Microsemi Corporation Announces Proposal to Acquire Zarlink Semiconductor, Inc. for CAD $3.35 in Cash, Updates Guidance

Microsemi Corporation Announces Proposal to Acquire Zarlink Semiconductor, Inc. for CAD $3.35 in Cash, Updates Guidance

– Price represents 40% all-cash premium to Zarlink shareholders – Combination would extend Microsemi-s reach into communications and medical markets – Improves competitive position for Zarlink and its products – Immediately accretive to Microsemi-s non-GAAP earnings before synergies – Microsemi is committed to completing compelling transaction for shareholders of both companies – Microsemi updates guidance – Conference call to be held at 8:30 a.m. EDT July 20, 2011