The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 1994
Filed:
Apr. 08, 1993
Takuya Fujimoro, Kawasaki, JP;
Yukio Wada, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A power-on reset system comprises one-shot pulse generator for generating a one-shot pulse signal in response to a change in the power supply potential, a flip-flop to be set to operate by a one shot pulse signal and a timer to be activated by an output signal of said flip-flop operating as an enable signal for timing a given period of time. An output signal of said timer operates to reset the flip-flop so that the output of said flip-flop is utilized as a system reset signal. The timer includes an oscillator and a counter for counting oscillation signals. A voltage step-up means has an input responsive to the oscillation signals. With such an arrangement, the overall surface area of an LSI incorporating the system is minimized and a sufficiently long reset period is ensured for it.