| 摘要 |
PURPOSE: An auto refresh control circuit is provided to perform a refresh operation from a desired area by designating an address, inputted together with an auto refresh command having a specific bank address, as a start address of an internal refresh counter. CONSTITUTION: An auto refresh control circuit comprises a command decoder(110) for generating an AREFP signal having auto refresh command information according to an external command. An X-ADDRESS generator(114) generates an X ADDRESS signal in order to control refresh of a desired part according to an auto refresh signal generated from the command decoder. A counter controller(118) confirms the auto refresh command having an external address. An auto refresh operation is performed in a bank(116). |
