CPU controlled apparatus formed on an IC

Details CPU controlled apparatus formed on an IC CPU controlled apparatus formed on an IC

1994-04-25

1996-07-16

Pan, Daniel H.

Static information storage and retrieval

Magnetic bubbles

Guide structure

365229, 364DIG1, 364DIG2, 395550, 3951822, G06F 126, G06F 108, G06F 924, G06F 124

Patent

active

055375995

ABSTRACT:
In a game software apparatus, a ROM incorporating a program, a decoder for supplying a selection signal of the ROM, a backup RAM for holding a function from a CPU incorporated in a game machine and a decoder for controlling the RAM are activated by a power supplied from the game machine. When the power from the game machine is cut off, the power source is changed by a changeover circuit so that power is supplied from a battery incorporated in the game software apparatus to the RAM and to the decoder while the power from the game machine is being cut. The two decoders and the changeover circuit are provided on a one-chip IC.

REFERENCES:
patent: 3906453 (1975-09-01), Mattedi et al.
patent: 4316248 (1982-02-01), Retter
patent: 4400772 (1983-08-01), Broyles et al.
patent: 4527798 (1985-07-01), Siekierski et al.
patent: 4779007 (1988-10-01), Schlanger et al.
patent: 4782468 (1988-11-01), Jones et al.
patent: 4791629 (1988-12-01), Burns et al.
patent: 5315533 (1994-05-01), Stich et al.
patent: 5408672 (1995-04-01), Miyazawa et al.
Maxim 1992 Analog Design Guide Series Book 1, MAX696 pages 5-33 to 5-44.

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