CM2056-B5S

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  "type": "component",
  "slug": "cm2056-b5s",
  "title": "CM2056-B5S",
  "brief": "iCM(创芯微) , SSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "ic",
    "cm2056-b5s",
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  "component": {
    "mpn": "CM2056-B5S",
    "manufacturer": "iCM(创芯微)",
    "package": "SSOP-24",
    "pin_count": 24,
    "category": "IC",
    "subcategory": "IC",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603349798729113600",
    "parts": {
      "symbol": "cm2056-b5s.kicad_sym",
      "footprint": "cm2056-b5s.kicad_mod",
      "model_3d": "cm2056-b5s-hero.glb",
      "model_3d_plain": "cm2056-b5s-etched.glb",
      "model_3d_step": "cm2056-b5s-etched.step",
      "model_3d_step_plain": "cm2056-b5s.step",
      "lbr": "cm2056-b5s.lbr"
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    "distributor_links": {
      "lcsc": "C22446502"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:48:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VROUT",
        "type": "power_out",
        "description": "Internal LDO output that powers the AFE and provides the external ADC reference voltage; maximum output current is 3 mA."
      },
      {
        "number": "2",
        "name": "ALT",
        "type": "output",
        "description": "Alarm interrupt output to the MCU that is high by default and goes low on an alarm until register 08H is cleared."
      },
      {
        "number": "3",
        "name": "VCELL",
        "type": "output",
        "description": "Analog output of the selected cell voltage, scaled by 0.6 so that cell voltage = VCELL/0.6, with measurement accuracy of ±15 mV."
      },
      {
        "number": "4",
        "name": "VIOUT",
        "type": "output",
        "description": "Analog output of the battery current sample, 2.5 V at zero load; above 2.5 V indicates charging and below 2.5 V indicates discharging."
      },
      {
        "number": "5",
        "name": "CO",
        "type": "output",
        "description": "Charge MOSFET drive output controlled via CTLC, with high level 8-12 V when VCC > 12 V."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C data line to the MCU, supporting clock rates up to 400 kHz."
      },
      {
        "number": "7",
        "name": "SCL",
        "type": "input",
        "description": "I2C clock line from the MCU, supporting clock rates up to 400 kHz."
      },
      {
        "number": "8",
        "name": "CTLC",
        "type": "input",
        "description": "MCU control input that switches the CO output path on or off."
      },
      {
        "number": "9",
        "name": "CTLD",
        "type": "input",
        "description": "MCU control input that switches the DO output path on or off."
      },
      {
        "number": "10",
        "name": "RST",
        "type": "input",
        "description": "Reset input; a high level longer than 100 µs resets the AFE."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected (floating) inside the package."
      },
      {
        "number": "12",
        "name": "DO",
        "type": "output",
        "description": "Discharge MOSFET drive output controlled via CTLD, with low output level of 0.5 V maximum."
      },
      {
        "number": "13",
        "name": "SRP",
        "type": "input",
        "description": "Positive current-sense input, connected across the main-circuit sense resistor Rsense."
      },
      {
        "number": "14",
        "name": "SRN",
        "type": "input",
        "description": "Negative current-sense input, connected across the main-circuit sense resistor Rsense."
      },
      {
        "number": "15",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "16",
        "name": "VC1",
        "type": "power_in",
        "description": "Positive input of cell 1 and negative input of cell 2 for cell voltage sensing."
      },
      {
        "number": "17",
        "name": "VC2",
        "type": "power_in",
        "description": "Positive input of cell 2 and negative input of cell 3 for cell voltage sensing."
      },
      {
        "number": "18",
        "name": "VC3",
        "type": "power_in",
        "description": "Positive input of cell 3 and negative input of cell 4 for cell voltage sensing."
      },
      {
        "number": "19",
        "name": "VC4",
        "type": "power_in",
        "description": "Positive input of cell 4 and negative input of cell 5 for cell voltage sensing."
      },
      {
        "number": "20",
        "name": "VC5",
        "type": "power_in",
        "description": "Positive input of cell 5 for cell voltage sensing; absolute maximum VC pin-to-ground voltage is VSS+40 V."
      },
      {
        "number": "21",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected (floating) inside the package."
      },
      {
        "number": "22",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected (floating) inside the package."
      },
      {
        "number": "23",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected (floating) inside the package."
      },
      {
        "number": "24",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply input; normal operating voltage is 6-40 V."
      }
    ],
    "provenance": {
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        "extractor": "extract_pins 0.3",
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        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pinout figure and Table 1 are under the CM2056-B3S header (3.3 V LDO variant). The product list ; The pin figure text is garbled. Pin numbers and names were taken from Table 1 (pin list), which is c; The datasheet does not give KiCad ERC types. Types for ALT, VROUT, VCELL, VIOUT, CO, DO, SCL, CTLC, ",
          "4/24 pins cited to the wrong page (name found elsewhere): ['7:SCL@p9', '13:SRP@p8', '14:SRN@p8', '24:VCC@p6']"
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        "cost_usd": 0.0743,
        "at": "2026-10-19T05:48:29"
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      "datasheet": {
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        "pages": 21,
        "sha256": "2f74953c09882f29",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  "metadata": {
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          "name": "0负载 VIOUT 电压",
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          "name": "电池电压采样输入电流",
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          "name": "电压采样输出延迟时间",
          "symbol": "Tvcset",
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          "name": "线性调整率",
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          "kind": "electrical",
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          "name": "VROUT 温度系数",
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          "name": "DO 低输出电平",
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