Macronix
Taiwanese integrated device manufacturer specializing in non-volatile memory, including NOR Flash, NAND Flash, and ROM.
Last updated October 14, 2026
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Overview
Macronix International Co., Ltd., commonly known as Macronix or MXIC, is a Taiwanese integrated device manufacturer focused on non-volatile memory. The company develops and manufactures NOR Flash, NAND Flash, and ROM products for consumer electronics, communications, computing, automotive, and networking applications. Its headquarters are in Hsinchu Science Park, one of Taiwan's principal semiconductor centers, and it operates an international sales and support network serving customers across Asia, North America, Europe, and other markets. Established in 1989, Macronix initially built its position in the memory industry through products such as Mask ROM and EPROM. By 1997, it had become a global supplier of those memory types. Over time, the company expanded toward flash memory and developed a business model that connected customer-specific memory designs with higher-volume products suitable for wider market distribution. This approach allowed Macronix to address both specialized applications and standard memory demand. NOR Flash is central to the company's portfolio and is used where systems require reliable code storage, fast read access, long data retention, and support for embedded or connected devices. Macronix also supplies NAND Flash and ROM products, giving it exposure to a range of device architectures and application requirements. Its products have been used in consumer electronics, including memory solutions associated with Nintendo's 3DS and Switch platforms and Samsung wearable products. The company has also developed memory aimed at automotive electronics, communications equipment, networking systems, and industrial applications. Macronix maintains in-house wafer-manufacturing capabilities through two foundries: one supporting 200-nanometer wafers and another supporting 300-nanometer wafers. This manufacturing base is complemented by substantial research and development activity. The company has reported more than 4,000 employees, with approximately one-fifth working in research and development, and more than 9,200 granted patents as of March 2024. These figures reflect a strategy centered not only on manufacturing scale but also on process technology, product specialization, and intellectual property. The company has developed several differentiated memory families. OctaBus flash products are designed to provide high-speed interfaces and have been paired through partnerships with microcontroller manufacturers. In automotive applications, the ArmorFlash and OctaFlash families target demanding requirements for data integrity, security, reliability, and environmental durability. Automotive semiconductor and system companies including Nvidia and NXP have been identified as adopters or users of these memory technologies in vehicle-related systems. Macronix has also pursued lower-power and emerging computing applications. In 2012, it developed a process intended to extend the useful life of solid-state drives. In 2021, it became the first non-volatile-memory manufacturer identified in the reference material to mass-produce 1.2-volt, 120 MHz Serial NOR Flash, supporting devices with stringent power-consumption requirements. In 2022, it introduced a memory-centric computing concept intended to bring more AI-oriented computation into flash-memory devices and received EE Times Asia's Best Memory Product award for the second consecutive year. According to the cited Wikipedia reference, Macronix reported 2023 revenue of approximately US$888 million, with slightly more than half attributed to NOR Flash and roughly one-third to ROM. Because this is a historical company figure, it should be read together with the stated 2023 period rather than treated as a current financial result. Macronix remains an active, publicly listed Taiwanese semiconductor company whose competitive position is built around specialized non-volatile memory, proprietary technology, integrated manufacturing, and long-term relationships with electronics and automotive-system customers.
