METHOD FOR CONTROLLING INTERNAL POWER OF OUTPUT BUFFER

摘要

PURPOSE: A method for controlling internal power of an output buffer is provided to prevent a delay phenomenon by maintaining a voltage level of a precharge node over an internal supply voltage level after a row active state. CONSTITUTION: In the device, enable signal for internal supply voltage generator is generated in a read operation by using enable signal for a data output buffer and a row active signal. A precharge node of a data output buffer is precharged to an internal supply voltage level at a sensing start point by a data output buffer precharge signal. An internal supply voltage is generated from an internal supply voltage generator by enable signal for the internal supply voltage generator. An internal charge circuit of a data output buffer is operated by enable signal for using the data output buffer. The process for generating the internal supply voltage is finished by using a precharge or an automatic pulse.