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:
Jul. 13, 2021
Filed:
Dec. 12, 2019
Nuvoton Technology Corporation, Hsinchu Science Park, TW;
Cheng-Chih Wang, Jhubei, TW;
NUVOTON TECHNOLOGY CORPORATION, Hsinchu Science Park, TW;
Abstract
A data processing system includes a memory device, a predetermined voltage generating circuit and a reference voltage generating circuit. The memory device stores system data and operates based on a system high voltage. The predetermined voltage generating circuit is coupled to the memory device and generates a predetermined voltage having a target voltage level according to a reference voltage. The target voltage level is the voltage level required for performing a write operation or an erase operation of the memory device. The reference voltage generating circuit generates the reference voltage. A voltage generator of the reference voltage generating circuit is enabled or disabled in response to a write protection signal, so as to selectively output the reference voltage. When the voltage generator is disabled, the reference voltage will not be output and the predetermined voltage having a target voltage level will accordingly not be generated.