US 2014/0176185 A1 · PROGRAMMABLE LOGIC DEVICE AND SEMICONDUCTOR DEVICE

Abstract

A programmable logic device having a small layout area even with an increasing circuit scale. The programmable logic device includes first programmable logic elements (PLEs); a second PLE; first wirings to which a signal including configuration data is supplied in a first period and which are electrically connected to respective output terminals of the first PLEs in a second period; a second wiring electrically connected to an input terminal of the second PLE; and circuits each connected to the corresponding first wiring. Each of the circuits includes at least a first switch, a second switch, and a third switch. An on/off state of the second switch depends on a potential of a node to which the signal is supplied from the corresponding first wiring through the first switch. The second switch and the third switch control an electrical connection between the corresponding first wiring and the second wiring.

Claims16

Dependent claims

A programmable logic device comprising:

a driver circuit;
a plurality of first programmable logic elements;
a plurality of first wirings;
a second wiring being electrically connected to an input terminal of a second programmable logic element;
and
a plurality of circuits each comprising at least a switch,
wherein the driver circuit is configured to supply configuration data to one of the plurality of circuits through one of the plurality of first wirings, and
wherein an output terminal of one of the plurality of first programmable logic elements is electrically connected to the second wiring through one of the plurality of first wirings and one of the plurality of circuits in accordance with the configuration data.

5 more elements

A programmable logic device comprising:

a driver circuit;
a plurality of first programmable logic elements;
a plurality of first wirings;
a second wiring being electrically connected to an input terminal of a second programmable logic element;
and
a plurality of circuits each comprising:
a first switch, one terminal of the first switch being electrically connected to one of the plurality of first wirings;
a second switch, one terminal of the second switch being electrically connected to the one of the plurality of first wirings;
and
a third switch, one terminal of the third switch being electrically connected to the other terminal of the second switch, and the other terminal of the third switch being electrically connected to the second wiring,
wherein the driver circuit is configured to supply configuration data to the second switch of one of the plurality of circuits through one of the plurality of first wirings and the first switch of the one of the plurality of circuits,
wherein an output terminal of one of the plurality of first programmable logic elements is electrically connected to the second wiring through one of the plurality of first wirings and the second and third switches of one of the plurality of circuits in accordance with the configuration data,
wherein the first switch comprises a first transistor, and
wherein a channel formation region of the first transistor comprises an oxide semiconductor film.

11 more elements

Dependencies are inferred from the claim text.

Programmable logic device and semiconductor device

Life of this patent

Programmable logic device and semiconductor device

Life of this patent

Abstract

Claims16