AC6951C8

{
  "schema_version": 1,
  "type": "component",
  "slug": "ac6951c8",
  "title": "AC6951C8",
  "brief": "JieLi Tech Microcontroller Units (MCUs/MPUs/SOCs), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "single chip microcomputer-microcontroller",
    "ac6951c8",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "AC6951C8",
    "manufacturer": "JieLi Tech",
    "package": "LQFP-48(7x7)",
    "pin_count": 48,
    "category": "Single Chip Microcomputer/Microcontroller",
    "subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/cb7de9fcb1cb87daaf85bffd1d557d64.pdf",
    "parts": {
      "symbol": "ac6951c8.kicad_sym",
      "footprint": "ac6951c8.kicad_mod",
      "model_3d": "ac6951c8-hero.glb",
      "model_3d_plain": "ac6951c8-etched.glb",
      "model_3d_step": "ac6951c8-etched.step",
      "model_3d_step_plain": "ac6951c8.step",
      "lbr": "ac6951c8.lbr"
    },
    "distributor_links": {
      "lcsc": "C5440133"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T00:34:01Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PB4",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive and multiple alternate functions including ADC7, LVD input and PWM channel output."
      },
      {
        "number": "2",
        "name": "VBAT",
        "type": "power_in",
        "description": "Main supply input, 2.2V to 5.5V."
      },
      {
        "number": "3",
        "name": "VDDIO",
        "type": "power_in",
        "description": "IO power supply, 2.2V to 3.6V."
      },
      {
        "number": "4",
        "name": "RTCVDD33",
        "type": "power_in",
        "description": "RTC power supply, 2.2V to 3.6V."
      },
      {
        "number": "5",
        "name": "PR1",
        "type": "bidirectional",
        "description": "RTC-domain IO shared with the 32kHz oscillator output OSCO_32K, supplied by RTCVDD."
      },
      {
        "number": "6",
        "name": "PR0",
        "type": "bidirectional",
        "description": "RTC-domain IO shared with the 32kHz oscillator input OSCI_32K, supplied by RTCVDD."
      },
      {
        "number": "7",
        "name": "PB3",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also Timer2 PWM output and ADC6 input."
      },
      {
        "number": "8",
        "name": "PB2",
        "type": "bidirectional",
        "description": "GPIO with 8 mA drive and high-voltage resistance, can be pulled up to 5V."
      },
      {
        "number": "9",
        "name": "PB1",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, default pull-up, also long-press reset function."
      },
      {
        "number": "10",
        "name": "PB0",
        "type": "bidirectional",
        "description": "GPIO with 8 mA drive and high-voltage resistance, can be pulled up to 5V."
      },
      {
        "number": "11",
        "name": "BT_AVDD",
        "type": "power_in",
        "description": "Bluetooth analog power supply, output of the 1.3V BT_AVDD regulator as stated in PMU characteristics."
      },
      {
        "number": "12",
        "name": "BT_RF",
        "type": "passive",
        "description": "Bluetooth RF antenna connection."
      },
      {
        "number": "13",
        "name": "VSSIO",
        "type": "power_in",
        "description": "Ground for the IO domain."
      },
      {
        "number": "14",
        "name": "BT_OSCI",
        "type": "input",
        "description": "Bluetooth oscillator input."
      },
      {
        "number": "15",
        "name": "BT_OSCO",
        "type": "output",
        "description": "Bluetooth oscillator output."
      },
      {
        "number": "16",
        "name": "PC5",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also LCD COM0 output, touch input 15 and motor PWM channel 5 low output."
      },
      {
        "number": "17",
        "name": "PC4",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also LCD COM1 output, touch input 14 and motor PWM channel 5 high output."
      },
      {
        "number": "18",
        "name": "PC3",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also LCD COM2 output and touch input 13."
      },
      {
        "number": "19",
        "name": "PC2",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also LCD COM3 output, LCD SEG18 output and motor auto-stop protection pin 5."
      },
      {
        "number": "20",
        "name": "PC1",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also LCD COM4 output, LCD SEG17 output and motor auto-stop protection pin 4."
