Invention Grant
- Patent Title: Memory die self-disable if programmable element is not trusted
- Patent Title (中): 如果可编程元件不受信任,则内存会自行禁用
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Application No.: US13198606Application Date: 2011-08-04
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Publication No.: US08446772B2Publication Date: 2013-05-21
- Inventor: Loc Tu , Charles Moana Hook , Nyi Nyi Thein
- Applicant: Loc Tu , Charles Moana Hook , Nyi Nyi Thein
- Applicant Address: US TX Plano
- Assignee: SanDisk Technologies Inc.
- Current Assignee: SanDisk Technologies Inc.
- Current Assignee Address: US TX Plano
- Agency: Vierra Magen Marcus LLP
- Main IPC: G11C11/34
- IPC: G11C11/34

Abstract:
Techniques are disclosed herein for automatically self-disabling a memory die in the event that a programmable element on the memory die for indicating whether the memory die is defective cannot be trusted. Memory die are provided with chip enable circuitry to allow particular memory die to be disabled. If the programmable element can be trusted, the state of the programmable element is provided to the chip enable circuitry to enable/disable the memory die based on the state. However, if the programmable element cannot be trusted, then the chip enable circuitry may automatically disable the memory die. This provides a greater yield for multi-chip memory packages because packages having memory die with a programmable element that cannot be trusted can still be used.
Public/Granted literature
- US20130033935A1 MEMORY DIE SELF-DISABLE IF PROGRAMMABLE ELEMENT IS NOT TRUSTED Public/Granted day:2013-02-07
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