Renesas Electronics

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Renesas Electronics Corporation
Native name
ルネサス エレクトロニクス株式会社
TypePublic (KK)
TYO: 6723
PredecessorNEC Electronics, Renesas Technology (chip units of Hitachi and Mitsubishi)
FoundedNovember 1, 2002; 19 years ago (2002-11-01) as Renesas Technology
April 1, 2010; 11 years ago (2010-04-01) as Renesas Electronics
Key people
Hidetoshi Shibata (Representative Director, President and CEO)
Tetsuya Tsurumaru (Representative Director and Chairman)[1]
Number of employees
19,546 (Consolidated, as of December 31, 2018)[2]

Renesas Electronics Corporation (ルネサス エレクトロニクス株式会社, Runesasu Erekutoronikusu Kabushiki Gaisha) is a Japanese semiconductor manufacturer headquartered in Tokyo, Japan, initially incorporated in 2002 as Renesas Technology, the consolidated entity of the semiconductor units of Hitachi and Mitsubishi excluding their dynamic random-access memory businesses,[3] to which NEC Electronics merged in 2010, resulting in a minor change in the corporate name and logo to as it is now.[4]

In the 2000s to early 2010s, Renesas had been one of the six largest semiconductor companies in the world.[5] As of 2014, it was the world's largest automotive semiconductor maker,[6] and the world's largest maker of microcontrollers. The company also has presences in the markets of analogue and mixed-signal integrated circuits, memory devices, and SoCs.

The brand Renesas is a contraction of "Renaissance Semiconductor for Advanced Solutions".[3]


Renesas Electronics started operation in April 2010, through the integration of NEC Electronics, established in November 2002 as a spin-off of the semiconductor operations of NEC with the exception of the DRAM business,[7][8] and Renesas Technology established on April 1, 2003, the non-DRAM chip joint venture of Hitachi and Mitsubishi, with their ownership percentage of 55 and 45 in order.[9] The DRAM businesses of the three had become part of Elpida Memory, which went bankrupt in 2012 before being acquired by Micron Technology.[10]

A basic agreement to merge was reached by April 2010 and materialized on the first day, forming the fourth largest semiconductor company by revenue according to an estimation from iSuppli.[11]

In December 2010, Renesas Mobile Corporation (RMC) was created by integrating the Mobile Multimedia Business Unit of Renesas with the acquired Nokia Wireless Modem Business Unit.[12]

In 2011, Renesas Electronics was adversely affected by the 2011 Tōhoku earthquake and tsunami[13] and flooding in Thailand. In 2012, the company, which had about 50 thousand employees of manufacturing, design and sales operations in about 20 countries in 2011,[14] decided to restructure its business, including the sale and consolidation of its Japanese domestic plants, to become profitable.[15][16] In December 2012, INCJ, a Japanese public-private fund, and several key clients decided to invest in the company.[citation needed] Through the investment, Renesas aimed to secure 150 billion yen as fresh capital by September 2013 and make use of it for investment in development of the microcontroller and analog and power chips for automotive and industrial uses, plant improvements, and corporate acquisitions.[citation needed]

In January 2013, Renesas transferred some of its back-end plants to J-Devices.[17]

In September 2013, Broadcom acquired most of Renesas Mobile Communication.[18]

With the allotment of third-party shares to the nine investors completed in September 2013, INCJ became the largest shareholder in the company.[19] Renesas announced its new business direction and issued its corporate presentation titled "Reforming Renesas” in October 2013.[20]

In the fiscal year ended in March 2014, Renesas recorded its first ever net profit since it started operation as Renesas Electronics Corporation in 2010.[21]

Renesas Silicon Valley offices in San Jose, California.

In July 2014, the subsidiary Renesas Mobile Communication was consolidated, after the company had decided to withdraw from the 4G wireless business.[22]

In September 2014, the sale of the display driver IC unit of Renesas to Synaptics was completed.[23]

In September 2016, Renesas announced that it would acquire Intersil for $3.2 billion.[24] In February 2017, Renesas completed the acquisition.[25]

In April 2017, Renesas unveiled a self-driving concept car at a global developer conference, stating that it will start delivering a new line of products for self-driving cars in December 2017, as it takes on global giants such as Intel. The new technology acts as an onboard nerve center, coordinating and controlling vehicle functions.[26]

In September 2018, Renesas announced that it has agreed to buy Integrated Device Technology for $6.7 billion.[27] The acquisition was completed in March 2019.[28]

In 2020, Renesas announced its plans to wind down its production of diodes and the compound device.[29]

In February 2021, Renesas announced that it has agreed to buy Dialog Semiconductor for $5.9 billion.[30] The acquisition was completed in September 2021.[31]

In March 2021, a fire at a factory owned by a subsidiary of Renesas caused significant damage to equipment.[32] Renesas said that it would take at least a month to restart the damaged operations.[32]


The offerings of Renesas Electronics include:


The RX MCU family[edit]

The RX, an acronym for Renesas Xtreme, is the family name for a range of 32-bit microcontrollers developed by Renesas, as opposed to the H family and the MC family, launched by Hitachi and Mitsubishi respectively.[35][36]

The RX family was launched in 2009 by Renesas Technology with the first product range designated the RX600 series and targeting applications such as metering, motor control, human–machine interfaces (HMI), networking, and industrial automation. Since 2009 this MCU family range has been enlarged with a smaller variant the RX200 series and also through enhanced performance versions.

