The KS57C4104/KS57C4204/KS57C4304 single-chip CMOS microcontroller has been designed for very high performance using Samsung's newest 4-bit CPU core, SAM47 (Samsung Arrangeable Microcontroller). With an A/D converter, LED direct drive pins, an 8-bit serial I/O interface, and an 8-bit timer/counter, the KS57C4104/KS57C4204/KS57C4304 offers you an excellent design solution for a wide variety of home appliance applications -- electric fans, cookers, boilers, and air conditioners, for example. Up to 35 pins of the 42-pin SDIP or 44-pin QFP package can be dedicated to I/O. Seven vectored interrupts provide fast response to internal and external events. In addition, the KS57C4104/KS57C4204/KS57C4304's advanced CMOS technology provides for low power consumption and a wide operating voltage range.