| 摘要 |
PURPOSE:To shunt a high-frequency component overlapping to a power supply, and to relax supply noises by forming a plurality of supply wirings for feeding the power supply and a plurality of supply wirings feeding potential different from said wirings to each of circuit units constituting an IC while they are crossed at right angles with mutually different layers and setting capacitors up to these crossed sections. CONSTITUTION:One cell Aij is constituted of a region surrounded by a chain line and the cells are arranged on a chip in a matrix shape, the power supply is extended up to a pectinate electrode wiring 6 shown in a solid line and a pectinate electrode wiring 7 shown in a broken line from pads 4 and 5, and all cells are supplied with the power supply. The supply wirings 6 and 7 among them are mutually insulated previously by inter-layer insulating films, and each cell is supplied with power supplies at different potential. In the constitution, the capacitors are set up to all of the crossed sections of the wirings 6 and 7, the high-frequency components of supply noises are shunted into the chip, and the generation of the logic malfunction of the cells is prevented. |
