US 9,812,224 B2
Data storage system, data storage device and RAID controller
Eun-Jin Yun, Seoul (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Yeongtong-gu, Suwon-si, Gyeonggi-do (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Jul. 15, 2015, as Appl. No. 14/800,614.
Claims priority of application No. 10-2014-0139123 (KR), filed on Oct. 15, 2014.
Prior Publication US 2016/0110255 A1, Apr. 21, 2016
Int. Cl. G11C 29/00 (2006.01); G11C 29/52 (2006.01); G06F 11/10 (2006.01); G11C 16/34 (2006.01); G11C 29/04 (2006.01)
CPC G11C 29/52 (2013.01) [G06F 11/108 (2013.01); G06F 11/1012 (2013.01); G11C 16/3418 (2013.01); G11C 2029/0411 (2013.01)] 20 Claims
OG exemplary drawing
 
18. A semiconductor device comprising:
a nonvolatile memory comprising m memory chips, where m is a natural number greater than one;
a memory controller configured to control access operations of the m memory chips; and
a RAID controller configured to turn ON and OFF a RAID operation of the memory controller by transmitting a RAID operation signal to the memory controller,
wherein the memory controller is further configured to write a data unit to each of m−1 of the memory chips and a parity value calculated from the data unit to an mth memory chip when the RAID operation of the memory controller is ON, and
wherein the memory controller is further configured to write the data unit to each of the m memory chips when the RAID operation of the memory controller is OFF.