{ "metadata": { "id": "seeed-xiao-esp32c3", "name": "Seeed Studio XIAO ESP32C3", "type": "mcu_dev_board", "manufacturer": "Seeed Studio", "part_number": "113991054", "datasheet_url": "https://www.seeedstudio.com/Seeed-XIAO-ESP32C3-p-5431.html", "description": "Thumb-sized ESP32-C3 (RISC-V) dev board in the XIAO form factor with USB-C, 3.3V I/O, Wi-Fi + BLE, and an external U.FL antenna connector.", "tags": [ "xiao", "esp32-c3", "risc-v", "wifi", "ble", "usb-c" ], "version": "0.2.0", "schema_version": "1.4.0", "taxonomy": [ "microcontroller.seeed_mcu", "microcontroller.esp32", "connectivity.wireless" ] }, "domains": [ { "domain": "electrical", "power_domains": [ { "id": "usb_5v", "name": "USB / 5V rail", "nominal_voltage_V": 5, "voltage_range_V": { "min": 4.75, "max": 5.25 }, "max_current_mA": 500 }, { "id": "regulated_3v3", "name": "3.3V regulator output", "nominal_voltage_V": 3.3, "voltage_range_V": { "min": 3, "max": 3.6 }, "max_current_mA": 700 }, { "id": "io_3v3", "name": "3.3V digital/analog I/O reference", "nominal_voltage_V": 3.3, "voltage_range_V": { "min": 3, "max": 3.6 }, "max_current_mA": 20 }, { "id": "gnd", "name": "Ground", "nominal_voltage_V": 0, "voltage_range_V": { "min": 0, "max": 0 }, "max_current_mA": 2000 } ], "resources": [ { "id": "usb_c", "name": "USB-C receptacle", "connector_type": "usb_c", "power_domain_id": "usb_5v", "functions": [ { "name": "power_input", "direction": "input", "shareable_with": [ "usb_dp", "usb_dm", "ground" ] }, { "name": "usb_dp", "direction": "bidirectional", "shareable_with": [ "power_input", "usb_dm", "ground" ] }, { "name": "usb_dm", "direction": "bidirectional", "shareable_with": [ "power_input", "usb_dp", "ground" ] }, { "name": "ground", "direction": "bidirectional", "shareable_with": [ "power_input", "usb_dp", "usb_dm" ] } ] }, { "id": "pin_5v", "name": "5V pin", "connector_type": "pin", "power_domain_id": "usb_5v", "functions": [ { "name": "power_input", "direction": "input", "shareable_with": [ "power_output" ] }, { "name": "power_output", "direction": "output", "shareable_with": [ "power_input" ] } ] }, { "id": "pin_3v3", "name": "3V3 pin", "connector_type": "pin", "power_domain_id": "regulated_3v3", "functions": [ { "name": "power_output", "direction": "output" } ] }, { "id": "gnd_pin", "name": "GND pin", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "d0", "name": "D0 / A0", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" } ] }, { "id": "d1", "name": "D1 / A1", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" } ] }, { "id": "d2", "name": "D2 / A2", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" } ] }, { "id": "d3", "name": "D3 / A3", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" } ] }, { "id": "d4", "name": "D4 / SDA", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "i2c_sda", "direction": "bidirectional" } ] }, { "id": "d5", "name": "D5 / SCL", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "i2c_scl", "direction": "bidirectional" } ] }, { "id": "d6", "name": "D6 / TX", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "uart_tx", "direction": "output" } ] }, { "id": "d7", "name": "D7 / RX (also usable as SPI SS)", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "uart_rx", "direction": "input" }, { "name": "spi_ss", "direction": "output" } ] }, { "id": "d8", "name": "D8 / SCK", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spi_sck", "direction": "output" } ] }, { "id": "d9", "name": "D9 / MISO", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spi_miso", "direction": "input" } ] }, { "id": "d10", "name": "D10 / MOSI", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spi_mosi", "direction": "output" } ] } ], "interfaces": [ { "id": "power_in_usb", "name": "5V power in", "protocol": { "type": "power", "role": "input" }, "requires": [ { "function": "power_input", "count": 1 }, { "function": "ground", "count": 1 } ] }, { "id": "power_out_3v3", "name": "3.3V power out", "protocol": { "type": "power", "role": "output" }, "requires": [ { "function": "power_output", "count": 1 }, { "function": "ground", "count": 1 } ] }, { "id": "usb_device", "name": "USB device/data", "protocol": { "type": "usb", "role": "device" }, "requires": [ { "function": "usb_dp", "count": 1 }, { "function": "usb_dm", "count": 1 } ] }, { "id": "gpio", "name": "GPIO (single pin)", "protocol": { "type": "digital", "role": "peer" }, "requires": [ { "function": "digital_io", "count": 1 } ] }, { "id": "adc_in", "name": "ADC (single channel)", "protocol": { "type": "analog", "role": "input" }, "requires": [ { "function": "analog_input", "count": 1 } ] }, { "id": "i2c_master", "name": "I2C master", "protocol": { "type": "i2c", "role": "master" }, "requires": [ { "function": "i2c_sda", "count": 1 }, { "function": "i2c_scl", "count": 1 } ] }, { "id": "spi_master", "name": "SPI master", "protocol": { "type": "spi", "role": "master" }, "requires": [ { "function": "spi_sck", "count": 1 }, { "function": "spi_mosi", "count": 1 }, { "function": "spi_miso", "count": 1 }, { "function": "spi_ss", "count": 1 } ] }, { "id": "uart", "name": "UART", "protocol": { "type": "uart", "role": "peer" }, "requires": [ { "function": "uart_tx", "count": 1 }, { "function": "uart_rx", "count": 1 } ] } ] }, { "domain": "network", "resources": [ { "id": "ufl_antenna", "name": "U.FL external antenna connector", "resource_type": "physical_port", "port_specifications": { "port_type": "wireless", "connector": "u.fl" }, "functions": [ { "name": "wifi_antenna", "direction": "bidirectional", "shareable_with": [ "bluetooth_antenna" ] }, { "name": "bluetooth_antenna", "direction": "bidirectional", "shareable_with": [ "wifi_antenna" ] } ] } ], "interfaces": [ { "id": "wifi_client", "name": "Wi-Fi (client)", "protocol": { "type": "wifi", "role": "client" }, "requires": [ { "function": "wifi_antenna", "count": 1 } ] }, { "id": "bluetooth_peer", "name": "Bluetooth LE", "protocol": { "type": "bluetooth", "role": "peer" }, "requires": [ { "function": "bluetooth_antenna", "count": 1 } ] } ], "wireless_capabilities": { "supported_wireless_standards": [ "802.11 b/g/n (2.4GHz)", "Bluetooth 5 (LE)" ] } }, { "domain": "thermal", "resources": [], "interfaces": [], "operating_temperature_C": { "min": -40, "max": 85 } }, { "domain": "mechanical", "resources": [], "interfaces": [], "dimensions_mm": { "length": 21, "width": 17.8 } } ], "warnings": [ "All GPIO/ADC are 3.3V-domain; do not apply 5V logic directly.", "D6/D7 are the default UART TX/RX pins; D7 is also modeled as SPI SS, so UART and SPI-SS may contend if both are required simultaneously.", "Some pins are strapping/boot sensitive (board docs recommend avoiding external pulls on certain pins during reset/boot).", "USB 5V available current depends on the upstream USB source and any onboard protection; treat 500mA as a USB2.0 default-budget, not a guaranteed board output capability." ] }