ESP32-S3-WROOM-1U-N4

{
  "schema_version": 1,
  "type": "component",
  "slug": "esp32-s3-wroom-1u-n4",
  "title": "ESP32-S3-WROOM-1U-N4",
  "brief": "Espressif Systems WiFi Modules, ESP32-S3-WROOM-1U. 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",
    "iot-communication modules",
    "esp32-s3-wroom-1u-n4",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "ESP32-S3-WROOM-1U-N4",
    "manufacturer": "Espressif Systems",
    "package": "ESP32-S3-WROOM-1U",
    "pin_count": 41,
    "category": "IoT/Communication Modules",
    "subcategory": "WiFi Modules",
    "datasheet": "https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf",
    "parts": {
      "symbol": "esp32-s3-wroom-1u-n4.kicad_sym",
      "footprint": "esp32-s3-wroom-1u-n4.kicad_mod",
      "model_3d": "esp32-s3-wroom-1u-n4-hero.glb",
      "model_3d_plain": "esp32-s3-wroom-1u-n4-etched.glb",
      "model_3d_step": "esp32-s3-wroom-1u-n4-etched.step",
      "model_3d_step_plain": "esp32-s3-wroom-1u-n4.step",
      "lbr": "esp32-s3-wroom-1u-n4.lbr"
    },
    "distributor_links": {
      "lcsc": "C2980296",
      "digikey": "1965-ESP32-S3-WROOM-1U-N4TR-ND",
      "mouser": "356-ESP32S3WROOM1UN4"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T17:35:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1965-ESP32-S3-WROOM-1U-N4TR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "356-ESP32S3WROOM1UN4",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection for the module."
      },
      {
        "number": "2",
        "name": "3V3",
        "type": "power_in",
        "description": "Module supply input; the datasheet specifies VDD33 of 3.0 V to 3.6 V (3.3 V typical) with at least 0.5 A from the external supply."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "High enables the chip and low powers it off; the pin must not be left floating."
      },
      {
        "number": "4",
        "name": "IO4",
        "type": "bidirectional",
        "description": "GPIO4 with alternate functions RTC_GPIO4, TOUCH4 and ADC1_CH3."
      },
      {
        "number": "5",
        "name": "IO5",
        "type": "bidirectional",
        "description": "GPIO5 with alternate functions RTC_GPIO5, TOUCH5 and ADC1_CH4."
      },
      {
        "number": "6",
        "name": "IO6",
        "type": "bidirectional",
        "description": "GPIO6 with alternate functions RTC_GPIO6, TOUCH6 and ADC1_CH5."
      },
      {
        "number": "7",
        "name": "IO7",
        "type": "bidirectional",
        "description": "GPIO7 with alternate functions RTC_GPIO7, TOUCH7 and ADC1_CH6."
      },
      {
        "number": "8",
        "name": "IO15",
        "type": "bidirectional",
        "description": "GPIO15 with alternate functions RTC_GPIO15, U0RTS, ADC2_CH4 and XTAL_32K_P."
      },
      {
        "number": "9",
        "name": "IO16",
        "type": "bidirectional",
        "description": "GPIO16 with alternate functions RTC_GPIO16, U0CTS, ADC2_CH5 and XTAL_32K_N."
      },
      {
        "number": "10",
        "name": "IO17",
        "type": "bidirectional",
        "description": "GPIO17 with alternate functions RTC_GPIO17, U1TXD and ADC2_CH6."
      },
      {
        "number": "11",
        "name": "IO18",
        "type": "bidirectional",
        "description": "GPIO18 with alternate functions RTC_GPIO18, U1RXD, ADC2_CH7 and CLK_OUT3."
      },
      {
        "number": "12",
        "name": "IO8",
        "type": "bidirectional",
        "description": "GPIO8 with alternate functions RTC_GPIO8, TOUCH8, ADC1_CH7 and SUBSPICS1."
      },
      {
        "number": "13",
        "name": "IO19",
        "type": "bidirectional",
        "description": "GPIO19 with alternate functions RTC_GPIO19, U1RTS, ADC2_CH8, CLK_OUT2 and USB_D-."
      },
      {
        "number": "14",
        "name": "IO20",
        "type": "bidirectional",
        "description": "GPIO20 with alternate functions RTC_GPIO20, U1CTS, ADC2_CH9, CLK_OUT1 and USB_D+."
      },
      {
        "number": "15",
        "name": "IO3",
        "type": "bidirectional",
        "description": "GPIO3 with alternate functions RTC_GPIO3, TOUCH3 and ADC1_CH2; its strapping default is floating."
      },
      {
        "number": "16",
        "name": "IO46",
        "type": "bidirectional",
        "description": "GPIO46 (strapping pin for chip boot mode and ROM message printing, weak pull-down by default)."
