Additional FeaturesEnhanced Mid-range Core with 49 Instruction, 16 Stack LevelsFlash Program Memory with self read/write capabilityHigh Endurance Flash Memory (HEF)128 B of Non-volatile Data StorageInternal 48MHz OscillatorUniversal Serial Bus 2.0 Module with clock recovery from USB hostMI2C / SPI ModuleEnhanced Addressable USART Module25mA Source/Sink current I/O1x 8-bit Time..