US 11,055,021 B2
Resistive memory
Ping-Kun Wang, Tianzhong Township, Changhua County (TW); Shao-Ching Liao, Tongluo Township, Miaoli County (TW); Chien-Min Wu, Hsinchu (TW); Chia Hua Ho, Hsinchu (TW); Frederick Chen, Tainan (TW); He-Hsuan Chao, Hsinchu (TW); and Seow-Fong Lim, Fremont, CA (US)
Assigned to WINBOND ELECTRONICS CORP., Taichung (TW)
Filed by Winbond Electronics Corp., Taichung (TW)
Filed on Mar. 14, 2019, as Appl. No. 16/353,339.
Claims priority of application No. 107118282 (TW), filed on May 29, 2018.
Prior Publication US 2019/0369920 A1, Dec. 5, 2019
Int. Cl. G06F 3/06 (2006.01); G06F 11/07 (2006.01); G11C 13/00 (2006.01)
CPC G06F 3/0659 (2013.01) [G06F 3/0604 (2013.01); G06F 3/0673 (2013.01); G11C 13/0038 (2013.01); G11C 13/0069 (2013.01); G11C 2013/009 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A resistive memory comprising:
a storage array comprising a plurality of blocks, each comprising a plurality of memory cells;
a storage circuit storing a plurality of count values;
a control circuit generating a control signal according to the count values when an external command is a write command;
a voltage generation circuit providing an operation voltage group according to the control signal; and
an access circuit accessing the storage array according to the operation voltage group,
wherein each of the count values indicates a number of times data is written from the access circuit to a corresponding block,
wherein when the external command is the write command, the control circuit compares the count value of the block corresponding to a write address with a first threshold value,
wherein when the count value of the block corresponding to the write address is lower than the first threshold value, the control circuit sets an electrical feature of the control signal to a first predetermined value, and
wherein when the count value of the block corresponding to the write address is higher than the first threshold value, the control circuit sets the electrical feature of the control signal to a second predetermined value.