Ding C Mao994 Emma Ct, San Jose, CA 95120
Ding Mao Phones & Addresses
994 Emma Ct, San Jose, CA 95120
4421 Mckavett Dr, Plano, TX 75024 972-6187084
4421 Mckavett Dr, Plano, TX 75024 972-7655857
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Associate degree or higher
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Ding Mao
From Wikipedia, the free encyclopedia. Jump to: navigation, search. Ding Mao (Chinese: ), born 1968 in Sichuan (Chinese: ) Mianyang (Chinese: ), ...
Us Patents
Method Of Achieving Zero Column Leakage After Erase In Flash Eprom
US Patent:
2008008, Apr 10, 2008
Filed:
Jun 30, 2006
Appl. No.:
11/478516
Inventors:
Yuan Tang - San Jose CA, US
Ding Mao - San Jose CA, US
Ding Mao - San Jose CA, US
International Classification:
G11C 16/04
G11C 11/34
G11C 11/34
US Classification:
3651853, 36518524, 36518519
Abstract:
There is provided a method of correcting over-erased memory cells in a flash EPROM memory device so as to achieve zero column leakage after erase. A ground potential is applied to all of the word lines in the memory device. First positive pulse voltages are applied to each bit line on a bit line by bit line basis until the column leakage current in each bit line is reduced to a relatively small value. Thereafter, a positive bias voltage is applied to each word line in a first timed sequence on a word line by word line basis. Second positive pulse voltages are simultaneously applied to each bit line in a second timed sequence on a bit line by bit line basis when the positive bias voltage is being applied to a first word line until the column leakage current in the corresponding bit line is reduced to zero and is then repeated for each subsequent remaining word line.
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