Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Having specific delay in producing output waveform
Reexamination Certificate
2008-07-01
2008-07-01
Le, Dinh T. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Having specific delay in producing output waveform
C327S276000, C327S261000
Reexamination Certificate
active
07394302
ABSTRACT:
A semiconductor circuit allows a timing adjustment after detailed routing without rearrangement and rerouting, an adjustment of delay variance due to process variation, and a delay adjustment even after chip formation using a primitive cell with a built-in means for adjusting delay time. The circuit connected between an input pad and an output pad, an operating method for the same, and a delay time control system circuit, which externally adjusts delay time of a plurality of control terminal-equipped/variable capacitance embedded buffers configures a semiconductor circuit. The structure includes: a first buffer connected between the input pad and the output pad; and a plurality of capacitances connectable in parallel between a fixed potential and a current flowing path, which is positioned between the first buffer and the output pad, and that controls connection between each of the plurality of capacitances and the output pad.
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Kabushiki Kaisha Toshiba
Le Dinh T.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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