      },
      {
        "number": "17",
        "name": "IO9",
        "type": "bidirectional",
        "description": "GPIO9 with alternate functions RTC_GPIO9, TOUCH9, ADC1_CH8, FSPIHD and SUBSPIHD."
      },
      {
        "number": "18",
        "name": "IO10",
        "type": "bidirectional",
        "description": "GPIO10 with alternate functions RTC_GPIO10, TOUCH10, ADC1_CH9, FSPICS0, FSPIIO4 and SUBSPICS0."
      },
      {
        "number": "19",
        "name": "IO11",
        "type": "bidirectional",
        "description": "GPIO11 with alternate functions RTC_GPIO11, TOUCH11, ADC2_CH0, FSPID, FSPIIO5 and SUBSPID."
      },
      {
        "number": "20",
        "name": "IO12",
        "type": "bidirectional",
        "description": "GPIO12 with alternate functions RTC_GPIO12, TOUCH12, ADC2_CH1, FSPICLK, FSPIIO6 and SUBSPICLK."
      },
      {
        "number": "21",
        "name": "IO13",
        "type": "bidirectional",
        "description": "GPIO13 with alternate functions RTC_GPIO13, TOUCH13, ADC2_CH2, FSPIQ, FSPIIO7 and SUBSPIQ."
      },
      {
        "number": "22",
        "name": "IO14",
        "type": "bidirectional",
        "description": "GPIO14 with alternate functions RTC_GPIO14, TOUCH14, ADC2_CH3, FSPIWP, FSPIDQS and SUBSPIWP."
      },
      {
        "number": "23",
        "name": "IO21",
        "type": "bidirectional",
        "description": "GPIO21 with alternate function RTC_GPIO21."
      },
      {
        "number": "24",
        "name": "IO47",
        "type": "bidirectional",
        "description": "GPIO47 with alternate functions SPICLK_P_DIFF and SUBSPICLK_P_DIFF; operates at 1.8 V only on R16V modules."
      },
      {
        "number": "25",
        "name": "IO48",
        "type": "bidirectional",
        "description": "GPIO48 with alternate functions SPICLK_N_DIFF and SUBSPICLK_N_DIFF; operates at 1.8 V only on R16V modules."
      },
      {
        "number": "26",
        "name": "IO45",
        "type": "bidirectional",
        "description": "GPIO45 (strapping pin for VDD_SPI voltage, weak pull-down by default)."
      },
      {
        "number": "27",
        "name": "IO0",
        "type": "bidirectional",
        "description": "GPIO0 with alternate function RTC_GPIO0; strapping pin for chip boot mode, weak pull-up by default."
      },
      {
        "number": "28",
        "name": "IO35",
        "type": "bidirectional",
        "description": "GPIO35 with alternate functions SPIIO6, FSPID and SUBSPID; default function is set by eFuse bit."
      },
      {
        "number": "29",
        "name": "IO36",
        "type": "bidirectional",
        "description": "GPIO36 with alternate functions SPIIO7, FSPICLK and SUBSPICLK; default function is set by eFuse bit."
      },
      {
        "number": "30",
        "name": "IO37",
        "type": "bidirectional",
        "description": "GPIO37 with alternate functions SPIDQS, FSPIQ and SUBSPIQ; default function is set by eFuse bit."
      },
      {
        "number": "31",
        "name": "IO38",
        "type": "bidirectional",
        "description": "GPIO38 with alternate functions FSPIWP and SUBSPIWP."
      },
      {
        "number": "32",
        "name": "IO39",
        "type": "bidirectional",
        "description": "GPIO39 with JTAG function MTCK and alternate functions CLK_OUT3 and SUBSPICS1."
      },
      {
        "number": "33",
        "name": "IO40",
        "type": "bidirectional",
        "description": "GPIO40 with JTAG function MTDO and alternate function CLK_OUT2."
      },
      {
        "number": "34",
        "name": "IO41",
        "type": "bidirectional",
        "description": "GPIO41 with JTAG function MTDI and alternate function CLK_OUT1."
      },
      {
        "number": "35",
        "name": "IO42",
        "type": "bidirectional",
        "description": "GPIO42 with JTAG function MTMS."
      },
      {
        "number": "36",
        "name": "RXD0",
        "type": "bidirectional",
        "description": "UART0 receive (U0RXD) with alternate functions GPIO44 and CLK_OUT2."
      },
      {
        "number": "37",
        "name": "TXD0",
        "type": "bidirectional",
        "description": "UART0 transmit (U0TXD) with alternate functions GPIO43 and CLK_OUT1."
      },
      {
        "number": "38",
        "name": "IO2",
        "type": "bidirectional",
        "description": "GPIO2 with alternate functions RTC_GPIO2, TOUCH2 and ADC1_CH1."
      },
      {
        "number": "39",
        "name": "IO1",
        "type": "bidirectional",
        "description": "GPIO1 with alternate functions RTC_GPIO1, TOUCH1 and ADC1_CH0."
