Programmable logic circuit and nonvolatile FPGA

摘要

A programmable logic circuit includes: first to third wiring lines, the second wiring lines intersecting with the first wiring lines; and cells provided in intersecting areas, at least one of cells including a first transistor and a programmable device with a first and second terminals, the first terminal connecting to one of a source and a drain of the first transistor, the second terminal being connected to one of the second wiring lines, the other of the source and the drain being connected to one of the first wiring lines, and a gate of the first transistor being connected to one of the third wiring lines. One of source and drain of each of the first cut-off transistors is connected to the one of the second wiring lines, and an input terminal of each of first CMOS inverters is connected to the other of the source and the drain.

主权项

1. A programmable logic circuit comprising:
a plurality of first wiring lines; a plurality of second wiring lines intersecting with the first wiring lines in intersecting areas; a plurality of cells disposed in the intersecting areas, at least one of the cells including a programmable device with a first terminal and a second terminal, the first terminal of the programmable device being connected to one of the first wiring lines, and the second terminal being connected to one of the second wiring lines; a plurality of first cut-off transistors each including a source and a drain, one of the source and the drain being connected to the one of the second wiring lines; and a plurality of first CMOS inverters each corresponding to one of the first cut-off transistors, each of the first CMOS inverters including an input terminal, the input terminal being connected to the other of the source and the drain of the corresponding one of the first cut-off transistors, wherein at most one of the programmable devices connected to one of the second wiring lines is programmed.