Static information storage and retrieval – Read/write circuit – Having fuse element
Reexamination Certificate
2005-11-29
2005-11-29
Phung, Anh (Department: 2824)
Static information storage and retrieval
Read/write circuit
Having fuse element
C365S096000
Reexamination Certificate
active
06970394
ABSTRACT:
A programming method for fuse cells. A core circuit is applied with a first power voltage. The fuse cell includes an electrical fuse element connected to a common node, and a driver device connected between the electrical fuse element and a ground node. The ground node has a ground voltage. The fuse cell has a control gate for controlling current through the electrical fuse element. In program mode, a second power voltage is applied to the common node, a first control voltage is applied to the control gate of a selected fuse cell and a second control voltage is applied to the control gate of an unselected fuse cell. In read mode, the first power voltage is applied to the common node. The second power voltage exceeds the first power voltage. The second control voltage exceeds the ground voltage. The second control voltage is also lower than the first control voltage.
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patent: 6320802 (2001-11-01), Ohbayashi
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patent: 6566730 (2003-05-01), Giust et al.
patent: 6661330 (2003-12-01), Young
Liaw Jhon-Jhy
Wu Shien-Yang
Phung Anh
Thomas Kayden Horstemeyer & Risley
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