| 摘要 |
PURPOSE:To facilitate the lead-out of wiring from terminals provided with a block as well as to prevent the build-up of the area of an LSI by a method wherein lead-out wires of more than one wire are provided with partial or all elements provided with the block and an imaginary terminal is constituted. CONSTITUTION:The terminal 21 provided with an LSI functional block 20 has been led out the wiring thereof in advance up to a hypothelic terminal 31 by a lead-out wire 32. Accordingly, wirings can be performed up to second layer wirings 27 and first layer wirings 28 using each of through holes 24 leading to terminals 22 and 23 and the hypothelic terminal 31. Each terminal 21, 22 and 23; through holes 24; and wirings are all provided on a wiring lattice 29. In this case, the concentration of the terminals 21, 22 and 23 can be relieved by providing the lead-out wire 32 and the number of rows of the lattice needed in a wiring region 30 can be also made to reduce to two lines. |
