Atmel
Former American semiconductor company known for AVR and ARM microcontrollers, embedded memory, touch technology, and wireless devices; acquired by Microchip Technology in 2016.
Last updated August 26, 2026
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Overview
Atmel Corporation was an American semiconductor designer and manufacturer founded in 1984 by George Perlegos. The company began as a largely fabless memory business, developing lower-power memory products and using external manufacturing partners before building its own production capacity. Its name was derived from “advanced technology for memory and logic,” reflecting the company’s original focus. Atmel became best known for embedded semiconductor products, especially microcontrollers, non-volatile memory, touch controllers, wireless devices, and hardware security components. Its portfolio included 8-bit AVR microcontrollers, 32-bit AVR32 products, ARM-based AT91 and SAM devices, enhanced 8051-compatible microcontrollers, EEPROM and flash memory, radio-frequency components, Wi-Fi and Bluetooth-related products, secure memory, cryptographic authentication chips, sensor hubs, LED drivers, power-management devices, and application-specific products. Devices were offered as standard products, application-specific integrated circuits, or application-specific standard products. The AVR family became Atmel’s most influential product platform. Developed by an Atmel design team in Trondheim, Norway, AVR used an 8-bit Harvard architecture and flash memory. It became widely used in embedded development and formed the hardware foundation of many Arduino boards, helping Atmel gain visibility among students, hobbyists, engineers, and open-hardware developers. Atmel also developed a substantial ARM-based business, beginning with early ARM licensing in the mid-1990s and later expanding into Cortex-based microcontrollers. During the 1990s and 2000s, Atmel broadened its geographic and manufacturing footprint through acquisitions and fabrication investments. It acquired or developed facilities and operations in France, Germany, England, and the United States, while also maintaining design and sales activities across Europe and Asia. The company entered areas including field-programmable logic, smart cards, automotive electronics, touch sensing, wireless connectivity, smart metering, and secure identification. Beginning in the mid-2000s, Atmel pursued a “fab-lite” restructuring strategy. It sold or transferred several fabrication facilities and divested businesses that were not central to its embedded-systems strategy. At the same time, it acquired companies and technologies in capacitive touch, power-line communications, Wi-Fi, and wireless connectivity. The Quantum Research acquisition led to the XSense flexible touch-screen technology, while the Ozmo Devices and Newport Media transactions strengthened Atmel’s wireless and Internet-of-Things capabilities. Atmel remained a significant supplier to consumer, industrial, automotive, communications, medical, aerospace, and military customers. Its products were often designed for applications requiring low power, embedded control, secure authentication, sensing, networking, or specialized environmental qualification. Supporting tools such as Atmel Studio and the Atmel Software Framework helped developers design and program the company’s microcontrollers. The company became the subject of acquisition interest before ultimately being purchased by Microchip Technology. After an earlier unsuccessful takeover attempt involving Microchip and ON Semiconductor, Microchip agreed in 2016 to acquire Atmel. The transaction was completed in July 2016 for approximately US$3.56 billion. Atmel was then absorbed into Microchip Technology, and the standalone Atmel corporate identity was gradually retired, although many product families, development tools, documentation, and technologies continued under Microchip ownership.
History
Atmel was established in 1984 by George Perlegos, a former Intel memory engineer and co-founder of Seeq Technology. It initially operated without its own fabrication plant and contracted wafer production to companies including Sanyo and General Instrument. Its early memory products emphasized low power consumption and attracted customers in the telecommunications and consumer-electronics industries. In 1987, Intel brought a patent-infringement action against Atmel. Rather than continue the dispute on Intel’s terms, Atmel redesigned its products around different intellectual property. The resulting devices reportedly offered improved performance and lower power consumption. Atmel also entered flash memory, a market in which Intel was active, and used venture funding to acquire a Honeywell fabrication facility in Colorado Springs in 1989. It subsequently invested in manufacturing technology and expanded the site. Atmel’s public-company phase began with its 1991 initial public offering. That year it also expanded the Colorado operation after acquiring Concurrent Logic, a field-programmable-gate-array company. In 1994, Atmel entered the microcontroller market with an 8051-based flash microcontroller. Its implementation improved instruction throughput relative to traditional 8051 devices. Atmel also acquired Seeq’s EEPROM assets and expanded its non-volatile-memory business. The company licensed ARM architecture in 1995 and developed the AT91 family, later followed by SAM and Cortex-based solutions. In the same period, it acquired European Silicon Structures, gaining a fabrication facility in Rousset, France, and built additional capacity there. Atmel acquired DREAM in 1996, adding products for digital research in electronic acoustics and music. That year, an Atmel team in Trondheim created the AVR architecture. AVR’s