History
Macronix International Co., Ltd. was established in Taiwan in 1989 and developed as an integrated device manufacturer focused on non-volatile memory. Its early business included Mask ROM and EPROM products, memory technologies widely used for storing fixed or semi-permanent program data. By 1997, Macronix had become a global supplier of Mask ROM and EPROM, giving the company an international customer base and a foundation for later expansion into flash memory. The company's subsequent development was shaped by the transition from highly customized memory components toward flash products that could serve broader markets. Macronix recognized that memory designs created for individual customers could sometimes be adapted into higher-volume, open-market devices. This strategy enabled the company to preserve application-specific expertise while also pursuing products with wider use across consumer electronics, communications, computing, automotive, and networking. NOR Flash became a particularly important part of the portfolio, supplemented by NAND Flash and ROM. Macronix invested in manufacturing and technology capabilities to support this strategy. It operates two in-house wafer-manufacturing foundries, one associated with 200-nanometer wafers and another with 300-nanometer wafers. The company also established sales and support operations in Europe, the United States, Japan, South Korea, Singapore, and China. Its research-oriented profile is reflected in a workforce of more than 4,000 people, approximately one-fifth of whom are engaged in research and development, and in the more than 9,200 patents reported as granted by March 2024. Application expansion has been a recurring theme in Macronix's history. The company developed specialized memory products for consumer electronics and supplied memory used in products associated with Nintendo's 3DS and Switch devices and Samsung wearable electronics. It also pursued partnerships with microcontroller manufacturers so that its OctaBus Flash could be used alongside partner microcontrollers. These relationships helped connect Macronix's memory interfaces and devices with broader embedded-system platforms. Automotive electronics became another important area of specialization. Macronix developed the automotive-oriented ArmorFlash and OctaFlash families for systems requiring dependable, secure, and durable non-volatile storage. The cited reference identifies Nvidia and NXP among automotive-electronics semiconductor or system makers adopting these memory families. The automotive focus reflects the industry's need for memory that can retain software, configuration information, and other data under demanding environmental and operational conditions. The company also continued to pursue improvements in endurance, speed, and power consumption. In 2012, Macronix developed a process intended to extend solid-state-drive life. In 2021, it brought 1.2-volt, 120 MHz Serial NOR Flash into mass production, an achievement described in the reference as a first for a non-volatile-memory manufacturer and one aimed at ultra-low-power device requirements. In 2022, Macronix introduced a memory-centric computing concept designed to support AI-focused computation within flash devices. That same year, it received EE Times Asia's Best Memory Product award for the second consecutive year. The company's 2023 business profile remained centered on non-volatile memory. The cited reference reports approximately US$888 million in total revenue for that year, with slightly more than half generated by NOR Flash and about one-third by ROM. Macronix therefore combines a substantial established-memory business with continuing development of specialized interfaces, automotive products, low-power devices, and emerging memory-computing concepts. It remains an active, publicly listed Taiwanese semiconductor manufacturer with global sales and support operations and a business model built on proprietary technology, integrated wafer production, and application-focused memory products.
- 2024
Patent portfolio exceeded 9,200 granted patents
[1]As of March 2024, Macronix was reported to have more than 9,200 granted patents.
- 2023
Reported revenue mix remained led by NOR Flash
[1]The cited reference reported approximately US$888 million in revenue, with NOR Flash representing slightly more than half and ROM about one-third.
- 2022
Memory-centric computing concept introduced
[1]Macronix introduced a concept aimed at enabling AI-oriented computation within flash-memory devices.
- 2022
Second consecutive EE Times Asia Best Memory Product award
[1]Macronix received the EE Times Asia Best Memory Product award for the second consecutive year.
- 2021
Low-voltage, high-speed Serial NOR Flash entered mass production
[1]Macronix brought 1.2-volt, 120 MHz Serial NOR Flash into mass production, targeting ultra-low-power applications.
- 2012
Solid-state-drive life-extension process
[1]The company developed a process intended to prolong the operating life of solid-state drives.
- 1997
Global supply of Mask ROM and EPROM
[1]Macronix had become a global supplier of Mask ROM and EPROM products.
- 1989
Macronix was established
[1]Macronix International Co., Ltd. was founded in Taiwan and began building its business as a non-volatile-memory manufacturer.
Products and positioning
Specialized non-volatile-memory supplier combining in-house wafer manufacturing, embedded and serial flash expertise, automotive-grade reliability, and application-specific memory technology.
Non-volatile memory
NOR Flash
NOR Flash is Macronix's principal product category and supports code storage, fast read access, firmware, configuration data, and embedded applications. The company supplies serial and other NOR Flash devices across consumer electronics, communications, computing, automotive, and networking markets. Its NOR portfolio also includes low-voltage and application-oriented products intended to balance access speed, data retention, endurance, and power consumption.
Non-volatile memory
NAND Flash
Macronix manufactures NAND Flash as part of its broader non-volatile-memory portfolio. NAND architecture is suited to higher-density data storage and is used in electronic systems that require persistent memory. The cited company description places Macronix NAND Flash across consumer, communication, computing, automotive, and networking applications, although the available reference does not specify individual capacities or product generations.
