The PD75402A(A) is a CMOS single-chip microcomputer which uses the 75X series architecture. It operates at high speed with a minimum instruction execution time of 0.95 s. The PD75P402 is also available for system development evaluation. It contains one-time PROM instead of mask ROM used in the PD75402A(A). The following user's manual describes the details of the functions of the PD75402A(A). Be sure to read it before designing an application system.