marlinfw/buildroot/share/PlatformIO/boards/marlin_STM32F401RC.json

{
  "build": {
    "core": "stm32",
    "cpu": "cortex-m4",
    "extra_flags": "-DSTM32F401xC -DSTM32F4xx",
    "f_cpu": "84000000L",
    "mcu": "stm32f401rct6",
    "product_line": "STM32F401xC",
    "variant": "MARLIN_F401RC"
  },
  "debug": {
    "jlink_device": "STM32F401RC",
    "openocd_target": "stm32f4x",
    "svd_path": "STM32F401x.svd"
  },
  "frameworks": [
    "arduino",
    "cmsis",
    "spl",
    "stm32cube",
    "libopencm3"
  ],
  "name": "STM32F401RC (64k RAM. 256k Flash)",
  "upload": {
    "maximum_ram_size": 65536,
    "maximum_size": 262144,
    "protocol": "serial",
    "protocols": [
      "blackmagic",
      "dfu",
      "jlink",
      "serial",
      "stlink"
    ]
  },
  "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32f401rc.html",
  "vendor": "Generic"
}