8bit usb flash mcu targets ic card applications

The LC87F1864A device is designed to support stable power supply, space efficient and cost effective designs in usb card reader products such as integrated circuit cards. According to the company, the integrated step up circuit and step down circuits drive output voltage values of 5, 3 and 1.8V, or the alteration of output voltage settings via an external resistor. With the addition of a universal asynchronous receiver transmitter, the ic cards interface is fully compliant with ISO7816-3 standards. "The LC87F1864A incorporates a highly versatile dc/dc converter, allowing for selection of step up/step down statuses and selection of output voltages," said Hideo Kondo, general manager of Sanyo's Micon Development Department. "Incorporating the dc/dc converter feature, which is normally used as an external ic, into the microcontroller minimises the circuit board areas, reduces costs for end products and controls the output voltage through an on/off switch."