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:
Aug. 19, 2014
Filed:
Dec. 21, 2012
Spansion Llc, Sunnyvale, CA (US);
Masahiro Niimi, Aichiken, JP;
Spansion LLC, Sunnyvale, CA (US);
Abstract
Memory cell regions as units of erasing operation are sectors S, and units of reading operation and/or writing operation are blocks Bto Bin a sector, in which a block address BA for selecting one of blocks Bto Bis held in block address buffer (BAB). Holding operation is executed prior to reading or writing operation, and hence in subsequent reading operation or writing operation, re-input is not needed. Depending on the held block address BA, any one of selection signals YDn (n=0 to 3) is selected, and any one block is selected depending on the selection signal YDn. This state is maintained until the block address BA held in the block address buffer (BAB)is rewritten, and therefore it is not required to enter or decode the block address BA on every occasion of reading and/or writing operation, so that the access operation can be executed promptly and at low current consumption.