Reset circuit and system having reset circuit

Details Reset circuit and system having reset circuit Reset circuit and system having reset circuit

2007-11-26

2010-02-09

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S198000

Reexamination Certificate

active

07659758

ABSTRACT:
In a power-on detection circuit, a first connection node at which a first divided voltage is generated is connected to a second power supply line during activation of a power-down detection signal. Inactivation timing of the power-down detection signal is set earlier than an activation timing of a power-on detection signal. Therefore, the first transistor whose gate is connected to the first connection node is certainly turned off in the first half of a power-on period, which prevents the power-on detection signal from being activated during the power-on period. Further, a leak current flowing through the first transistor is reduced. In the second half of the power-on period, the power-on detection signal is certainly generated using the first divided voltage generated by the first dividing circuit. Thus, operating a reset circuit without malfunction and normally outputting a reset signal is possible disregarding behavior of a power supply voltage at power-on.

REFERENCES:
patent: 7425854 (2008-09-01), Suzuki
patent: 7545186 (2009-06-01), Suzuki et al.
patent: 2005/0275437 (2005-12-01), Suzuki et al.
patent: 2007/0159222 (2007-07-01), Ogai et al.

Affiliated with

Also associated with

Rating

Reset circuit and system having reset circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reset circuit and system having reset circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reset circuit and system having reset circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4160044