ESP32-S3-MINI-1U-N4R2

{
  "slug": "esp32-s3-mini-1u-n4r2",
  "version": "0.1.0",
  "type": "component",
  "description": "Espressif Systems WiFi Modules, ESP32-S3-MINI-1U. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "iot-communication modules",
    "esp32-s3-mini-1u-n4r2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "esp32-s3-mini-1u-n4r2.kicad_sym",
    "esp32-s3-mini-1u-n4r2.kicad_mod",
    "esp32-s3-mini-1u-n4r2.glb",
    "esp32-s3-mini-1u-n4r2.step",
    "esp32-s3-mini-1u-n4r2.lbr",
    "docs/hero.png",
    "docs/esp32-s3-mini-1u-n4r2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "esp32-s3-mini-1u-n4r2-hero.glb",
    "esp32-s3-mini-1u-n4r2-hero.overlay.json",
    "esp32-s3-mini-1u-n4r2-etched.glb"
  ],
  "component": {
    "mpn": "ESP32-S3-MINI-1U-N4R2",
    "manufacturer": "Espressif Systems",
    "package": "ESP32-S3-MINI-1U",
    "pin_count": 65,
    "category": "IoT/Communication Modules",
    "subcategory": "WiFi Modules",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/0a7481740d683cf70ad4cfb4d2a4b2d7.pdf",
    "parts": {
      "symbol": "esp32-s3-mini-1u-n4r2.kicad_sym",
      "footprint": "esp32-s3-mini-1u-n4r2.kicad_mod",
      "model_3d": "esp32-s3-mini-1u-n4r2-hero.glb",
      "model_3d_plain": "esp32-s3-mini-1u-n4r2-etched.glb",
      "model_3d_step": "esp32-s3-mini-1u-n4r2-etched.step",
      "model_3d_step_plain": "esp32-s3-mini-1u-n4r2.step",
      "lbr": "esp32-s3-mini-1u-n4r2.lbr"
    },
    "distributor_links": {
      "lcsc": "C22356044"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T17:53:21Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "3",
        "name": "3V3",
        "type": "power_in",
        "description": "Module supply pin; VDD33 must be kept within 3.0-3.6 V (typical 3.3 V, absolute maximum -0.3 to 3.6 V), and the external supply must provide at least 0.5 A."
      },
      {
        "number": "4",
        "name": "IO0",
        "type": "bidirectional",
        "description": "RTC_GPIO0 / GPIO0; strapping pin sampled at reset with a weak internal pull-up (default 1) that selects boot mode together with GPIO46 (both low selects Joint Download Boot)."
      },
      {
        "number": "5",
        "name": "IO1",
        "type": "bidirectional",
        "description": "RTC_GPIO1 / GPIO1 with TOUCH1 and ADC1_CH0 functions."
      },
      {
        "number": "6",
        "name": "IO2",
        "type": "bidirectional",
        "description": "RTC_GPIO2 / GPIO2 with TOUCH2 and ADC1_CH1 functions."
      },
      {
        "number": "7",
        "name": "IO3",
        "type": "bidirectional",
        "description": "RTC_GPIO3 / GPIO3 with TOUCH3 and ADC1_CH2 functions; strapping pin for JTAG signal source selection during early boot, has no internal pull resistor and must be driven by an external circuit that is not high-impedance."
      },
      {
        "number": "8",
        "name": "IO4",
        "type": "bidirectional",
        "description": "RTC_GPIO4 / GPIO4 with TOUCH4 and ADC1_CH3 functions."
      },
      {
        "number": "9",
        "name": "IO5",
        "type": "bidirectional",
        "description": "RTC_GPIO5 / GPIO5 with TOUCH5 and ADC1_CH4 functions."
      },
      {
        "number": "10",
        "name": "IO6",
        "type": "bidirectional",
        "description": "RTC_GPIO6 / GPIO6 with TOUCH6 and ADC1_CH5 functions."
      },
      {
        "number": "11",
        "name": "IO7",
        "type": "bidirectional",
        "description": "RTC_GPIO7 / GPIO7 with TOUCH7 and ADC1_CH6 functions."
