boards_json

{
    "build": {
      "core": "stm32",
      "cpu": "cortex-m4",
      "extra_flags": "-DSTM32F401xE -DSTM32F4xx",
      "f_cpu": "84000000L",
      "mcu": "stm32f401cdu6",
      "product_line": "STM32F401xE",
      "variant": "Generic_F401Cx"
    },
    "debug": {
      "jlink_device": "STM32F401CD",
      "openocd_target": "stm32f4x",
      "svd_path": "STM32F401x.svd"
    },
    "frameworks": [
      "arduino",
      "cmsis",
      "stm32cube",
      "libopencm3"
    ],
    "name": "STM32F401CD (96k RAM. 384k Flash)",
    "upload": {
      "maximum_ram_size": 98304,
      "maximum_size": 393216,
      "protocol": "serial",
      "protocols": [
        "blackmagic",
        "dfu",
        "jlink",
        "serial",
        "stlink"
      ]
    },
    "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32f401cd.html",
    "vendor": "Generic"
  }