ESP32-S3R16V

{
  "slug": "esp32-s3r16v",
  "version": "0.1.0",
  "type": "component",
  "description": "Espressif Systems RF and Wireless, 56-VFQFN Exposed Pad. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "rf and wireless",
    "esp32-s3r16v",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "esp32-s3r16v.kicad_sym",
    "esp32-s3r16v.kicad_mod",
    "esp32-s3r16v.glb",
    "esp32-s3r16v.step",
    "esp32-s3r16v.lbr",
    "docs/hero.png",
    "docs/esp32-s3r16v-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "esp32-s3r16v-hero.glb",
    "esp32-s3r16v-hero.overlay.json",
    "esp32-s3r16v-etched.glb"
  ],
  "component": {
    "mpn": "ESP32-S3R16V",
    "manufacturer": "Espressif Systems",
    "package": "56-VFQFN Exposed Pad",
    "pin_count": 57,
    "category": "RF and Wireless",
    "subcategory": "RF and Wireless",
    "datasheet": "https://www.espressif.com/sites/default/files/documentation/esp32-s3_datasheet_en.pdf",
    "parts": {
      "symbol": "esp32-s3r16v.kicad_sym",
      "footprint": "esp32-s3r16v.kicad_mod",
      "model_3d": "esp32-s3r16v-hero.glb",
      "model_3d_plain": "esp32-s3r16v-etched.glb",
      "model_3d_step": "esp32-s3r16v-etched.step",
      "model_3d_step_plain": "esp32-s3r16v.step",
      "lbr": "esp32-s3r16v.lbr"
    },
    "distributor_links": {
      "mouser": "356-ESP32-S3R16V"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T23:16:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 968 calls left today"
      },
      "mouser": {
        "pn": "356-ESP32-S3R16V",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "LNA_IN",
        "type": "bidirectional",
        "description": "RF low-noise amplifier input/output signal pin."
      },
      {
        "number": "2",
        "name": "VDD3P3",
        "type": "power_in",
        "description": "Analog power domain supply pin."
      },
      {
        "number": "3",
        "name": "VDD3P3",
        "type": "power_in",
        "description": "Analog power domain supply pin."
      },
      {
        "number": "4",
        "name": "CHIP_PU",
        "type": "input",
        "description": "High enables the chip and low disables it; the datasheet says this pin must not be left floating."
      },
      {
        "number": "5",
        "name": "GPIO0",
        "type": "bidirectional",
        "description": "General-purpose I/O with internal weak pull-up at reset; strapping pin for chip boot mode control."
      },
      {
        "number": "6",
        "name": "GPIO1",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH0 and TOUCH1 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "7",
        "name": "GPIO2",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH1 and TOUCH2 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "8",
        "name": "GPIO3",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH2 and TOUCH3 analog functions; floating at reset and used as a strapping pin for JTAG signal source selection."
      },
      {
        "number": "9",
        "name": "GPIO4",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH3 and TOUCH4 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "10",
        "name": "GPIO5",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH4 and TOUCH5 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "11",
        "name": "GPIO6",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH5 and TOUCH6 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "12",
        "name": "GPIO7",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH6 and TOUCH7 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "13",
        "name": "GPIO8",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH7 and TOUCH8 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "14",
        "name": "GPIO9",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH8 and TOUCH9 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "15",
        "name": "GPIO10",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC1_CH9 and TOUCH10 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "16",
        "name": "GPIO11",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC2_CH0 and TOUCH11 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "17",
        "name": "GPIO12",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC2_CH1 and TOUCH12 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "18",
        "name": "GPIO13",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC2_CH2 and TOUCH13 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "19",
        "name": "GPIO14",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC2_CH3 and TOUCH14 analog functions; shows a low-level glitch of about 60 µs at power-up."
      },
      {
        "number": "20",
        "name": "VDD3P3_RTC",
        "type": "power_in",
        "description": "Power input for the RTC domain and part of the digital domain, which powers the RTC IO pins."
      },
      {
        "number": "21",
        "name": "XTAL_32K_P",
        "type": "bidirectional",
        "description": "Positive terminal of the 32 kHz external clock oscillator; also general-purpose I/O RTC_GPIO15 with ADC2_CH4 and U0RTS."
