Patent ID: 8205105
Filing Date: 2012-06-19
Classification: H01L,H05K

Abstract:
1. An electronic device comprising: a wiring substrate including a first power-supply wiring to which a first power-supply potential is applied, and a second power-supply wiring to which a second power-supply potential is applied, a microcomputer including a first power-supply terminal connected with the first power-supply wiring, and a second power-supply terminal connected with the second power-supply terminal; a connector connected with the first and second power-supply wirings; and a bypass capacitor including a first electrode electrically connected with the first power-supply wiring, and a second electrode electrically connected with the second power-supply wiring; wherein a length of the first power-supply wiring from the first power-supply terminal of the microcomputer to the connector is different from a length of the second power-supply wiring from the second power-supply terminal of the microcomputer to the connector; wherein an inductor element is connected in series to one of the first and second power-supply wirings having the length from the microcomputer to the connector which is smaller than another; wherein the inductor element is connected in between the microcomputer and the bypass capacitor; and wherein in between the microcomputer and the inductor element, a bypass capacitor for preventing a noise is not connected in parallel to the first and second power-supply wirings.