| 摘要 |
PURPOSE:To reduce the unidirectional size of a chip by forming wirings for controlling a Y decoder of a material which is different from that for forming a cell when forming X-, Y-drivers parallel to each other to select a specific bit in a memory array made of X, Y matrix, and passing through the array. CONSTITUTION:A memory array AR which is formed of X, Y matrix is formed on a chip CHIP, a power source voltage VCC, and VSS are applied thereto, and timing signals are respectively applied from timing generators TMG1, TMG2. Then, X decoders X0-X3 and Y decoders Y0-Y3 of matrix shape parallel to each other in the array AR are provided, and switches SW0-SW3 are respectively connected to the decoders X0-X3, and the switches are selectively driven by Y driver DRV. In this structure, the wirings YC0-YC3 of the Y driver DRV are formed of a material different from that of the AR, and the size of the width of the CHIP can be reduced without any replacement in the passage in the AR. |
