发明名称 |
NICHTFLÜCHTIGER SPEICHER UND VERFAHREN MIT STROMSPARENDEN LESE- UND PROGRAMMVERIFIZIEROPERATIONEN |
摘要 |
<p>A non-volatile memory device capable of reading and writing a large number of memory cells with multiple read/write circuits in parallel has features to reduce power consumption during read, and program/verify operations. A read or program verify operation includes one or more sensing cycles relative to one or more demarcation threshold voltages to determine a memory state. In one aspect, selective memory cells among the group being sensed in parallel have their conduction currents turned off when they are determined to be in a state not relevant to the current sensing cycle. In another aspect, a power-consuming period is minimized by pre-emptively starting any operations that would prolong the period. In a program/verify operation cells not to be programmed have their bit lines charged up in the program phase. Power is saved when a set of these bit lines avoids re-charging at every passing of a program phase.</p> |
申请公布号 |
AT459962(T) |
申请公布日期 |
2010.03.15 |
申请号 |
AT20050747864T |
申请日期 |
2005.05.10 |
申请人 |
SANDISK CORPORATION |
发明人 |
LI, YAN;LEE, SEUNGPIL;CHAN, SIU LUNG |
分类号 |
G11C11/56 |
主分类号 |
G11C11/56 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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