      },
      {
        "number": "21",
        "name": "PC0",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also LCD COM5 output, LCD SEG16 output and motor auto-stop protection pin 3."
      },
      {
        "number": "22",
        "name": "PA12",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also Timer1 PWM output, ADC4 input and LCD SEG12 output."
      },
      {
        "number": "23",
        "name": "USBDM",
        "type": "bidirectional",
        "description": "USB 2.0 negative data line, with internal pull-down resistor."
      },
      {
        "number": "24",
        "name": "USBDP",
        "type": "bidirectional",
        "description": "USB 2.0 positive data line, with internal pull-down resistor."
      },
      {
        "number": "25",
        "name": "PA10",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also SD0 clock, ADC3 input and motor PWM channel 4 low output."
      },
      {
        "number": "26",
        "name": "PA9",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also SD0 command, S/PDIF input A and motor PWM channel 4 high output."
      },
      {
        "number": "27",
        "name": "PA8",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also SD0 data 3, LCD SEG8 output and motor auto-stop protection pin 2."
      },
      {
        "number": "28",
        "name": "PA7",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also SD0 data 2, LCD SEG7 output and Timer0 clock input."
      },
      {
        "number": "29",
        "name": "PA6",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also SD0 data 1, ADC2 input and LCD SEG6 output."
      },
      {
        "number": "30",
        "name": "PA5/PA4",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also SD0 data 0 (PA5), ADC1 input, LCD SEG5 output and Timer0 PWM output."
      },
      {
        "number": "31",
        "name": "PA3",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also PLNK data 1, audio link word select A and LCD SEG3 output."
      },
      {
        "number": "32",
        "name": "PA2/PA1",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also PLNK serial clock (PA2) and analog channel 0 right (PA1)."
      },
      {
        "number": "33",
        "name": "PA0/PC7",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive (PA0), also analog channel 0 left, LCD SEG0 output and motor PWM channel 0 high output; PC7 provides the microphone bias output."
      },
      {
        "number": "34",
        "name": "MIC",
        "type": "input",
        "description": "Microphone input channel."
      },
      {
        "number": "35",
        "name": "HPVDD",
        "type": "power_in",
        "description": "Headphone amplifier power supply."
      },
      {
        "number": "36",
        "name": "DACVSS",
        "type": "power_in",
        "description": "DAC ground."
      },
      {
        "number": "37",
        "name": "VCOM",
        "type": "passive",
        "description": "DAC reference node."
      },
      {
        "number": "38",
        "name": "DACVDD",
        "type": "power_in",
        "description": "DAC power supply, typically 2.7V at VBAT=5V with 10mA loading."
      },
      {
        "number": "39",
        "name": "DACL",
        "type": "output",
        "description": "DAC left channel output."
      },
      {
        "number": "40",
        "name": "DACR",
        "type": "output",
        "description": "DAC right channel output."
      },
      {
        "number": "41",
        "name": "FMIP",
        "type": "input",
        "description": "FM single-ended input."
      },
      {
        "number": "42",
        "name": "PB11",
        "type": "bidirectional",
        "description": "GPIO that also carries SDC power gate (SDPG) function."
      },
      {
        "number": "43",
        "name": "PB10",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also analog channel 2 right, SD0 command B, SPI2 data out A and ADC9 input."
      },
      {
        "number": "44",
        "name": "PB9",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also analog channel 2 left, SPI2 clock A and Timer0 capture input."
      },
      {
        "number": "45",
        "name": "PB8",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also analog channel 1 right, SPI2 data in A, ADC8 input and clock output 1."
      },
      {
        "number": "46",
        "name": "PB7",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also analog channel 1 left."
      },
      {
        "number": "47",
        "name": "PB6",
        "type": "bidirectional",
        "description": "GPIO with 24/8 mA drive, also SD1 clock B, SD0 data 1 B, IIC SDA C and Timer3 clock input."
      },
      {
        "number": "48",
        "name": "PB5",
        "type": "bidirectional",
        "description": "GPIO with 8 mA drive and high-voltage resistance, can be pulled up to 5V, also Timer3 PWM output and Timer1 capture."
