Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Clock or pulse waveform generating
Patent
1996-04-25
1998-10-27
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Clock or pulse waveform generating
327276, 327290, 331 57, G06F 104
Patent
active
058282580
ABSTRACT:
A tester is connected to a signal output terminal provided in a DRAM chip, and a frequency of a clock signal output from an internal timer is monitored. The frequency of the clock signal is varied by changing the combination of 3 bit signals, so as to obtain signals by which the frequency closest to the set value is obtained. A fuse in the internal timer is disconnected to set the frequency of the clock signal so as to obtain the same state as in the case where that signal is applied.
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Halbleiterschaltungstechnik von U. Tietze, Ch. Schenk, Springerverlag, Berlin, 10th Ed., 1993, Chapter 15.2.2.
Asakura Mikio
Hidaka Hideto
Kawagoe Tomoya
Ooishi Tsukasa
Callahan Timothy P.
Mitsubishi Denki & Kabushiki Kaisha
Zweizig Jeffrey
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