| 摘要 |
PURPOSE:To make a chip size in forming an integrated circuit small by providing a transistor for a load every plural column selecting lines or lines and disposing a decoder for operating a newly selecting FET. CONSTITUTION:Since loading transistors TWR1-TWRi are respectively disposed in common every four pairs of lines R1-R4, R5-R8,...Rm-3-Rm, respectively, the number of the loading transistors can b reduced to 1/4 of the conventional device. To the conventional device, four decoders 90 are newly required to be added. In anususal EPROM, the number of the loading transistors is remarkably large. Therefore, by decreasing the number of the loading transistors, even if four circuits of the decoders 90 are newly added, the number of the loading transistors can be drastically decreased. |
