{ "metadata": { "id": "espressif-esp32-c3-devkitm-1-n4x", "name": "Espressif ESP32-C3-DevKitM-1-N4X", "type": "mcu_dev_board", "manufacturer": "Espressif Systems", "part_number": "ESP32-C3-DevKitM-1-N4X", "datasheet_url": "https://docs.espressif.com/projects/esp-dev-kits/en/latest/esp32c3/esp32-c3-devkitm-1/user_guide.html", "description": "Entry-level ESP32-C3 development board (RISC-V) with integrated 4 MB flash, Micro-USB power/programming, and Wi-Fi + Bluetooth LE connectivity.", "tags": [ "esp32-c3", "dev-board", "risc-v", "wifi", "bluetooth-le", "micro-usb" ], "version": "1.0.0-rc.0", "schema_version": "1.4.0", "taxonomy": [ "microcontroller.esp32", "connectivity.wireless" ] }, "domains": [ { "domain": "electrical", "power_domains": [ { "id": "usb_5v", "name": "5V input rail", "nominal_voltage_V": 5, "voltage_range_V": { "min": 4.75, "max": 5.25 } }, { "id": "io_3v3", "name": "3.3V logic rail", "nominal_voltage_V": 3.3, "voltage_range_V": { "min": 3, "max": 3.6 } }, { "id": "gnd", "name": "Ground", "nominal_voltage_V": 0, "voltage_range_V": { "min": 0, "max": 0 } } ], "resources": [ { "id": "micro_usb", "name": "micro_usb", "connector_type": "micro_usb", "power_domain_id": "usb_5v", "functions": [ { "name": "micro_usb", "direction": "bidirectional" } ], "description": "Bundled Micro-USB connector for board power, programming, and USB-UART access." }, { "id": "pin_5v_1", "name": "5V", "connector_type": "pin", "power_domain_id": "usb_5v", "functions": [ { "name": "power_input", "direction": "input" }, { "name": "power_output", "direction": "output" } ] }, { "id": "pin_5v_2", "name": "5V", "connector_type": "pin", "power_domain_id": "usb_5v", "functions": [ { "name": "power_input", "direction": "input" }, { "name": "power_output", "direction": "output" } ] }, { "id": "pin_3v3_1", "name": "3V3", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "power_input", "direction": "input" }, { "name": "power_output", "direction": "output" } ] }, { "id": "pin_3v3_2", "name": "3V3", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "power_input", "direction": "input" }, { "name": "power_output", "direction": "output" } ] }, { "id": "rst", "name": "RST / CHIP_PU / PU", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "reset", "direction": "input" }, { "name": "chip_pu", "direction": "input" }, { "name": "pu", "direction": "input" } ], "description": "Chip enable and reset pin. Pull low to reset or power down the chip." }, { "id": "gpio0", "name": "GPIO0 / ADC1_0 / XTAL32K_P / RTC", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" }, { "name": "rtc_gpio", "direction": "bidirectional" }, { "name": "xtal32k_p", "direction": "bidirectional" } ], "description": "GPIO0 with ADC1_CH0, RTC capability, and XTAL32K_P low-frequency crystal connection." }, { "id": "gpio1", "name": "GPIO1 / ADC1_1 / XTAL32K_N / RTC", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" }, { "name": "rtc_gpio", "direction": "bidirectional" }, { "name": "xtal32k_n", "direction": "bidirectional" } ], "description": "GPIO1 with ADC1_CH1, RTC capability, and XTAL32K_N low-frequency crystal connection." }, { "id": "gpio2", "name": "GPIO2 / ADC1_2 / RTC / STRAP / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" }, { "name": "rtc_gpio", "direction": "bidirectional" }, { "name": "fspiq", "direction": "input" }, { "name": "ie", "direction": "config" } ], "description": "GPIO2 with ADC1_CH2, RTC capability, and FSPIQ alternate function. Default pin setting after reset: IE." }, { "id": "gpio3", "name": "GPIO3 / ADC1_3 / RTC / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" }, { "name": "rtc_gpio", "direction": "bidirectional" }, { "name": "ie", "direction": "config" } ], "description": "GPIO3 with ADC1_CH3 and RTC capability. Default pin setting after reset: IE." }, { "id": "gpio4", "name": "GPIO4 / ADC1_4 / RTC / MTMS / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" }, { "name": "rtc_gpio", "direction": "bidirectional" }, { "name": "fspihd", "direction": "bidirectional" }, { "name": "mtms", "direction": "input" }, { "name": "ie", "direction": "config" } ], "description": "GPIO4 with ADC1_CH4, RTC capability, MTMS JTAG function, and FSPIHD alternate function. Default pin setting after reset: IE." }, { "id": "gpio5", "name": "GPIO5 / ADC2_0 / RTC / MTDI / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "analog_input", "direction": "input" }, { "name": "rtc_gpio", "direction": "bidirectional" }, { "name": "fspiwp", "direction": "output" }, { "name": "mtdi", "direction": "input" }, { "name": "ie", "direction": "config" } ], "description": "GPIO5 