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:
May. 24, 1994
Filed:
Oct. 15, 1992
Masaki Nishimoto, Hyogo, JP;
Junko Matsumoto, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor memory device is provided with a plurality of input circuits each having a mask information generating circuit to enable bit writing in page mode. The mask information generating circuit generates mask information from a mask control signal supplied from a mask control circuit, mask data supplied from a mask data input buffer circuit, an internal signal and a special function signal. The mask information generating circuit controls the mask information, depending on the state of the special function signal at the fall of an external column address strobe signal such that the mask information may change on each column address strobe cycle.