      },
      {
        "number": "22",
        "name": "XTAL_32K_N",
        "type": "bidirectional",
        "description": "Negative terminal of the 32 kHz external clock oscillator; also general-purpose I/O RTC_GPIO16 with ADC2_CH5 and U0CTS."
      },
      {
        "number": "23",
        "name": "GPIO17",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC2_CH6 and U1TXD; default drive strength is 10 mA."
      },
      {
        "number": "24",
        "name": "GPIO18",
        "type": "bidirectional",
        "description": "General-purpose I/O with ADC2_CH7 and U1RXD; default drive strength is 10 mA."
      },
      {
        "number": "25",
        "name": "GPIO19",
        "type": "bidirectional",
        "description": "General-purpose I/O, also USB_D- for the USB Serial/JTAG and USB OTG functions; default drive strength is 40 mA."
      },
      {
        "number": "26",
        "name": "GPIO20",
        "type": "bidirectional",
        "description": "General-purpose I/O, also USB_D+ for the USB Serial/JTAG and USB OTG functions; default drive strength is 40 mA."
      },
      {
        "number": "27",
        "name": "GPIO21",
        "type": "bidirectional",
        "description": "General-purpose I/O powered by VDD3P3_RTC with RTC_GPIO21 function."
      },
      {
        "number": "28",
        "name": "SPICS1",
        "type": "bidirectional",
        "description": "SPI chip select 1 for in-package PSRAM (GPIO26); powered by VDD_SPI, which is 1.8 V on R16V, and must not be used for other purposes."
      },
      {
        "number": "29",
        "name": "VDD_SPI",
        "type": "power_out",
        "description": "Power pin for in-package memory and SPI IO; set to 1.8 V on the ESP32-S3R16V."
      },
      {
        "number": "30",
        "name": "SPIHD",
        "type": "bidirectional",
        "description": "SPI hold signal for in-package flash/PSRAM (GPIO27) with internal weak pull-up at reset; powered by VDD_SPI."
      },
      {
        "number": "31",
        "name": "SPIWP",
        "type": "bidirectional",
        "description": "SPI write-protect signal for in-package flash/PSRAM (GPIO28) with internal weak pull-up at reset; powered by VDD_SPI."
      },
      {
        "number": "32",
        "name": "SPICS0",
        "type": "bidirectional",
        "description": "SPI chip select 0 for in-package flash (GPIO29) with internal weak pull-up at reset; powered by VDD_SPI."
      },
      {
        "number": "33",
        "name": "SPICLK",
        "type": "bidirectional",
        "description": "SPI clock for in-package flash/PSRAM (GPIO30) with internal weak pull-up at reset; powered by VDD_SPI."
      },
      {
        "number": "34",
        "name": "SPIQ",
        "type": "bidirectional",
        "description": "SPI data line for in-package flash/PSRAM (GPIO31) with internal weak pull-up at reset; powered by VDD_SPI."
      },
      {
        "number": "35",
        "name": "SPID",
        "type": "bidirectional",
        "description": "SPI data line for in-package flash/PSRAM (GPIO32) with internal weak pull-up at reset; powered by VDD_SPI."
      },
      {
        "number": "36",
        "name": "SPICLK_N",
        "type": "bidirectional",
        "description": "Negative differential SPI clock (GPIO48) for in-package memory; at 1.8 V on R16V because VDD_SPI is 1.8 V."
      },
      {
        "number": "37",
        "name": "SPICLK_P",
        "type": "bidirectional",
        "description": "Positive differential SPI clock (GPIO47) for in-package memory; at 1.8 V on R16V because VDD_SPI is 1.8 V."
      },
      {
        "number": "38",
        "name": "GPIO33",
        "type": "bidirectional",
        "description": "General-purpose I/O powered by VDD_SPI or VDD3P3_CPU; used as the high 4-bit data line for 8-line SPI mode when in-package Octal PSRAM is connected."
      },
      {
        "number": "39",
        "name": "GPIO34",
        "type": "bidirectional",
        "description": "General-purpose I/O powered by VDD_SPI or VDD3P3_CPU; used as the DQ5 data line for in-package Octal PSRAM."
      },
      {
        "number": "40",
        "name": "GPIO35",
        "type": "bidirectional",
        "description": "General-purpose I/O powered by VDD_SPI or VDD3P3_CPU; used as the DQ6 data line for in-package Octal PSRAM."
