Patent ID: 6972612

Claim:
A semiconductor device comprising: a first integrated circuit portion for storing data; a second integrated circuit portion that includes functional groups for reading the data stored in the first integrated circuit portion; a chip malfunction setting part structured to generate a first state when the device is defective; a chip malfunction cancellation part structured to generate a second state during a predetermined time in response to a pad input signal to allow bypass of the first state only during the predetermined time, the chip malfunction cancellation part including a fuse having a first terminal connected to a power supply voltage, a first transistor having a source connected to a second terminal of the fuse, and a second transistor having a source connected to a drain of the first transistor, and having a gate and a drain that are commonly connected to a gate of the first transistor; and a functional selecting part that is coupled to the chip malfunction setting part and the chip malfunction cancellation part, that is structured to generate an output signal in response to the first and second states, and that is structured to selectively provide the output signal directly to each of the functional groups in response to the first and second states, wherein a first level of the output signal is generated to disable a normal operation of the semiconductor device and a second level of the output signal is generated to recover a malfunctioned semiconductor device to an enable state during the predetermined time.