DUTY DETECTION CIRCUIT, DLL CIRCUIT USING THE SAME, SEMICONDUCTOR MEMORY CIRCUIT, AND DATA PROCESSING SYSTEM

A duty detection circuit includes discharge transistors, charge transistors, detection lines, and a comparator circuit that detects a potential difference of these detection lines, and also includes a gate circuit that controls the discharge transistors and the charge transistors in response to the...

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Bibliographic Details
Main Authors KUROKI KOJI, TAKAI YASUHIRO
Format Patent
LanguageEnglish
Published 15.01.2009
Subjects
INFORMATION STORAGE
PHYSICS
STATIC STORES
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Summary:A duty detection circuit includes discharge transistors, charge transistors, detection lines, and a comparator circuit that detects a potential difference of these detection lines, and also includes a gate circuit that controls the discharge transistors and the charge transistors in response to the internal clock signal of an even cycle. As a result, the detection lines are charged and discharged in response to the internal clock signal of the even cycle. Consequently, the duty detection circuit can be applied to a multi-phase DLL circuit, and a potential difference appearing in the detection line can be sufficiently secured.
Bibliography:Application Number: US20080170730