Patent ID: 7564265
Filing Date: 2009-07-21
Classification: G01R

Abstract:
1. A semiconductor device comprising: first logics operating with a first power supply voltage supplied from a power supply voltage terminal; a voltage regulator for generating a second power supply voltage based on the first power supply voltage, the second power supply voltage being different from the first power supply voltage; second logics operating with the second power supply voltage; a test power supply voltage terminal for supplying said second logics with a test power supply voltage, which is higher or lower than the second power supply voltage; a register for outputting a power-down signal to halt an operation of said voltage regulator; a reset terminal supplied with a reset signal to set said first logics, said second logics and said register in respective initial states; and a test reset terminal supplied with a test reset signal which causes said first logics and said second logics to be set to respective initial states as setting of an initial state of said register is canceled.