| 摘要 |
PROBLEM TO BE SOLVED: To obtain a semiconductor memory device capable of performing a read-out operation normally even if an operation frequency of a clock is set in a higher speed without increasing an area and complexing control contents. SOLUTION: A selector circuit 6 outputs one page selection data PSD out of four page selection data PSD (data width one word) based on four kinds of addresses indicated by a burst address BA<1:0> at the time of a normal mode, and outputs one page selection data PSD out of eight page selection data PSD (data width one byte) based on eight kinds of addresses indicated by a burst address BA<1:-1> at the time of a byte mode, An output buffer (part) 7 buffers the page selection data PSD, and outputs outside data DO in which effective bits based on the page selection data PSD is sixteen bits or eight bits under control of a byte signal BYTE. COPYRIGHT: (C)2006,JPO&NCIPI
|
