µPD75064, 75066, 75068, 75064(A), 75066(A), 75068(A) 4-bit single-chip microcomputer with a minimum instruction execution time of 0.95 µs, as well as 8-channel A/D converter, 3-channel timer, NEC standard serial bus interface (SBI) and other high-performance functions, with strong functionality and high cost performance