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:
Mar. 23, 2021
Filed:
May. 12, 2020
Winbond Electronics Corp., Taichung, TW;
Naoaki Sudo, Yokohama, JP;
WINBOND ELECTRONICS CORP., Taichung, TW;
Abstract
A semiconductor deviceof the invention includes a supply voltage VCC, a plurality of registers, a PMOS transistor P, an AND gate, and a determination circuit. The registersinclude a first register and a second register. The first register can keep data, and the second register can keep a check bit. The PMOS transistor P and the AND gateare both connected between the supply voltage VCC and the registers, and both control the supply from the supply voltage VCC to the registers. The determination circuitdetermines whether the check bit kept in the second register is correct or not in a DPD (deep-power-down) mode. An operating margin of the second register is worse than that of the first register. While the determination circuit 16 determines that the check bit kept in the second register is incorrect, the PMOS transistor P provides the supply voltage VCC to the registers