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:
Dec. 22, 2015
Filed:
Sep. 05, 2014
Tahmina Akhter, Austin, TX (US);
Gilles J. Muller, Austin, TX (US);
Ronald J. Syzdek, Austin, TX (US);
Tahmina Akhter, Austin, TX (US);
Gilles J. Muller, Austin, TX (US);
Ronald J. Syzdek, Austin, TX (US);
FREESCALE SEMICONDUCTOR, INC., Austin, TX (US);
Abstract
A circuit includes a non-volatile memory, a calibration circuit, and a sense amplifier. The sense amplifier senses a state of a memory cell during sensing. The sense amplifier includes a differential circuit having a first input coupled to a reference current source, a second input, and an output coupled to the calibration circuit during a calibration mode. A calibration current source is configured to be coupled to the second input of the differential current sensing circuit during the calibration mode and decoupled from the second input during the sensing mode. A variable current source is coupled to the differential current sensing circuit and the calibration circuit. The calibration circuit tests a plurality of currents of the variable current source during the calibration mode and selects one of the plurality of currents. The sense amplifier senses using the selected one of the plurality of currents.