{
  "build": {
    "core": "stm32", 
    "cpu": "cortex-m4", 
    "extra_flags": "-DSTM32F4 -DSTM32F401xE -DSTM32F40_41xxx", 
    "f_cpu": "84000000L", 
    "ldscript": "stm32f401xe.ld", 
    "mcu": "stm32f401ret6", 
    "variant": "stm32f401xe"
  }, 
  "frameworks": [
    "mbed", 
    "cmsis", 
    "spl"
  ], 
  "name": "ST Nucleo F401RE", 
  "upload": {
    "maximum_ram_size": 98304, 
    "maximum_size": 524288
  }, 
  "url": "https://developer.mbed.org/platforms/ST-Nucleo-F401RE/", 
  "vendor": "ST"
}