with ADC2_CH0, RTC capability, MTDI JTAG function, and FSPIWP alternate function. Default pin setting after reset: IE." }, { "id": "gpio6", "name": "GPIO6 / MTCK / IE*", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "fspiclk", "direction": "output" }, { "name": "mtck", "direction": "input" }, { "name": "ie_star", "direction": "config" } ], "description": "GPIO6 with MTCK JTAG function and FSPICLK alternate function. Default pin setting after reset: IE*. The pull-up on MTCK depends on EFUSE_DIS_PAD_JTAG." }, { "id": "gpio7", "name": "GPIO7 / MTDO / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "fspid", "direction": "output" }, { "name": "mtdo", "direction": "output" }, { "name": "ie", "direction": "config" } ], "description": "GPIO7 with MTDO JTAG function and FSPID alternate function. Default pin setting after reset: IE." }, { "id": "gpio8", "name": "GPIO8 / STRAP / LOG / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "log_strap", "direction": "config" }, { "name": "ie", "direction": "config" } ], "description": "GPIO8 strapping pin. Also used to enable or disable ROM log printing. Default pin setting after reset: IE." }, { "id": "gpio9", "name": "GPIO9 / BOOT strap / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "boot_strap", "direction": "config" }, { "name": "ie", "direction": "config" } ], "description": "GPIO9 strapping pin used for boot mode selection. Default pin settings after reset: IE and WPU." }, { "id": "gpio10", "name": "GPIO10 / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "fspics0", "direction": "output" }, { "name": "ie", "direction": "config" } ], "description": "GPIO10 with FSPICS0 alternate function. Default pin setting after reset: IE." }, { "id": "gpio11", "name": "GPIO11", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" } ] }, { "id": "gpio12", "name": "GPIO12 / SPIHD / ID3 / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spihd", "direction": "bidirectional" }, { "name": "id3", "direction": "bidirectional" }, { "name": "ie", "direction": "config" } ], "description": "GPIO12 with SPIHD function from the SPI0/1 flash bus. Default pin settings after reset: IE and WPU." }, { "id": "gpio13", "name": "GPIO13 / SPIWP / ID2 / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spiwp", "direction": "bidirectional" }, { "name": "id2", "direction": "bidirectional" }, { "name": "ie", "direction": "config" } ], "description": "GPIO13 with SPIWP function from the SPI0/1 flash bus. Default pin settings after reset: IE and WPU." }, { "id": "gpio14", "name": "GPIO14 / SPICS0 / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spics0", "direction": "output" }, { "name": "ie", "direction": "config" } ], "description": "GPIO14 with SPICS0 function from the SPI0/1 flash bus. Default pin settings after reset: IE and WPU." }, { "id": "gpio15", "name": "GPIO15 / SPICLK / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spiclk", "direction": "output" }, { "name": "ie", "direction": "config" } ], "description": "GPIO15 with SPICLK function from the SPI0/1 flash bus. Default pin settings after reset: IE and WPU." }, { "id": "gpio16", "name": "GPIO16 / SPID / ID0 / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spid", "direction": "bidirectional" }, { "name": "id0", "direction": "bidirectional" }, { "name": "ie", "direction": "config" } ], "description": "GPIO16 with SPID function from the SPI0/1 flash bus. Default pin settings after reset: IE and WPU." }, { "id": "gpio17", "name": "GPIO17 / SPIQ / ID1 / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "spiq", "direction": "bidirectional" }, { "name": "id1", "direction": "bidirectional" }, { "name": "ie", "direction": "config" } ], "description": "GPIO17 with SPIQ function from the SPI0/1 flash bus. Default pin settings after reset: IE and WPU." }, { "id": "gpio18", "name": "GPIO18 / USB_D-", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "usb_dm", "direction": "bidirectional" } ] }, { "id": "gpio19", "name": "GPIO19 / USB_D+ / USB_PU / UPU", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "usb_dp", "direction": "bidirectional" }, { "name": "usb_pu", "direction": "config" }, { "name": "upu", "direction": "config" } ], "description": "GPIO19 with USB_D+ and USB pull-up control behavior. By default the USB Serial/JTAG pull-up is enabled on USB pins." }, { "id": "gpio20", "name": "GPIO20 / UART0_RX / IE", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "uart_rx", "direction": "input" }, { "name": "ie", "direction": "config" } ], "description": "GPIO20 with U0RXD function. Default pin settings after reset: IE and WPU." }, { "id": "gpio21", "name": "GPIO21 / UART0_TX", "connector_type": "pin", "power_domain_id": "io_3v3", "functions": [ { "name": "digital_io", "direction": "bidirectional" }, { "name": "uart_tx", "direction": "output" } ], "description": "GPIO21 with U0TXD function. Default pin setting after reset: WPU." }, { "id": "gnd_1", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_2", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_3", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_4", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_5", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_6", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_7", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_8", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_9", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] }, { "id": "gnd_10", "name": "GND", "connector_type": "pin", "power_domain_id": "gnd", "functions": [ { "name": "ground", "direction": "bidirectional" } ] } ], "interfaces": [ { "id": "micro_usb", "name": "micro_usb", "protocol": { "type": "custom", "role": "peer" }, "requires": [ { "function": "micro_usb", "count": 1 } ], "constraints": { "max_connections": 1, "requires_connector_type": "micro_usb" }, "description": "Bundled Micro-USB connector carrying board power, programming, and USB-UART data." }, { "id": "serial_uart0", "name": "Serial / UART0", "protocol": { "type": "uart", "role": "peer" }, "requires": [ { "function": "uart_tx", "count": 1 }, { "function": "uart_rx", "count": 1 } ], "description": "Primary UART serial pins exposed on GPIO20 and GPIO21." }, { "id": "usb_serial_jtag", "name": "USB Serial/JTAG", "protocol": { "type": "custom", "role": "device" }, "requires": [ { "function": "usb_dm", "count": 1 }, { "function": "usb_dp", "count": 1 } ], "max_instances": 1, "description": "Dedicated native USB Serial/JTAG interface exposed on GPIO18 and GPIO19." }, { "id": "jtag", "name": "JTAG", "protocol": { "type": "custom", "role": "peer" }, "requires": [ { "function": "mtms", "count": 1 }, { "function": "mtdi", "count": 1 }, { "function": "mtck", "count": 1 }, { "function": "mtdo", "count": 1 } ], "max_instances": 1, "description": "Dedicated JTAG debug interface exposed on GPIO4 through GPIO7." }, { "id": "gpio", "name": "GPIO", "protocol": { "type": "digital", "role": "peer" }, "requires": [ { "function": "digital_io", "count": 1 } ], "max_instances": 22 }, { "id": "adc", "name": "ADC input", "protocol": { "type": "analog", "role": "input" }, "requires": [ { "function": "analog_input", "count": 1 } ], "max_instances": 6 }, { "id": "fspi_master", "name": "FSPI", "protocol": { "type": "spi", "role": "master" }, "requires": [ { "function": "fspiclk", "count": 1 }, { "function": "fspid", "count": 1 }, { "function": "fspiq", "count": 1 }, { "function": "fspics0", "count": 1 } ], "description": "Default FSPI signal set routed through GPIO2, GPIO6, GPIO7, and GPIO10." } ] }, { "domain": "network", "resources": [ { "id": "wifi_radio", "name": "2.4 GHz Wi-Fi radio", "resource_type": "radio", "functions": [ { "name": "wifi_rf", "direction": "bidirectional" } ] }, { "id": "ble_radio", "name": "Bluetooth LE radio", "resource_type": "radio", "functions": [ { "name": "bluetooth_rf", "direction": "bidirectional" } ] } ], "interfaces": [ { "id": "wifi_client", "name": "Wi-Fi", "protocol": { "type": "wifi", "role": "client" }, "requires": [ { "function": "wifi_rf", "count": 1 } ] }, { "id": "bluetooth_peer", "name": "Bluetooth LE", "protocol": { "type": "bluetooth", "role": "peer" }, "requires": [ { "function": "bluetooth_rf", "count": 1 } ] } ], "wireless_capabilities": { "supported_wireless_standards": [ "802.11 b/g/n (2.4GHz)", "Bluetooth Low Energy" ] } }, { "domain": "thermal", "resources": [], "interfaces": [], "operating_temperature_C": { "min": -40, "max": 85 } }, { "domain": "mechanical", "resources": [], "interfaces": [] } ], "warnings": [ "GPIO2, GPIO8, and GPIO9 are strapping pins and should not be forced to conflicting levels during reset.", "Use a data-capable Micro-USB cable for flashing/programming; charge-only cables will not enumerate the USB-UART bridge.", "The board can be powered from Micro-USB, 5V header, or 3V3 header, but these supply methods are mutually exclusive.", "All GPIO signals are 3.3V logic; avoid direct 5V GPIO drive." ] }