Programmable logic LSI

To decrease a number of cells for programmable wiring means in a programmable logic LSI. An element cell as programmable logic means in the programmable logic LSI comprises a memory circuit, a read-out circuit, and an inter-cell connection control circuit. The element cell unit functions also as programmable wiring means. Further, the input/output connections for a plurality of the element cells are assured by twisting inter-cell connection lines 108. Furthermore, a feed-back loop is formed by connecting input/output signal lines, when the element cell is operating as programmable logic means.