公开(公告)号：US20180174629A1

公开(公告)日：2018-06-21

申请号：US15638516

申请日：2017-06-30

Applicant: SK hynix Inc.

Inventor： Jin Yong SEONG ,  Gun Gi SONG ,  Young Sang AHN ,  Jae Won CHA

IPC: G11C7/24 ,  G11C7/10 ,  G06F11/30

CPC classification number: G11C7/24 ,  G06F11/3037 ,  G11C7/10 ,  G11C7/1063 ,  G11C16/22

Abstract: Provided herein may be a memory system and a method of operating the same. A semiconductor memory device may include a write protect pin mode setting unit configured to set, depending on a parameter value stored therein, a write protect pin of the semiconductor memory device as any one of an input pin and an output pin and a control logic configured to output, when the write protect pin serves as the output pin, internal state information of the semiconductor memory device to an external device.