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:
Jan. 05, 2016
Filed:
Nov. 07, 2012
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Greg M Hess, Mountain View, CA (US);
James E Burnette, II, San Jose, CA (US);
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 29/50 (2006.01); G11C 8/16 (2006.01);
U.S. Cl.
CPC ...
G11C 29/50012 (2013.01); G11C 8/16 (2013.01);
Abstract
Embodiments of a register file test circuit are disclosed that may allow for determining write performance at low power supply voltages. The register file test circuit may include a decoder, a multiplexer, a frequency divider, and a control circuit. The decoder may be operable to select a register cell within a register file, and the control circuit may be operable to controllably activate the read and write paths through the selected register cell, allowing data read to be inverted and re-written back into the selected register cell.