US 12,224,034 B2
Memory device and data approximation search method thereof
Chih-Chang Hsieh, Hsinchu (TW); and Hang-Ting Lue, Hsinchu County (TW)
Assigned to MACRONIX International Co., Ltd., Hsinchu (TW)
Filed by MACRONIX International Co., Ltd., Hsinchu (TW)
Filed on May 3, 2023, as Appl. No. 18/311,800.
Application 18/311,800 is a continuation in part of application No. 17/742,148, filed on May 11, 2022, granted, now 12,073,883.
Claims priority of provisional application 63/439,599, filed on Jan. 18, 2023.
Prior Publication US 2023/0368821 A1, Nov. 16, 2023
Int. Cl. G11C 7/08 (2006.01); G06F 7/501 (2006.01); G11C 7/10 (2006.01); G11C 7/12 (2006.01)
CPC G11C 7/08 (2013.01) [G06F 7/501 (2013.01); G11C 7/1096 (2013.01); G11C 7/12 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A memory device, comprising:
a plurality of selection switch pairs, respectively receiving a plurality of search data pairs;
a plurality of memory cell string pairs, respectively coupled to a global bit line through the selection switch pairs, wherein each of the memory cell string pairs determines whether to provide current on the global bit line according to stored data of a selected memory cell pair and each of the search data pairs;
a sense amplifier, coupled to the global bit line, obtaining one of a plurality of search results according to the current on the global bit line and at least one reference current respectively corresponding to at least one similarity; and
a page buffer, recording the search results and generating similarity information by accumulating the search results generated time-divisionally.