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:
May. 14, 2013
Filed:
Aug. 18, 2008
Applicant:
Xiaojun Zeng, Shanghai, CN;
Inventor:
Xiaojun Zeng, Shanghai, CN;
Assignee:
O2Micro Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/312 (2006.01); G06F 12/06 (2006.01); G06F 9/318 (2006.01);
U.S. Cl.
CPC ...
Abstract
A microcontroller includes a plurality of primary registers, a secondary register and a central processing unit (CPU). The primary registers store a plurality of primary data respectively. Each primary data has a first width. The secondary register includes the plurality of primary registers and stores a secondary data having a second width. The secondary data includes a combination of the plurality of primary data. The CPU executes a first instruction in a first mode in which a primary data is fetched for operation and executes a second instruction in a second mode in which the secondary data is fetched for operation.