发明申请
US20100226194A1 POWER-FAILURE PROTECTION CIRCUIT FOR NON-VOLATILE SEMICONDUCTOR STORAGE DEVICES AND METHOD FOR PREVENTING UNEXPECTED POWER-FAILURE USING THE SAME
有权
用于非易失性半导体存储装置的电源故障保护电路及使用该方法防止未预期的电源故障的方法
- 专利标题： POWER-FAILURE PROTECTION CIRCUIT FOR NON-VOLATILE SEMICONDUCTOR STORAGE DEVICES AND METHOD FOR PREVENTING UNEXPECTED POWER-FAILURE USING THE SAME
- 专利标题（中）： 用于非易失性半导体存储装置的电源故障保护电路及使用该方法防止未预期的电源故障的方法
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申请号： US12690176申请日： 2010-01-20
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公开(公告)号： US20100226194A1公开(公告)日： 2010-09-09
- 发明人: He Huang
- 申请人： He Huang
- 优先权： CN200720121572.0 20070720
- 主分类号： G11C5/14
- IPC分类号： G11C5/14
摘要：
A power failure protection circuit (10) for a non-volatile semiconductor storage device includes at least an energy storage unit (C1) that serves as a backup power supply for providing backup electrical energy when a power failure occurs. During normal operation of the device, a main control unit (12) is responsible for controlling an external power input to charge the energy storage unit, for dynamically detecting the status of the energy storage unit and for using information about the status to ensure sufficient backup electrical energy for the energy storage unit. During an abnormal operation of the power supply, the main control unit (12) is responsible for discharging the energy storage unit.
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