Method and apparatus for controlling refresh cycles of a plural cycle refresh scheme in a dynamic memory

摘要

According to the present invention, refresh operation of a device employing a plural refresh cycle scheme is controlled. The refresh scheme employed by the device performs a plurality of refresh cycles of a predetermined quantity in response to a command initiating a refresh operation to maintain data storage. The present invention includes a mode generator that supplies information relating to a desired quantity of refresh cycles to be performed in response to the refresh initiating command and a refresh enable unit that controls the device to perform the desired quantity of refresh cycles within the refresh scheme in response to the refresh initiating command.