Key to the high performance of the microcontroller is the CISC architecture with high performance integrated flash memory enabling the central processing unit (CPU) to operate at very high frequency, 100 MHz, without requiring wait-states for the memory accesses resulting in performance up to 1.65 DMIPS/MHz.

The RA MCU family[edit]

The RA, an acronym for Renesas Advanced, is the family name for a range of 32-bit microcontrollers with Arm Cortex processor cores. The RA family's key features are the stronger embedded security, high-performance, and CoreMark ultra-low power operation. It also has a comprehensive partner ecosystem and Flexible Software Package[37] for the users.

MCU Family Specifications
Family CPU Operating Frequency Program Memory (KB) Data Flash (KB) RAM (KB) Lead Count Supply Voltage







32, 64, 128, 256, 384, 512,

768, 1024, 2048

4, 8, 32, 63 16, 32, 64, 96, 128

256, 384, 640

25, 32, 36, 40, 48

56, 64, 80, 100

144, 145 176

1.6 - 5.5

1.8 - 3.6

2.7 - 3.6

2.7 - 3.7


The RZ Arm-based 32 & 64-bit family[edit]

The Renesas RZ family is a high-end 32 & 64 bit microprocessors that is designed for the implementations of high resolution human machine interface (HMI), embedded vision, embedded artificial intelligence (e-AI), real-time control, and industrial ethernet connectivity.[38] It supports 6 protocols: PROFINET, EtherNET/IP, POWERLINK, Modbus/TCP, EtherCAT, and Sercos III.

The family includes, RZ/A and RZ/G for HMI, RZ/T for high-speed real-time control, and RZ/N for the network.[38]

MPU Family Specifications
Family BIt Size RAM (KB) CPU Lead Count (#) Supply Voltage Max Operating Frequency (Mhz)
RZ 32


128 ~ 10240 Cortex-A15










112, 176, 196

208, 233, 256, 272,

320, 324, 361, 400,

456, 501, 551, 552,

831, 841, 1022

3 - 3.6 125 ~ 1500

Corporate affairs[edit]

The largest stockholders and their ownership ratio of Renesas are as follows as of December 31, 2018.[39][40][41]

Innovation Network Corporation of Japan 33.37%
GIC Private Limited -C 5.79%
Denso 4.99%
Mitsubishi Electric 4.53%
Japan Trustee Services Bank

(Re-trust of Sumitomo Mitsui Trust Bank, Limited /

NEC Corporation pension and severance payments Trust Account)


At the end of September 2013, Renesas issued new shares through third-party allotment resulting in INCJ becoming the new largest shareholder and non-parental controlling shareholder.[42]

In early May 2012, NEC transferred part of its stake in Renesas to its employee pension trust. As a result, the NEC pension fund held 32.4 percent of Renesas while NEC had 3.0 percent.[43]

Manufacturing sites[edit]

As of 2021, the in-house wafer fabrication of the semiconductor device is conducted by Renesas Semiconductor Manufacturing, a wholly owned subsidiary operating six front-end plants in the following areas:[44]

  • Naka, Takasaki, Shiga, Saijo, Yamaguchi, Kawashiri

The back-end facilities, directly affiliated to Renesas Electronics, are located in:[44]

