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. 14, 2017
Filed:
Dec. 21, 2015
Shanghai Huahong Grace Semiconductor Manufacturing Corporation, Shanghai, CN;
Yong Zhang, Shanghai, CN;
Jun Xiao, Shanghai, CN;
Abstract
A circuit for control of time for read operation is disclosed which additionally incorporates a dummy device circuit and a dummy sensitive amplifier circuit, uses a current mirror circuit to mirror a reference current in a reference device circuit into the dummy device circuit to generate a mirrored current, and generates time control signals based on the mirrored current. Due to the same adaptation of the mirrored current to the size of a test device as the reference current, the time control signals are also adapted to the size of the test device. This addresses the problem of fixed time control signals arising from the use of a conventional RC relay circuit and enables the time control signals to change with the size of the test device as well as Process Voltage Temperature, thereby resulting in an effective reduction in average energy consumed in read operation.