compact 8-bit design, flash programmability, and development accessibility helped make it one of the company’s most recognizable platforms and later made it central to Arduino-based prototyping. Atmel continued expanding through transactions involving semiconductor manufacturing and product technology. Purchases connected to TEMIC and MHS provided facilities in Germany and France. In 2000, the company acquired a Siemens fabrication plant in North Tyneside, England, with support from a UK government grant. These facilities gave Atmel greater control over production but also increased fixed costs and operational complexity. From 2005 onward, Atmel pursued a fab-lite strategy. It sold or transferred several manufacturing sites, including the Nantes facility, the North Tyneside operation, the German fab, and the French fab. It also divested the secure microcontroller smart-card business, the DREAM business, and eventually the DataFlash product line. The program was intended to reduce manufacturing exposure and concentrate resources on embedded systems, microcontrollers, touch, connectivity, and security. Atmel simultaneously added technologies in growth markets. Its 2008 acquisition of Quantum Research expanded capacitive-touch capabilities and contributed to the later XSense flexible touch-screen line. Atmel acquired Ozmo Devices in 2012 for wireless technology associated with Wi-Fi Direct and bought smart-metering product lines from IDT in 2013. The 2014 Newport Media acquisition further developed wireless capabilities, including Bluetooth- and Wi-Fi-related products. By the 2010s, Atmel’s portfolio covered microcontrollers, ARM processors, memory, wireless connectivity, touch interfaces, security chips, sensors, automotive electronics, analog devices, smart-energy components, and custom integrated circuits. The company served a broad set of end markets and supported developers with Atmel Studio and software frameworks. Its AVR products were especially prominent in education, prototyping, and open hardware, while its ARM and automotive products addressed more demanding embedded applications. Atmel attracted takeover interest in 2008 when Microchip and ON Semiconductor made an unsolicited offer that the company rejected. Other potential buyers, including Cypress Semiconductor and Dialog Semiconductor, were reported to have shown interest in 2015. In 2016, Microchip reached an agreement to acquire Atmel. The transaction closed in July for approximately US$3.56 billion, after which Atmel was absorbed into Microchip Technology. The Atmel corporate brand was phased out, although Microchip continued supporting and incorporating many Atmel-originated technologies and product families.
- 2016
Microchip acquisition completed
[1]Microchip Technology completes its acquisition of Atmel, ending Atmel’s existence as an independent company.
- 2014
Newport Media acquired
[1]The transaction strengthens Atmel’s wireless product capabilities.
- 2013
Smart-metering product lines acquired from IDT
[1]Atmel adds smart-energy and metering products to its embedded portfolio.
- 2012
XSense flexible touch product released
[1]Atmel introduces a flexible touch-screen technology based on copper-mesh electrodes.
- 2012
Ozmo Devices acquired
[1]Atmel expands its wireless and Internet-of-Things capabilities through the acquisition of Ozmo Devices.
- 2008
Quantum Research acquired
[1]The acquisition adds capacitive-touch technology and supports Atmel’s expansion into touch interfaces.
- 2005
Fab-lite restructuring begins
[1]Atmel starts reducing its owned manufacturing footprint and concentrating on selected semiconductor businesses.
- 2000
North Tyneside facility acquired
[1]Atmel acquires a Siemens fabrication plant in England, supported by a UK government grant.
- 1996
AVR development begins
[1]An Atmel team in Trondheim develops the AVR RISC microcontroller architecture, which later becomes a major embedded and Arduino platform.
- 1995
ARM licensing and European expansion
[1]Atmel becomes an early ARM licensee and acquires European Silicon Structures, adding a fabrication site in Rousset, France.
Products and positioning
Embedded semiconductor solutions centered on microcontrollers, low-power control, memory, connectivity, touch sensing, and hardware security.
Microcontrollers · 1996
AVR microcontrollers
Atmel’s AVR family consisted primarily of 8-bit RISC microcontrollers using flash memory and a Harvard-style architecture. AVR devices were used in consumer products, industrial controls, instruments, educational projects, and development boards. Their accessible programming model and broad tool support helped make them especially influential in prototyping and open-hardware communities. Arduino boards based on AVR devices significantly increased the platform’s recognition outside traditional semiconductor engineering.
ARM-based microcontrollers · 1995
AT91 and SAM families
The AT91 and SAM lines represented Atmel’s ARM-based embedded-computing portfolio. They provided higher processing capability than the company’s 8-bit products and were aimed at industrial, communications, consumer, and other embedded applications. Later products extended the range into Cortex-based architectures, including low-power microcontrollers suitable for connected and battery-operated devices.
Microcontrollers · 1994
8051-compatible microcontrollers
Atmel produced flash-based microcontrollers compatible with the Intel 8051 architecture. The company differentiated some of these devices through faster instruction execution, with designs capable of completing operations in fewer clock cycles than traditional 8051 implementations. They served customers seeking established 8051 software and architecture compatibility with more modern flash-based development.
