributor_links": {
      "lcsc": "C1338203",
      "digikey": "ATTINY25-20SSU-ND",
      "mouser": "556-ATTINY25-20SSU"
    },
    "distributor_check": {
      "checked_at": "2026-11-05T17:19:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "ATTINY25-20SSU-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "556-ATTINY25-20SSU",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB5",
        "type": "bidirectional",
        "description": "Port B bit 5 with reset function: a low level longer than the minimum pulse length generates a reset, and the pin can also be used as a weak I/O pin."
      },
      {
        "number": "2",
        "name": "PB3",
        "type": "bidirectional",
        "description": "Port B bit 3 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability."
      },
      {
        "number": "3",
        "name": "PB4",
        "type": "bidirectional",
        "description": "Port B bit 4 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "5",
        "name": "PB0",
        "type": "bidirectional",
        "description": "Port B bit 0 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability."
      },
      {
        "number": "6",
        "name": "PB1",
        "type": "bidirectional",
        "description": "Port B bit 1 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability."
      },
      {
        "number": "7",
        "name": "PB2",
        "type": "bidirectional",
        "description": "Port B bit 2 is a bi-directional I/O pin with internal pull-up selectable per bit, with symmetrical high sink and source drive capability."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage: 2.7 - 5.5V for ATtiny25/45/85 (1.8 - 5.5V for the ATtiny25V/45V/85V)."
      }
    ],
    "provenance": {
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      "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: ATTINY25-20SSU is listed on page 11 under package code S8S1 (8-lead, 0.150\" wide JEDEC SOIC), not th; Page 3 notes that PB3 and PB4 (pins 2 and 3) are exchanged in ATtiny15 Compatibility Mode on the ATt"
        ],
        "pages_sent": 19,
        "cost_usd": 0.075,
        "at": "2026-11-05T17:19:00"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5a7a5ae9ce46f3b6b802150883355e0a.pdf",
        "pages": 30,
        "sha256": "31cd54bf6623a7ca",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
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        "checked": "2026-11-05",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "S8S1",
      "source_page": 16,
      "D": {
        "nom_mm": 4.89,
        "range_mm": [
          4.8,
          4.98
        ]
      },
      "E1": {
        "nom_mm": 3.9,
        "range_mm": [
          3.81,
          3.99
        ]
      },
      "E": {
        "nom_mm": 5.995,
        "range_mm": [
          5.79,
          6.2
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.55,
        "range_mm": [
          1.35,
          1.75
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "attiny25-20ssu.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOIC-8",
      "Category": "Embedded Processors & Controllers",
      "Pins": "8"
    },
    "appearance": {
      "contacts": {
        "quote": "3. Code indicators: H = NiPdAu lead finish, U/N = matte tin, R = tape & reel. 4. Can also be supplied in wafer form. Contact your local Atmel sales office for ordering information and minimum quantiti",
        "page": 11,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "31cd54bf6623a7ca73d6dad8be3fe398c0d731c443175202e42dd2a976e79990"
    },
    "characteristics": {
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        {
          "name": "Supply voltage (ATtiny25, 20 MHz grade, Industrial)",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "ATtiny25-20 ordering code, 20 MHz speed grade",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Operating frequency vs. supply voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 0,
          "typ": null,
          "max": 10,
          "conditions": "2.7 - 5.5 V",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating frequency vs. supply voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "MHz",
          "min": 0,
          "typ": null,
          "max": 20,
          "conditions": "4.5 - 5.5 V",
          "source_page": 1,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range (Industrial)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Industrial grade, ATtiny25-20SSU ordering code",
          "source_page": 11,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "ATTINY25-20SSU (Microchip Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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  "description": "Microchip Tech MICROCHIP, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "org": "adom"
}