      },
      {
        "number": "12",
        "name": "IO8",
        "type": "bidirectional",
        "description": "RTC_GPIO8 / GPIO8 with TOUCH8, ADC1_CH7 and SUBSPICS1 functions."
      },
      {
        "number": "13",
        "name": "IO9",
        "type": "bidirectional",
        "description": "RTC_GPIO9 / GPIO9 with TOUCH9, ADC1_CH8, FSPIHD and SUBSPIHD functions."
      },
      {
        "number": "14",
        "name": "IO10",
        "type": "bidirectional",
        "description": "RTC_GPIO10 / GPIO10 with TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 and SUBSPICS0 functions."
      },
      {
        "number": "15",
        "name": "IO11",
        "type": "bidirectional",
        "description": "RTC_GPIO11 / GPIO11 with TOUCH11, ADC2_CH0, FSPID, FSPIIO5 and SUBSPID functions."
      },
      {
        "number": "16",
        "name": "IO12",
        "type": "bidirectional",
        "description": "RTC_GPIO12 / GPIO12 with TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 and SUBSPICLK functions."
      },
      {
        "number": "17",
        "name": "IO13",
        "type": "bidirectional",
        "description": "RTC_GPIO13 / GPIO13 with TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 and SUBSPIQ functions."
      },
      {
        "number": "18",
        "name": "IO14",
        "type": "bidirectional",
        "description": "RTC_GPIO14 / GPIO14 with TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS and SUBSPIWP functions."
      },
      {
        "number": "19",
        "name": "IO15",
        "type": "bidirectional",
        "description": "RTC_GPIO15 / GPIO15 with U0RTS, ADC2_CH4 and XTAL_32K_P functions."
      },
      {
        "number": "20",
        "name": "IO16",
        "type": "bidirectional",
        "description": "RTC_GPIO16 / GPIO16 with U0CTS, ADC2_CH5 and XTAL_32K_N functions."
      },
      {
        "number": "21",
        "name": "IO17",
        "type": "bidirectional",
        "description": "RTC_GPIO17 / GPIO17 with U1TXD and ADC2_CH6 functions."
      },
      {
        "number": "22",
        "name": "IO18",
        "type": "bidirectional",
        "description": "RTC_GPIO18 / GPIO18 with U1RXD, ADC2_CH7 and CLK_OUT3 functions."
      },
      {
        "number": "23",
        "name": "IO19",
        "type": "bidirectional",
        "description": "RTC_GPIO19 / GPIO19 with U1RTS, ADC2_CH8, CLK_OUT2 and USB_D- functions."
      },
      {
        "number": "24",
        "name": "IO20",
        "type": "bidirectional",
        "description": "RTC_GPIO20 / GPIO20 with U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+ functions."
      },
      {
        "number": "25",
        "name": "IO21",
        "type": "bidirectional",
        "description": "RTC_GPIO21 / GPIO21 general-purpose I/O with RTC function."
      },
      {
        "number": "26",
        "name": "IO26",
        "type": "bidirectional",
        "description": "SPICS1 / GPIO26; on modules ordered with the -N4R2 suffix this pin is used to connect the embedded PSRAM and cannot be used for other functions."
      },
      {
        "number": "27",
        "name": "IO47",
        "type": "bidirectional",
        "description": "SPICLK_P_DIFF / GPIO47 with SUBSPICLK_P_DIFF function."
      },
      {
        "number": "28",
        "name": "IO33",
        "type": "bidirectional",
        "description": "SPIIO4 / GPIO33 with FSPIHD and SUBSPIHD functions; default function is determined by an eFuse bit."
      },
      {
        "number": "29",
        "name": "IO34",
        "type": "bidirectional",
        "description": "SPIIO5 / GPIO34 with FSPICS0 and SUBSPICS0 functions; default function is determined by an eFuse bit."
      },
      {
        "number": "30",
        "name": "IO48",
        "type": "bidirectional",
        "description": "SPICLK_N_DIFF / GPIO48 with SUBSPICLK_N_DIFF function."