      },
      {
        "number": "40",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection for the module."
      },
      {
        "number": "41",
        "name": "EPAD",
        "type": "power_in",
        "description": "Exposed thermal pad tied to ground; soldering it to the base-board ground is optional and can improve thermal performance."
      }
    ],
    "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: Package: the MPN ESP32-S3-WROOM-1U-N4 matches the 19.2 x 18 mm hint (WROOM-1U dimensions, page 42). ; Footnote b says IO35-IO37 are used by Octal PSRAM only on R8/R16V modules. Whether they are free on ; Footnote c (1.8 V operation) applies only to R16V modules, not to N4.",
          "1/41 pins cited to the wrong page (name found elsewhere): ['2:3V3@p27']"
        ],
        "pages_sent": 28,
        "cost_usd": 0.1332,
        "at": "2026-10-28T17:34:15"
      },
      "datasheet": {
        "url": "https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf",
        "pages": 53,
        "sha256": "27d71971da07c280",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 41,
        "described": 41,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "esp32-s3-wroom-1u-n4.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          18,
          19.2,
          3.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.62,
        "footprint_binding": "identity",
        "sha256": "4cec0cc6e4110c9f36f16f7fcd299b190d5db6f99c8879b2a20d6221e43d7b7a",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "esp32-s3-wroom-1u-n4-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          18,
          19.2,
          3.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0.62,
        "footprint_binding": "identity",
        "sha256": "a750552b418d590cbd40486ed4cb3b6990eca92648876b4a306b022c37125476",
        "checked": "2026-10-28",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Espressif Systems",
      "Package": "ESP32-S3-WROOM-1U",
      "Category": "IoT/Communication Modules",
      "Pins": "41"
    },
    "appearance": {
      "contacts": {
        "quote": "Solder: Sn-Ag-Cu (SAC305) lead-free solder Temperature (°C)",
        "page": 47,
        "doc": "ds.pdf",
        "plating": "tin"
      },
      "version": 1,
      "datasheet_sha256": "27d71971da07c280c6068d08c74720d1a25b8f20cf8494dc1765bdd28d40d435"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "27d71971da07c280c6068d08c74720d1a25b8f20cf8494dc1765bdd28d40d435",
      "rows": [
        {
          "name": "Power supply voltage (absolute maximum)",
          "symbol": "VDD33",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3.6,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "TSTORE",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 105,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Power supply voltage",
          "symbol": "VDD33",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": 3.3,
          "max": 3.6,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Current delivered by external power supply",
          "symbol": "IVDD",
          "kind": "recommended_operating",
          "unit": "A",
          "min": 0.5,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Operating ambient temperature (85 °C version)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "85 °C version",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "High-level input current",
          "symbol": "IIH",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Low-level input current",
          "symbol": "IIL",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Center frequency range of operating channel (Wi-Fi)",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": 2412,
          "typ": null,
          "max": 2484,
          "conditions": "",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "Center frequency range of operating channel (Bluetooth LE)",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": 2402,
          "typ": null,
          "max": 2480,
          "conditions": "",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "RF transmit power range (Bluetooth LE)",
          "symbol": "",
          "kind": "electrical",
          "unit": "dBm",
          "min": -24,
          "typ": null,
          "max": 20,
          "conditions": "",
          "source_page": 34,
          "source": "datasheet"
        },
        {
          "name": "TX EVM limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": null,
          "max": -10,
          "conditions": "802.11b, 1 Mbps, @20.5 dBm",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "TX EVM limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "802.11g, 6 Mbps, @20 dBm",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "TX EVM limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": null,
          "max": -25,
          "conditions": "802.11g, 54 Mbps, @18 dBm",
          "source_page": 32,
          "source": "datasheet"
        },
        {
          "name": "TX EVM limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": null,
          "max": -5,
          "conditions": "802.11n, HT20, MCS 0, @19 dBm",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "TX EVM limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": null,
          "max": -27,
          "conditions": "802.11n, HT20, MCS 7, @17.5 dBm",
          "source_page": 33,
          "source": "datasheet"
        },
        {
          "name": "Pin capacitance",
          "symbol": "CIN",
          "kind": "electrical",
          "unit": "pF",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "High-level source current",
          "symbol": "IOH",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 40,
          "max": null,
          "conditions": "VDD = 3.3 V, VOH >= 2.64 V, PAD_DRIVER = 3",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Low-level sink current",
          "symbol": "IOL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 28,
          "max": null,
          "conditions": "VDD = 3.3 V, VOL = 0.495 V, PAD_DRIVER = 3",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Internal weak pull-up resistor",
          "symbol": "RPU",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        },
        {
          "name": "Internal weak pull-down resistor",
          "symbol": "RPD",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "",
          "source_page": 27,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_pitch": "ESP32-S3-WROOM-1U-N4 (Espressif Systems) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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