Patent ID: 8093918
Filing Date: 2012-01-10
Classification: G01R,G11C,H01L,Y10T

Abstract:
1. An electronic device comprising: an actual operation circuit that operates during an actual operation of the electronic device; a second test circuit and a third test circuit that operate during a test of the electronic device wherein the second test circuit includes: a selecting section that sequentially turns on each of the plurality of test elements, during the test of the electronic device; a power supply section that includes a first power supply line and a second power supply line separately provided from the first power supply line, the first power supply line for applying power supply voltages to the actual operation circuit and the third test circuit and the second power supply line for applying a power supply voltage to the second test circuit, wherein the power supply section (i), during the actual operation of the electronic device, does not apply a power supply voltage to the second test circuit and applies power supply voltages to the actual operation circuit and the third test circuit via the first power supply line, and (ii) to obtain identification of the electronic device, applies a power supply voltage to the second test circuit via the second power supply line; and an identification information output section that outputs a terminal voltage of the each test element which is sequentially turned on by the selecting section, as identification information of the electronic device.