Single-chip micro-computer having a plurality of operation modes

Details Single-chip micro-computer having a plurality of operation modes Single-chip micro-computer having a plurality of operation modes

1994-10-17

1996-05-14

Coleman, Eric

Boots, shoes, and leggings

364933, 3649428, 3649491, 3649481, 364DIG2, G06F 300

Patent

active

055176615

ABSTRACT:
Disclosed are a single-chip micro-computer optimized for an electronic memorandum book, an electronic dictionary or the like by suppressing the increase of the number of terminals, and an electronic apparatus having therein the single-chip micro-computer. The single-chip micro-computer has: a mode setting register for establishing a mode setting signal for either a first mode for outputting a memory address signal or a second mode for outputting an arithmetic operation output stored in an output register on the basis of a control signal from a micro instruction generation circuit; and a selection circuit for outputting either the memory address signal or the arithmetic operation output to address signal terminals on the basis of the mode setting signal.

REFERENCES:
patent: 4037094 (1977-07-01), Van Dierendonck
patent: 4349870 (1982-09-01), Shaw
patent: 4439839 (1984-03-01), Kneib
patent: 4460972 (1984-07-01), Homan
patent: 4466055 (1984-08-01), Kinoshita
patent: 4491907 (1985-01-01), Koeppen
patent: 4785469 (1988-11-01), Joshi
patent: 5101498 (1992-03-01), Ehlig

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