The PD75512(A) is a 4-bit single-chip microcomputer which employs 75X series architecture, and its performance is comparable to that of an 8-bit microcomputer. In addition to its high-speed processing capabilities, the PD75512(A) is also capable of processing data in units of 1, 4, or in 8-bits. With its internally provided A/D converter and serial interface, the PD75512(A) provides the highest performance in its class. Detailed functions are described in the following user`s manual. Be sure to read it for designing.