Power down state machine for PCMCIA PC card applications

Details Power down state machine for PCMCIA PC card applications Power down state machine for PCMCIA PC card applications

1994-09-19

1996-08-13

Ray, Gopal C.

Boots, shoes, and leggings

364707, 3642731, 3642733, 3642735, 364DIG1, G06F 132

Patent

active

055465900

ABSTRACT:
An apparatus and method for removing and applying power to circuitry within a Personal Computer Memory Card International Association (PCMCIA) PC card so as to reduce power consumption and, thus, prolong battery life for a portable computer system or electronic device, hereinafter referred to as a host system, in which the PC card is plugged is described. The PC card employs logic controlled by the host system to properly sequence control lines to and removal of power from the PC card circuitry to be powered down so as to prevent the occurrence of a CMOS latchup condition, allow for data to be saved and later restored when the circuitry is powered up, and maximize reduction in power consumption by the host system.

REFERENCES:
patent: 4075691 (1978-02-01), Davis et al.
patent: 4809163 (1989-02-01), Hirosawa et al.
patent: 4841440 (1989-06-01), Yonezu et al.
patent: 5167024 (1992-11-01), Smith et al.
patent: 5230074 (1993-07-01), Canova, Jr. et al.
patent: 5390350 (1995-02-01), Chung et al.
patent: 5450551 (1995-09-01), Amini et al.
patent: 5451933 (1995-09-01), Stricklin et al.
patent: 5455572 (1995-10-01), Cannon et al.

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