J.C. Patents
Testkey detection circuit
The invention provides a testkey detection circuit, including a plurality of oscillators and a driving circuit. Each of the oscillators has an enable terminal, a voltage terminal and an output terminal, wherein the enable terminals are connected to a common enable terminal. The driving circuit receives the output terminals of the oscillators and increases a driving level of a selected one of the output terminals as a frequency output.
UNITED MICROELECTRONICS CORP.
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Cheng-Yang Chien-Fu Wei-Jen Kun-Yuan Cheng-Tsung Chen-Hsien Zhi-Hong Ruei-Yau Yuan-Hui Yu-Lin
Tsai Chen Wang Wu Ku Hsu Huang Chen Chen Chen