Patent ID: 8593874
Filing Date: 2013-11-26
Classification: G11C

Abstract:
1. A voltage generation circuit comprising: a first boost circuit configured to output a first voltage in a first operation mode and in a second operation mode; a first output circuit connected to the first boost circuit, the first output circuit being configured to output the first voltage as a second voltage in the first operation mode; a rectifying circuit connected to the first boost circuit, the rectifying circuit being configured to output a third voltage which is lower than the first voltage in the first operation mode; a second output circuit connected to the first boost circuit, the second output circuit being configured to short-circuit the rectifying circuit at a time of the second operation mode and to output the first voltage as a fourth voltage; and a detection circuit configured to detect the second and fourth voltages which are supplied from the first and second output circuits, the first output circuit comprising: a second boost circuit electrically connected to the first boost circuit, the second boost circuit being configured to output a fifth voltage which is higher than the first voltage in the first operation mode; a first transistor configured to output the first voltage as the second voltage, based on the fifth voltage; and a second transistor configured to output the third voltage, based on the fifth voltage, and the second output circuit comprising: a third boost circuit electrically connected to the first boost circuit, the third boost circuit being configured to output a sixth voltage which is higher than the first voltage in the second operation mode; and third and fourth transistors series-connected between both ends of the rectifying circuit, the third and fourth transistors being configured to output the fourth voltage, based on the sixth voltage.