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C553x ultra-low-power DSP , the industry's lowest total power DSPs with total active core power MSP430™ microcontroller offers five power modes with one of the industry's lowest standby power options of 0.4 μA and MSP430 capacitive touch interface allows users to control volume, select song titles and record and playback audio files. Integrated LED display, high-speed USB 2.0 and SD/MMC interfaces offer an enhanced user experience. Free capacitive touch library enables capacitive touch buttons, sliders, wheels and proximity sensors on all MSP430 microcontrollers, eliminating the need for developers to create complex touch-sensing algorithms. Supported by a complete OLED user interface and MP3 record/playback software library, easing development.