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:
Apr. 23, 1996
Filed:
Apr. 16, 1993
William D Mensch, Jr, Mesa, AZ (US);
Other;
Abstract
A CMOS integrated circuit microcomputer is switchable under software control between high speed, high power operation and low speed, low power operation. The microcomputer includes asynchronous fast and slow clock oscillators. A synchronizing circuit coupled to the fast and slow clock oscillators receives a clock selection signal, and in response thereto produces a clock enable signal. The clock enable signal has the same frequency as and is synchronized with either the fast clock signal or the slow clock signal, depending on the state of the clock selection signal. The clock enable signal is input to gating circuitry that gates either the fast or the slow clock signal to provide a selectable speed clock signal to be used elsewhere in the microcomputer.