Low power microcontrollers come with USB support, peripherals

MICROCHIP PIC32MM ‘GPM’ microcontrollers (MCUs) are eXtreme Low Power (XLP) devices that provide large memory in small packages, including ample battery life for space-constrained applications. With the inclusion of several connectivity options, Core Independent Peripherals and feature-rich development boards, devices are suitable for digital audio applications, gaming/entertainment devices, Internet of Things (IoT) sensor nodes and portable medical devices. MCU family enables developers to minimize power consumption, board space and development time. http://www.microchip.com