Invention Grant
US08385110B2 Semiconductor memory device with security function and control method thereof
有权
具有安全功能的半导体存储器件及其控制方法
- Patent Title: Semiconductor memory device with security function and control method thereof
- Patent Title (中): 具有安全功能的半导体存储器件及其控制方法
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Application No.: US12827780Application Date: 2010-06-30
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Publication No.: US08385110B2Publication Date: 2013-02-26
- Inventor: Ji Hyae Bae
- Applicant: Ji Hyae Bae
- Applicant Address: KR Icheon
- Assignee: Hynix Semiconductor Inc.
- Current Assignee: Hynix Semiconductor Inc.
- Current Assignee Address: KR Icheon
- Priority: KR10-2010-0007861 20100128
- Main IPC: G11C11/00
- IPC: G11C11/00
Abstract:
A semiconductor memory device includes a security controller. When a one time programmable (OTP) device is programmed, the semiconductor memory device prohibits lock-status information pre-stored in an OTP lock register from being changed to an unlock status, such that it increases the stability of data stored in an OTP area. The semiconductor memory device includes an OTP device configured to determine whether or not data is changed according to a lock/unlock status when a program command is received, and an OTP controller configured to prohibit the lock status from being changed to the unlock status.
Public/Granted literature
- US20110182101A1 SEMICONDUCTOR MEMORY DEVICE WITH SECURITY FUNCTION AND CONTROL METHOD THEREOF Public/Granted day:2011-07-28
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