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:
Dec. 26, 2000
Filed:
Mar. 19, 1999
Ken Saitoh, Yokohama, JP;
Shoji Wada, Tokyo, JP;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A dynamic random access memory device having a number of sense amplifier banks (404a-404h) is disclosed. Each sense amplifier bank (404a-404h) has an associated memory array (402a-402h) and supply switch (406a-406h). In a given sense operation, data signals are coupled from a memory array (402a-402h) to its associated sense amplifier bank (404a-404h). Selection of the memory array (402a-402h) is determined by address signals (MS0-MS7). The supply switches (406a-406h) provide a sense amplifier supply voltage at a supply node (708) of its associated sense amplifier bank (404a-404h). At the initial portion of a sense operation, the supply switch (406a-406h) couples the high power supply voltage (VDD) to its associated supply node (708). After a predetermined time period, the supply switch couples a reduced array voltage (VDL) to its associated supply node (708). The switching operation is determined by an overdrive signal (SAOV). The timing of the SAOV signal is based upon the location of the memory array (402a-402h) which is being accessed in the sense operation.