Patent ID: 6410936
Filing Date: 2002-06-25
Classification: G01R,H01L

Abstract:
A semiconductor device comprising:a plurality of semiconductor chips formed on a wafer divided by dicing lines; and at least one power supply wiring to supply a power supply voltage formed on each of said dicing lines, wherein each of said semiconductor chips comprises: a power supply voltage leading wiring connected to said power supply wiring; a burn-in mode (BI mode) detection circuit connected to said power supply voltage leading wiring for detecting the supply of the power supply voltage to said power supply wiring, and for generating a control signal and a BI mode detection signal indicating to enter said BI mode when the supply of the power source voltage to said power supply wiring; a self oscillation circuit for oscillating a clock signal having a predetermined frequency during the BI mode based on receiving of a BI mode signal, indicating to enter an operation of a burn-in process, transferred from said BI mode detection circuit; a timing generation circuit for receiving said clock signal and for generating a timing clock signal during said BI mode; a BI mode control circuit for receiving said timing clock signal and for transferring internal control signals to a plurality of internal circuits, incorporated in said semiconductor chip, to be executed under said BI mode; and a power supply circuit connected to said power supply voltage leading wiring for supplying said power supply voltage through said power supply wiring into said oscillation circuit, said timing generation circuit, said BI mode control circuit, and said plurality of internal circuits based on said control signal transferred, from said BI mode detection circuit.