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. 18, 2008
Filed:
Dec. 19, 2003
Hiromi Notani, Tokyo, JP;
Hiromi Notani, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A data storage circuit having a plurality of memory cells (S), a plurality of bit lines (BL, /BL) and a precharge circuit further comprises a discharge circuit. In an operating mode of the data storage circuit, the bit lines (BL, /BL) are precharged by the precharge circuit under the control on the basis of a chip enable signal (CE) before write or read of data into/from the memory cells (S) and in a standby state, the bit lines (BL, /BL) are discharged by the discharge circuit. Further, also in a sleep mode, the bit lines (BL, /BL) are discharged by the discharge circuit. With this circuit configuration and operation, it is possible to provide the data storage circuit which allows reduction in standby power consumption by suppressing standby currents in the standby state.