Fujitsu Corporation

Fujitsu Semiconductor Limited

Yuji Sekido

Hisao Suzuki

Tomoya Kakamu

A first conversion circuit converts a first clock signal based on a signal level of a first voltage into a second clock signal based on a signal level of a second voltage. A flip-flop circuit supplied with the first voltage as an operation voltage latches and outputs a signal, which is based on the signal level of the first voltage, in accordance with the first clock signal. A second conversion circuit supplied with the second voltage as an operation voltage converts a signal level of an input signal, which is based on an output signal of the flip-flop circuit, into the signal level of the second voltage in synchronization with the second clock signal.

Level conversion circuit and semiconductor device

A design system, a program, a program product and a design method which can easily design a semiconductor integrated circuit element having a decoupling capacitor are provided. In an element region which serves as an IC chip, an input/output blockis arranged, and analog-signal-circuit blocksetc. are arranged. In the capacity insertion regionsetc. of an open regionwhich does not belong to the blocks, unit capacity cellsare arranged in a latticed pattern. Analog wiring linesare arranged between the input/output blockand the analog-signal-circuit blocksetc., and the unit capacity cellsof the capacity insertion regionare respectively connected wiring linesandof power source and GND potentials by via-conductorsand. Thereafter, unit cellsare arranged, and wiring linesfor the connections between the unit cells and between the input/output blockand memory blocksetc. are arranged. Further, the unit capacity cellsof the capacity insertion regionsetc. are respectively connected to power source and GND wiring linesandby via-conductors.

Design system of semiconductor integrated circuit element, program, program product, design method of semiconductor integrated circuit element, and semiconductor integrated circuit element

Growing community of inventors

Kasugai, Japan

Yuji Sekido