Static information storage and retrieval – Read only systems – Fusible
Reexamination Certificate
2007-01-22
2009-02-17
Hoang, Huan (Department: 2827)
Static information storage and retrieval
Read only systems
Fusible
C365S225700, C365S240000
Reexamination Certificate
active
07492623
ABSTRACT:
An option circuit of a semiconductor chip includes a first option circuit that is set before packaging the semiconductor chip to generate a first option signal; a second option circuit that is set after packaging the semiconductor chip to generate a second option signal; and a selection circuit configured to: select one of the first option signal, the second option signal, and a mode register set signal in response to at least one first control signal; and output a first selected signal as a final option signal. An option method of a semiconductor chip includes setting a first option mode of the semiconductor chip by use of the first option circuit; setting a second option mode of the semiconductor chip by use of the second option circuit; and determining a final option mode of the semiconductor chip by selection of the first option mode or the second option mode.
REFERENCES:
patent: 7173469 (2007-02-01), Rezeanu
patent: 7298639 (2007-11-01), Hsu et al.
patent: 2001/0035536 (2001-11-01), Muller
patent: 2001/0035537 (2001-11-01), Shinozaki
patent: 2004-071099 (2004-03-01), None
patent: 1020050052850 (2005-06-01), None
Harness Dickey & Pierce
Hidalgo Fernando N
Hoang Huan
Samsung Electronics Co,. Ltd.
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