Patent ID: 8354863
Filing Date: 2013-01-15
Classification: G11C,H03F,H03H

Abstract:
1. A control signal generation circuit, comprising: a first voltage detection unit which generates a first detection signal that is enabled when a level of an external voltage is higher than a level of a first reference voltage; a second voltage detection unit which generates a second detection signal that is enabled when the level of the external voltage is lower than a level of a second reference voltage; and a first control voltage generation unit which outputs a first control voltage selected between a first voltage and a second voltage in response to the first detection signal; a second control voltage generation unit which outputs a second control voltage selected between a third voltage and a fourth voltage in response to the second detection signal; a delay unit which delays a sense amplifier enable signal by a predetermined period in response to voltage levels of the first and second control voltages; and a logic unit which buffers an output signal of the delay unit, and generates a control signal driving a sense amplifier bias voltage with an external voltage, wherein the sense amplifier enable signal is enabled to drive a sense amplifier circuit.