A microcontroller includes an external interface terminal group, a data transmitreceive section, and a DMA controller comprised of an address register for storing therein an address of a hardware serving as an object to be accessed by DMA, registers for executing readwrite by the DMA, a control flag for controlling the start of the DMA, and a timing controller of the DMA. The device receives at least one reference voltage and provides an regulated output voltage to at least one load. The frame support includes a first elongate member positionable adjacent the frame and configured for connection of the vertical frame members to the frame support, and a second elongate member extending from the first elongate member. Each spine comprises at least one electrode, preferably a tip electrode and at least one ring electrode. A difference between a thermal expansion coefficient of the current-constricting layer and a thermal expansion coefficient of the second layer is in the range of 4109 C.