23LC1024

{
  "schema_version": 1,
  "type": "component",
  "slug": "23lc1024",
  "title": "23LC1024",
  "brief": "Microchip 1 Mbit (128 KB) serial SRAM, SOIC-8. SPI/SDI/SQI, unlimited endurance, fast random access. Datasheet-verified.",
  "version": "0.1.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "memory",
    "sram",
    "spi",
    "serial-ram",
    "soic-8",
    "microchip"
  ],
  "component": {
    "mpn": "23LC1024",
    "manufacturer": "Microchip Technology",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Memory",
    "subcategory": "1 Mbit SPI SRAM",
    "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/20005142C.pdf",
    "parts": {
      "symbol": "23lc1024.kicad_sym",
      "footprint": "23lc1024.kicad_mod",
      "model_3d": "23lc1024-hero.glb",
      "model_3d_plain": "23lc1024.glb",
      "lbr": "23lc1024.lbr",
      "model_3d_step": "23lc1024-etched.step",
      "model_3d_step_plain": "23lc1024.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "CS",
        "type": "input",
        "description": "Chip Select input, active low. Bringing CS low selects the device and begins a transaction; taking CS high terminates the operation and puts the device in standby. Must be held low for the entire operation."
      },
      {
        "number": "2",
        "name": "SO/SIO1",
        "type": "bidirectional",
        "description": "Serial data output in standard SPI mode; bidirectional data line 1 in SDI (dual) and SQI (quad) modes. Data changes on the falling edge of SCK in SPI mode."
      },
      {
        "number": "3",
        "name": "SIO2",
        "type": "bidirectional",
        "description": "Bidirectional data line 2, active only in SQI (quad) mode. High-impedance in standard SPI and SDI modes."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the device (0 V)."
      },
      {
        "number": "5",
        "name": "SI/SIO0",
        "type": "bidirectional",
        "description": "Serial data input in standard SPI mode; bidirectional data line 0 in SDI and SQI modes. Instructions, addresses and write data are shifted in on the rising edge of SCK, MSB first."
      },
      {
        "number": "6",
        "name": "SCK",
        "type": "input",
        "description": "Serial clock input. Input data is latched on the rising edge; output data changes on the falling edge. Max 20 MHz (I-temp) / 16 MHz (E-temp)."
      },
      {
        "number": "7",
        "name": "HOLD/SIO3",
        "type": "bidirectional",
        "description": "In SPI / SDI mode this is the active-low HOLD input: driving HOLD low with CS low pauses serial communication without deselecting the device (SO goes high-Z, SI is ignored). In SQI (quad) mode this pin becomes bidirectional data line 3."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input. 23LC1024: 2.5 V to 5.5 V (23A1024 variant: 1.7 V to 2.2 V). Decouple with a 0.1 uF ceramic capacitor close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://ww1.microchip.com/downloads/en/DeviceDoc/20005142C.pdf",
        "pages": 32,
        "sha256": "b2f1789d475fa761",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "23lc1024.step",
        "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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "23lc1024-etched.step",
        "role": "eda",
        "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": "87793d94452e0f3c1a21ec9dac3f2fc6f1a9e54cd284019f87b5ac5904bf8de2",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Serial SRAM (volatile)",
      "Density": "1 Mbit (128 KB)",
      "Interface": "SPI / SDI (dual) / SQI (quad)",
      "Endurance": "unlimited writes",
      "Access modes": "byte / page / sequential",
      "Max clock": "20 MHz",
      "Supply voltage": "2.5-5.5 V",
      "Package": "SOIC-8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "23lc1024",
    "spi sram",
    "serial ram",
    "1mbit sram",
    "external ram"
  ],
  "discovery_pitch": "23LC1024 1 Mbit (128 KB) serial SPI SRAM (SOIC-8) with datasheet-verified pinout, KiCad footprint/3D, and full provenance.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "23lc1024.kicad_sym",
    "23lc1024.kicad_mod",
    "23lc1024.glb",
    "23lc1024.lbr",
    "docs/hero.png",
    "docs/23lc1024-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "23lc1024-etched.step",
    "23lc1024.step",
    "23lc1024-hero.glb",
    "23lc1024-hero.overlay.json"
  ],
  "description": "Microchip 1 Mbit (128 KB) serial SRAM, SOIC-8. SPI/SDI/SQI, unlimited endurance, fast random access. Datasheet-verified.",
  "visibility": "public",
  "org": "adom"
}