Non-volatile memory · 1984
EEPROM, EPROM, and DataFlash
Memory was Atmel’s original business area. Its portfolio included serial and parallel EEPROM, one-time-programmable EPROM, and DataFlash serial-interface flash memory. These products were used for configuration storage, firmware, identification data, and embedded system memory. Atmel later sold the DataFlash line to Adesto Technologies as part of its portfolio rationalization.
Security semiconductors
CryptoMemory and CryptoAuthentication
Atmel’s security portfolio included protected memory and authentication devices using symmetric and asymmetric cryptographic techniques. CryptoMemory products added security functions to EEPROM, while CryptoAuthentication devices supported hardware-based authentication for access control, communications, embedded equipment, and anti-counterfeit applications such as approved batteries or consumables.
Touch sensors · 2012
XSense
XSense was Atmel’s flexible touch-screen technology, using copper-mesh electrodes to create flexible sensor structures. It complemented Atmel’s touch-controller integrated circuits, which supported buttons, sliders, wheels, and larger touch interfaces. The product line reflected the company’s effort to participate in both touch-controller silicon and touch-sensor materials.
Wireless semiconductors
Wireless connectivity products
Atmel offered radio-frequency transceivers, Wi-Fi devices, wireless modules, and related connectivity products for embedded and Internet-of-Things applications. Products obtained or developed through Ozmo Devices and Newport Media included Wi-Fi and other wireless capabilities. The portfolio also covered regional sub-gigahertz bands, 2.4 GHz devices, RFID, remote-control applications, and modules such as Zigbit.
Application-specific semiconductors
Automotive and smart-energy semiconductors
Atmel adapted microcontrollers, memory, networking, touch, radio, battery-management, and driver products for automotive use, including CAN, VAN, and LIN networking and wider-temperature applications. Its smart-energy portfolio combined processors, security, power-line communications, analog front ends, and metering functions for electricity measurement and smart-grid equipment.
Brand decisions
2016
Agree to acquisition by Microchip TechnologyM&ABackground
After earlier acquisition interest from other semiconductor companies, Microchip and Atmel negotiated a transaction intended to combine two major embedded-semiconductor portfolios.
Action taken
Atmel agreed to be acquired by Microchip Technology, with the merger completed in July 2016.
Aftermath
Atmel ceased operating as an independent company. Its technologies, product families, and customer support were incorporated into Microchip.
Acquisition consideration. Approximately US$3.56 billion (Transaction completed July 2016)
2008
Reject unsolicited Microchip and ON Semiconductor offerM&ABackground
Microchip Technology and ON Semiconductor proposed acquiring Atmel in an unsolicited transaction estimated at approximately US$2.3 billion.
Action taken
Atmel rejected the approach, and the attempted hostile takeover was abandoned.
Aftermath
Atmel remained independent for several more years before eventually agreeing to be acquired by Microchip.
2005
Adopt a fab-lite operating strategyStrategyBackground
Atmel sought to reduce the cost and complexity associated with owning a large network of semiconductor fabrication facilities.
Action taken
The company began selling or transferring fabs and concentrating more heavily on product design, embedded systems, microcontrollers, touch, connectivity, and security.
Aftermath
The program led to multiple facility and business divestitures while Atmel continued to acquire technologies in touch and wireless markets.
Recent events
- 2016
Microchip Technology agrees to acquire Atmel[1]
M&A
Microchip agreed to purchase Atmel in a transaction valued at approximately US$3.6 billion. The deal followed earlier acquisition interest from other semiconductor companies.
- 2016
Atmel merges into Microchip Technology[1]
M&A · Other
The acquisition was completed in July 2016 for approximately US$3.56 billion, ending Atmel as an independent company.
- 2014
Atmel acquires Newport Media[1]
M&A
The transaction added wireless capabilities, including technology relevant to Bluetooth and Wi-Fi applications.
- 2013
Atmel acquires smart-metering product lines from IDT[1]
M&A
The acquisition strengthened Atmel’s smart-energy and metering portfolio, including products combining embedded processing, security, communications, and measurement functions.
- 2012
Atmel introduces XSense flexible touch technology[1]
Product launch
Atmel released XSense, a flexible touch-screen technology based on copper-mesh electrodes, following development work associated with Quantum Research.
- 2012
Atmel acquires Ozmo Devices[1]
M&A
The transaction expanded Atmel’s wireless portfolio with technology associated with Wi-Fi Direct and low-power connectivity.
- 2012
Atmel sells DataFlash product line to Adesto Technologies[1]
M&A
Atmel divested its DataFlash serial-interface flash-memory products as part of its portfolio-streamlining program.
- 2008
Atmel receives unsolicited acquisition approach from Microchip and ON Semiconductor[1]
M&A
Microchip Technology and ON Semiconductor made an unsolicited proposal valued at approximately US$2.3 billion. Atmel rejected the approach, and the attempted takeover did not proceed.
- 2008
Atmel acquires Quantum Research Group[1]
M&A
The acquisition added capacitive-touch sensing technology and expanded Atmel’s position in touch interfaces and embedded sensing.
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