      },
      {
        "number": "41",
        "name": "GPIO36",
        "type": "bidirectional",
        "description": "General-purpose I/O powered by VDD_SPI or VDD3P3_CPU; used as the DQ7 data line for in-package Octal PSRAM."
      },
      {
        "number": "42",
        "name": "GPIO37",
        "type": "bidirectional",
        "description": "General-purpose I/O powered by VDD_SPI or VDD3P3_CPU; used as the DQS/DM strobe for in-package Octal PSRAM."
      },
      {
        "number": "43",
        "name": "GPIO38",
        "type": "bidirectional",
        "description": "General-purpose I/O powered by VDD3P3_CPU with FSPIWP and SUBSPIWP alternate functions."
      },
      {
        "number": "44",
        "name": "MTCK",
        "type": "bidirectional",
        "description": "JTAG test clock (GPIO39) powered by VDD3P3_CPU; its weak pull-up depends on EFUSE_DIS_PAD_JTAG."
      },
      {
        "number": "45",
        "name": "MTDO",
        "type": "bidirectional",
        "description": "JTAG test data output (GPIO40) powered by VDD3P3_CPU."
      },
      {
        "number": "46",
        "name": "VDD3P3_CPU",
        "type": "power_in",
        "description": "Digital power domain supply for the digital IO pins."
      },
      {
        "number": "47",
        "name": "MTDI",
        "type": "bidirectional",
        "description": "JTAG test data input (GPIO41) powered by VDD3P3_CPU."
      },
      {
        "number": "48",
        "name": "MTMS",
        "type": "bidirectional",
        "description": "JTAG test mode select (GPIO42) powered by VDD3P3_CPU."
      },
      {
        "number": "49",
        "name": "U0TXD",
        "type": "bidirectional",
        "description": "UART0 transmit data (GPIO43) with internal weak pull-up at reset; powered by VDD3P3_CPU."
      },
      {
        "number": "50",
        "name": "U0RXD",
        "type": "bidirectional",
        "description": "UART0 receive data (GPIO44) with internal weak pull-up at reset; powered by VDD3P3_CPU."
      },
      {
        "number": "51",
        "name": "GPIO45",
        "type": "bidirectional",
        "description": "General-purpose I/O with internal weak pull-down at reset; strapping pin for VDD_SPI voltage control."
      },
      {
        "number": "52",
        "name": "GPIO46",
        "type": "bidirectional",
        "description": "General-purpose I/O with internal weak pull-down at reset; strapping pin for chip boot mode and ROM message printing control."
      },
      {
        "number": "53",
        "name": "XTAL_N",
        "type": "passive",
        "description": "Negative terminal of the external clock input/output connected to the chip's crystal or oscillator."
      },
      {
        "number": "54",
        "name": "XTAL_P",
        "type": "passive",
        "description": "Positive terminal of the external clock input/output connected to the chip's crystal or oscillator."
      },
      {
        "number": "55",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power domain supply pin."
      },
      {
        "number": "56",
        "name": "VDDA",
        "type": "power_in",
        "description": "Analog power domain supply pin."
      },
      {
        "number": "57",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; the exposed pad of the QFN56 package is the external ground connection."
      }
    ],
    "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: The datasheet names the package QFN56 (7×7 mm) and lists 57 pin rows; pin 57 is GND, which is the ex; Pins 36 and 37 are inconsistent in the datasheet. Table 2-1 and Figure 2-1 name them SPICLK_N and SP; For ESP32-S3R16V, VDD_SPI is 1.8 V and the in-package 16 MB Octal SPI PSRAM uses pins 28-35 and 38-4"
        ],
        "pages_sent": 52,
        "cost_usd": 0.1843,
        "at": "2026-10-27T23:16:42"
      },
      "datasheet": {
        "url": "https://www.espressif.com/sites/default/files/documentation/esp32-s3_datasheet_en.pdf",
        "pages": 87,
        "sha256": "2d5a7cb7fd559d8d",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 57,
        "described": 57,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "esp32-s3r16v.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "a7e1b68d7c240016a0c468e633f7967f445758a90dea110c3eff24882158aaa8",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "esp32-s3r16v-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          7.0,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "8945f414008607006e1a29fbfdb1f6f5df356a4253aa80778b95891d322f71be",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}