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. 30, 2023
Filed:
Feb. 24, 2022
Fremont Micro Devices Corporation, Guangdong, CN;
Fremont Micro Devices Corporation, Shenzhen, CN;
Abstract
A chip, a self-calibration circuit and method for chip parameter offset upon power-up are disclosed. The circuit includes a counting circuit, a calibration data latch circuit, a calibration data selection circuit and a parameter calibration circuit. The counting circuit outputs a sequentially scanned counting signal when receiving a valid enabling signal. The calibration data latch circuit latches the counting signal when receiving a valid latch signal. The calibration data selection circuit selects the counting signal latched by the calibration data latch circuit as a calibration signal when receiving the valid latch signal, otherwise selects the counting signal currently outputted as the calibration signal. The parameter calibration circuit implements a parameter calibration based on the calibration signal in a calibration mode, while outputs the valid latch signal when the parameter calibration satisfies a preset requirement. Thus, a parameter calibration with a higher accuracy and flexibility is realized in a cheaper way.