Power supply circuitry for a microcomputer system

Details Power supply circuitry for a microcomputer system Power supply circuitry for a microcomputer system

1983-11-03

1986-09-30

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307296R, 364707, H03K 3013, G06F 1100

Patent

active

046148809

ABSTRACT:
A power supply circuitry for a microcomputer system made up of a control unit including a microprocessor and a peripheral circuit, is provided with a delay switch circuit (55) for controlling the operation of the second regulator means (41) which provides a power current to the peripheral circuit of the microcomputer system. The delay switch circuit is responsive to a reset signal produced by a reset signal generating means connected to a first regulator means (34) for the control unit, and generates a signal for activating the second regulator means shortly after the extinction of the reset signal so that the operation of the peripheral circuit is prevented during a period of a reset operation of the microprocessor.

REFERENCES:
patent: 4234920 (1980-11-01), Van Ness et al.
patent: 4433390 (1984-02-01), Carp et al.
patent: 4518865 (1985-05-01), Iwasaki

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