M34556G8FP microcomputer equivalent, single-chip 4-bit cmos microcomputer.
qMinimum instruction execution time Mask ROM version .. 0.5 µs (at 6 MHz oscillation frequency, in high-speed through-mode) One Time PROM version . 0.68 µs (at 4.4 MHz os.
The 4556 Group is a 4-bit single-chip microcomputer designed with CMOS technology. Its CPU is that of the 4500 series using a simple, high-speed instruction set. The computer is equipped with two 8-bit timers (each timer has one or two reload registe.
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