Read-only memory
ROM
ROM products represent a longstanding part of Macronix's business, extending back to its early Mask ROM activities. These products provide fixed or controlled program storage for electronic systems. ROM remained a material revenue contributor in 2023, accounting for approximately one-third of reported revenue according to the cited reference, although no detailed product-level financial breakdown is provided.
High-speed flash memory
OctaBus Flash
OctaBus Flash is Macronix's high-speed flash-memory family and is designed for systems requiring a broad interface and rapid data access. Macronix has developed partnerships with microcontroller manufacturers to pair OctaBus Flash with their MCU platforms. The family supports the company's strategy of combining proprietary memory interfaces with embedded-system ecosystems and application-specific product designs.
Automotive-grade flash memory
ArmorFlash
ArmorFlash is an automotive-oriented memory family developed for vehicle electronics and other applications requiring enhanced reliability and secure data storage. The reference describes the family as being adopted by automotive-electronics semiconductor and system makers, including Nvidia and NXP. Specific device specifications, launch dates, and individual vehicle programs are not identified in the available material.
Automotive and high-speed flash memory
OctaFlash
OctaFlash is a Macronix flash-memory family associated with high-speed interfaces and automotive applications. It is intended for systems that need dependable non-volatile storage, secure data handling, and performance suitable for modern vehicle electronics. The cited material identifies Nvidia and NXP among companies adopting or using Macronix automotive memory technologies, but does not provide a complete product catalogue.
Legacy non-volatile memory · 1989
Mask ROM and EPROM
Mask ROM and EPROM were among Macronix's foundational product categories. By 1997, the company was described as a global supplier of both types. These products established Macronix's early international presence and technical base before the company broadened its focus toward flash memory and more flexible application-specific non-volatile-memory solutions.
Brand decisions
2022
Introduced memory-centric computingStrategyBackground
AI workloads create pressure to reduce data movement between processing units and memory.
Action taken
Macronix introduced a memory-centric computing concept intended to enable AI-focused computation within flash devices.
Aftermath
The available material describes the concept but does not establish a full commercial rollout or quantified market impact.
2021
Mass production of 1.2-volt, 120 MHz Serial NOR FlashProduct launchBackground
Embedded and connected devices increasingly require flash memory that combines performance with low operating voltage and reduced power consumption.
Action taken
Macronix brought 1.2-volt, 120 MHz Serial NOR Flash into mass production.
Aftermath
The technology contributed to a broader generation of ultra-low-power flash-memory devices, according to the cited reference.
2012
Developed a process to extend solid-state-drive lifeStrategyBackground
Solid-state-drive endurance and useful operating life are important constraints in flash-based storage systems.
Action taken
Macronix developed a process intended to prolong the life of solid-state drives.
Aftermath
The available reference records the development but does not provide quantified commercial results or subsequent product details.
- Expanded customer-specific memory designs into open-market productsStrategy
Background
Macronix identified an opportunity to convert proprietary semiconductor designs developed for individual customers into higher-volume flash-memory products for broader markets.
Action taken
The company used customized flash-memory expertise as a basis for more widely available devices.
Aftermath
This approach supported Macronix's combination of application-specific engineering and standardized market offerings.
Recent events
Reported
Macronix ArmorFlash MX75 receives PSA Certified Level 1 status[3]
Macronix announced that its ArmorFlash MX75 series NOR Flash received PSA Certified Level 1 status at the device level.
Reported
Macronix ArmorFlash MX75 receives PSA Certified Level 1 status[4]
Macronix announced that its ArmorFlash MX75 series NOR Flash received PSA Certified Level 1 status at the device level.
Reported
Foxconn acquires a Macronix chip factory[5]
Foxconn said it had acquired a chip factory from Macronix for NT$2.52 billion (about US$90.8 million).
Reported
Foxconn completed acquisition of Macronix’s six-inch wafer fab[6]
Foxconn completed its acquisition of Macronix’s six-inch wafer fab. Foxconn said it would use the facility to develop and produce third-generation semiconductors, particularly SiC power components for electric vehicles.
Sources7 sources
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