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Programmable logic device

  • US 8,581,625 B2
  • Filed: 05/03/2012
  • Issued: 11/12/2013
  • Est. Priority Date: 05/19/2011
  • Status: Expired due to Fees
First Claim
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1. A semiconductor device comprising:

  • a first wiring and a second wiring;

    a logic block electrically connected to the first wiring and the second wiring; and

    a wiring selection circuit provided at an intersection of the first wiring and the second wiring,wherein the wiring selection circuit comprises a switch which comprises a first transistor, a second transistor, and a fourth transistor each comprising a first terminal, a second terminal, and a gate;

    wherein the first terminal and the second terminal of the first transistor are electrically connected to the first wiring and the second wiring, respectively,wherein the second terminal of the second transistor is electrically connected to the gate of the first transistor,wherein the gate of the second transistor is electrically connected to the gate of the fourth transistor, andwherein the second transistor comprises an oxide semiconductor.

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