      },
      {
        "number": "31",
        "name": "IO35",
        "type": "bidirectional",
        "description": "SPIIO6 / GPIO35 with FSPID and SUBSPID functions; default function is determined by an eFuse bit."
      },
      {
        "number": "32",
        "name": "IO36",
        "type": "bidirectional",
        "description": "SPIIO7 / GPIO36 with FSPICLK and SUBSPICLK functions; default function is determined by an eFuse bit."
      },
      {
        "number": "33",
        "name": "IO37",
        "type": "bidirectional",
        "description": "SPIDQS / GPIO37 with FSPIQ and SUBSPIQ functions; default function is determined by an eFuse bit."
      },
      {
        "number": "34",
        "name": "IO38",
        "type": "bidirectional",
        "description": "GPIO38 with FSPIWP and SUBSPIWP functions."
      },
      {
        "number": "35",
        "name": "IO39",
        "type": "bidirectional",
        "description": "MTCK / GPIO39 with CLK_OUT3 and SUBSPICS1 functions (JTAG clock)."
      },
      {
        "number": "36",
        "name": "IO40",
        "type": "bidirectional",
        "description": "MTDO / GPIO40 with CLK_OUT2 function (JTAG data out)."
      },
      {
        "number": "37",
        "name": "IO41",
        "type": "bidirectional",
        "description": "MTDI / GPIO41 with CLK_OUT1 function (JTAG data in)."
      },
      {
        "number": "38",
        "name": "IO42",
        "type": "bidirectional",
        "description": "MTMS / GPIO42 (JTAG mode select)."
      },
      {
        "number": "39",
        "name": "TXD0",
        "type": "bidirectional",
        "description": "U0TXD / GPIO43 with CLK_OUT1 function; UART0 transmit, default function of this pad."
      },
      {
        "number": "40",
        "name": "RXD0",
        "type": "bidirectional",
        "description": "U0RXD / GPIO44 with CLK_OUT2 function; UART0 receive, default function of this pad."
      },
      {
        "number": "41",
        "name": "IO45",
        "type": "bidirectional",
        "description": "GPIO45; strapping pin sampled at reset with weak internal pull-down (default 0) that sets the VDD_SPI voltage."
      },
      {
        "number": "44",
        "name": "IO46",
        "type": "bidirectional",
        "description": "GPIO46; strapping pin sampled at reset with weak internal pull-down (default 0) that selects boot mode and ROM log output."
      },
      {
        "number": "45",
        "name": "EN",
        "type": "input",
        "description": "Chip enable: high enables the chip and low shuts it down; EN must not be left floating, and an RC delay circuit is recommended (typically 10 kΩ / 1 µF, to be tuned to power-up timing)."
      },
      {
        "number": "42",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "43",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "46",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "47",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "48",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "49",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "50",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "51",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "52",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "53",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "54",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "55",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "56",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "57",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "58",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "59",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "60",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "61",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module; this is the exposed thermal pad (EPAD) which may be soldered to the base board GND for better heat dissipation."
      },
      {
        "number": "62",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "63",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "64",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      },
      {
        "number": "65",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection of the module (one of the GND pins listed in Table 2)."
      }
    ],
    "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 26 (IO26) is reserved for the embedded PSRAM on -N4R2 variants (footnote b), so it is not usable; The default functions of these pins (IO33–IO37) are determined by eFuse bits, as stated in the table; Pin 61 is labelled EPAD in the schematic and footnote text but is listed as GND within the GND 46–65"
        ],
        "pages_sent": 37,
        "cost_usd": 0.128,
        "at": "2026-10-28T17:52:16"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/0a7481740d683cf70ad4cfb4d2a4b2d7.pdf",
        "pages": 37,
        "sha256": "71142b72ce76c5d0",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 65,
        "described": 65,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "esp32-s3-mini-1u-n4r2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15.4,
          15.4,
          2.465
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f83f866d1f4627dce9c566467586d0de3d1bb69c0fa4315fa43348a80a810768",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "esp32-s3-mini-1u-n4r2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          15.4,
          15.4,
          2.465
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2d4b38f5b32390b661d3018fb896b8621f3774486b274924c6acaa8d210c4979",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}