      }
    ],
    "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: Pin 4 is printed as RTVDDD33 in Table 1-1 but as RTCVDD33 in Figure 1-1 and the electrical tables; R; Pin 30 is shared by PA5 and PA4 (Figure 1-1 shows PA5/PA4); the table lists both functions under pin; Pin 32 is shared by PA2 and PA1 (Figure 1-1 shows PA2/PA1); the table lists both functions under pin"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0404,
        "at": "2026-10-28T00:33:34"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/cb7de9fcb1cb87daaf85bffd1d557d64.pdf",
        "pages": 16,
        "sha256": "1232620bcb10576c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ac6951c8.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "9dea352d93177c2904afd7d7b68ea8855ce1ab691f69f8b3e13655600514b6bf",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ac6951c8-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          9,
          1.5
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "10d02b3bb025c135e13bc01a3305d78ac044e0929ae711c010f48999ab79f0af",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "JieLi Tech",
      "Package": "LQFP-48(7x7)",
      "Category": "Single Chip Microcomputer/Microcontroller",
      "Pins": "48"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "1232620bcb10576c8cb37a23a9f11aeeb4f486999de29aae043e712440933cd2",
      "rows": [
        {
          "name": "Ambient Temperature",
          "symbol": "Tamb",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Supply Voltage",
          "symbol": "VBAT",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Charger Voltage",
          "symbol": "LDO_IN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "3.3V IO Input Voltage",
          "symbol": "V3.3IO",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "max printed as VDDIO+0.3",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -20,
          "typ": null,
          "max": 70,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VBAT supply range",
          "symbol": "VBAT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VDDIO supply range",
          "symbol": "VDDIO",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "RTCVDD33 supply range",
          "symbol": "RTCVDD33",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VBAT Voltage Input",
          "symbol": "VBAT",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": 3.7,
          "max": 5.5,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "LDO_IN Charger Voltage",
          "symbol": "LDO_IN",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": 5,
          "max": 5.5,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Loading current",
          "symbol": "IL3.3",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "VBAT = 5V",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Input Voltage",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "VDDIO = 3.3V; max printed as 0.3* VDDIO",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Low-Level Output Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.33,
          "conditions": "VDDIO = 3.3V",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "High-Level Output Voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": null,
          "conditions": "VDDIO = 3.3V",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Frequency Response",
          "symbol": "",
          "kind": "electrical",
          "unit": "Hz",
          "min": 20,
          "typ": null,
          "max": 20,
          "conditions": "1KHz/0dB 10Kohm loading With A-Weighted Filter; max printed as 20K Hz",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "DAC Output Power",
          "symbol": "",
          "kind": "electrical",
          "unit": "mW",
          "min": 11,
          "typ": null,
          "max": null,
          "conditions": "32ohm loading",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "ADC Dynamic Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 80,
          "typ": null,
          "max": null,
          "conditions": "1KHz/-60dB",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "ADC S/N",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 90,
          "max": 91,
          "conditions": "",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "RF Transmit Power",
          "symbol": "",
          "kind": "electrical",
          "unit": "dBm",
          "min": 4,
          "typ": 6,
          "max": null,
          "conditions": "25℃, Power Supply VBAT=5V 2441MHz",
          "source_page": 13,
          "source": "datasheet"
        },
        {
          "name": "Input Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": 76,
          "typ": null,
          "max": 108,
          "conditions": "",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Usable Sensitivity",
          "symbol": "",
          "kind": "electrical",
          "unit": "dBμV",
          "min": 3,
          "typ": 4,
          "max": 8,
          "conditions": "EMF (S+N)/N=26dB",
          "source_page": 14,
          "source": "datasheet"
        },
        {
          "name": "Internal pull-up/pull-down resistance accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "internal pull-up/pull-down resistance accuracy ±20%",
          "source_page": 12,
          "source": "datasheet"
        },
        {
          "name": "Internal pull-up/pull-down resistor",
          "symbol": "",
          "kind": "electrical",
          "unit": "K",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "PA0~PA12, PB1, PB3, PB4, PB6~PB10, PC0~PC5 port pull-up and pull-down",
          "source_page": 12,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "AC6951C8 (JieLi Tech) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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