Method and apparatus for refreshing a dynamic random access memory

摘要

A mode control circuit receives a row address strobe signal and a column address strobe signal and generates a normal mode signal when the row address strobe signal is received before the column address strobe signal is received. The mode control circuit generates a refresh mode signal when the row address strobe signal is received not before the column address strobe signal is received. A row addressing circuit addresses a first number of rows of data in response to the normal mode signal and a second, greater number of rows of data in response to the refresh mode signal.