INTERSIL to acquire ROCK SEMICONDUCTOR, a chinese maker of highly integrated power management solutions

Milpitas, CA and Shanghai, China - 15 December, 2009 - Intersil Corporation (NASDAQ Global Select: ISIL), a world leader in the design and manufacture of high-performance analog and mixed-signal semiconductors, today announced that it has signed a definitive agreement to acquire Rock Semiconductor, a privately-held, fabless semiconductor company with technology leadership in highly integrated power management ICs.

Rock Semiconductor provides high-performance analog and mixed-signal integrated circuits for wireless, audio, video and data communications solutions. RockТs products are primarily used in the consumer end market in applications such as cellular phones, personal navigation devices, portable multimedia players and other types of popular consumer electronics products.

"Rock SemiconductorТs products are a perfect fit with IntersilТs rapidly expanding portfolio of power management, audio and communications ICs," said Dave Bell, IntersilТs CEO. "In addition, the acquisition of Rock will immediately give Intersil a greatly expanded presence in the burgeoning local Chinese market."

"We are delighted to join the Intersil team," said Ye Song, General Manager, Rock Semiconductor. "Having access to IntersilТs global network of engineering, manufacturing and marketing resources will accelerate our time-to-market for new products and enable the combined companies to penetrate new markets even faster."

Rock has design centers in Shanghai and Wuhan, China. "Intersil is committed to expanding its business through both organic growth and strategic acquisitions," said Dave Bell. "RockТs team of highly experienced analog and mixed-signal design engineers will immediately increase our design capability and ability to serve hundreds of Chinese and global customers."

About Intersil

Intersil Corporation is a leader in the design and manufacture of high-performance analog and mixed signal semiconductors. The Company's products address some of the industry's fastest growing markets, such as flat panel displays, cell phones, notebooks and other handheld systems. IntersilТs product families address power management functions and analog signal processing functions. Intersil products include ICs for battery management, hot-plug controllers, linear regulators, power sequencers, supervisory ICs, bridge drivers, PWM controllers, switching DC/DC regulators, Zilker Labs Digital Power ICs and power MOSFET drivers; optical storage laser diode drivers; DSL line drivers; D2Audio products; video and high-performance operational amplifiers; high-speed data converters; interface ICs; analog switches and multiplexers; crosspoint switches; voice-over-IP devices; and ICs for military, space and radiation-hardened applications. For more information about Intersil or to find out how to become a member of our winning team, visit the Company's web site and career page at www.intersil.com.