  • Yonezawa, Oita, Nishiki


  1. ^ "Executive Team". Renesas Electronics Corporation. Jun 2013. Retrieved 1 July 2013.
  2. ^ "Company profile". Renesas Electronics Corporation. March 2016. Retrieved 2016-11-02.
  3. ^ a b "Hitachi and Mitsubishi Combine to form Renesas Technology, the World's Largest Microcontroller Company!". Apr 1, 2003. Retrieved 2021-01-16.
  4. ^ "NEC Electronics and Renesas agree on merger". The Financial Times.
  5. ^ Editor, Editor: Staff. "Evertiq - Top25: Semiconductor suppliers in 2010". Retrieved 2021-01-17.CS1 maint: extra text: authors list (link)
  6. ^ Lee, Se Young. "Better late than never? Samsung IT arms push into autos". Reuters. Retrieved 10 December 2015.
  7. ^ "NEC Spinoff Starts Well As Its Stock Increases 29%". The New York Times. Bloomberg News. 25 July 2003.
  8. ^ "NEC spins off semiconductor operations". EETimes.
  9. ^ "Hitachi, Mitsubishi sign to merge chip units in Renesas venture". EETimes.
  10. ^ Sutherland, Ed (2012-07-02). "Micron acquires bankrupt Elpida Memory for $2.5 billion". Reuters. Retrieved 2021-01-18.
  11. ^ "Renesas Electronics is biggest 'non-memory' chip firm". Electronics Weekly. 2 April 2010.
  12. ^ Ricker, Thomas. "Nokia sells wireless modem business to Renesas in bid to refocus". Engadget. Retrieved 11 December 2015.
  13. ^ “Quake-hit Renesas plant restarts production” June 5, 2011 The Daily Yomiuri
  14. ^ "Renesas Electronics Corporation Commences Operations". Renesas Electronics Corporation. 1 April 2010. Retrieved 21 April 2011.
  15. ^ Saito, Mari. "Japan's Renesas seeks to cut 12 percent of workforce". Retrieved 30 March 2018.
  16. ^ Editorial, Reuters. "Renesas aims to complete restructuring in 3 years". Retrieved 30 March 2018.
  17. ^ "Renesas Electronics Reaches a Definitive Agreement to Transfer its Subsidiaries' Back-End Facilities and Others to J-Devices | Renesas". Retrieved 2021-02-05.
  18. ^ "Broadcom aqcuires Renesas Mobile Europe". Helsinki Business Hub. 5 September 2013. Retrieved 5 February 2015.
  19. ^ "Renesas Electronics Announces Partial Correction and Update on "Renesas Electronics Announces Share Issue through Third-Party Allotment, and Change in Major Shareholders, Largest Shareholder who is a Major Shareholder, Parent Company and Other Related Companies"". Renesas Electronics. Retrieved 2017-02-25.
  20. ^ "Renesas Electronics Issues New Business Direction Presentation "Reforming Renesas"". Renesas Electronics. 2013-10-30. Retrieved 2017-02-23.
  21. ^ "Financial Highlights". Retrieved 2017-02-28.
  22. ^ "Renesas Electronics Announces Absorption-Type Merger (Simplified/Short-Form Merger) with Consolidated Subsidiary and Debt Waiver". Renesas Electronics. 2014-07-28. Retrieved 2019-07-27.
  23. ^ "Synaptics Closes Acquisition of Renesas SP Drivers". Synaptics. 2015-12-21. Retrieved 2021-02-05.
  24. ^ "Renesas to Acquire Intersil to Create the World's Leading Embedded Solution Provider". Renesas Electronics. 2016-09-13. Retrieved 2017-02-23.
  25. ^ "Renesas Electronics Completes Acquisition of Intersil". Renesas Electronics. 2017-02-25. Retrieved 2017-02-25.
  26. ^ Hans Greimel, Automotive News. “Renesas takes on global giants in growing autonomous vehicle market.” June 19, 2017. June 23, 2017.
  27. ^ "Renesas in $6.7 billion deal for IDT". Reuters. 2018-09-11. Retrieved 2018-09-11.
  28. ^ "Renesas Completes Acquisition of Integrated Device Technology". Renesas Electronics. 2019-03-30. Retrieved 2019-04-03.
  29. ^ "Renesas Electronics to Withdraw from LD/PD Business and Close Production | Renesas". Retrieved 2021-02-05.
  30. ^ Tim Kelly, Douglas Busvine (2021-02-07). "Renesas in $6.0 billion deal for Dialog".
  31. ^ "Renesas Completes the Acquisition of Dialog Semiconductor". everything PE. 2021-09-02.
  32. ^ a b Jie, Yang (2021-03-22). "Renesas Chip-Plant Fire Spreads Concerns About Global Auto Production". Wall Street Journal. ISSN 0099-9660. Retrieved 2021-03-22.
  33. ^ New RZ Family Debuts: Powerful processors built around an Arm CPU
  34. ^ Renesas Electronics and Renesas Mobile License ARM Processor IP for Next Generation Communications Processors and Application Processors
  35. ^ "Commemorating on the Growth of Renesas 32-Bit RX Family on its 10th Anniversary | Renesas". Retrieved 2021-01-17.
  36. ^ "Renesas (Mitsubishi, Hitachi) Microcontroller Development Tools". Retrieved 2021-01-17.
  37. ^ "Flexible Software Package (FSP) | Renesas". Retrieved 2021-01-28.
  38. ^ a b "RZ Arm-based High-end 32 & 64-bit MPUs | Renesas". Retrieved 2021-01-28.
  39. ^ "Distributions of Shareholders and Shares". Renesas Electronics Corporation. 3 April 2019.
  40. ^ "Renesas Electronics Announces Change in Controlling Shareholder Other Than Parent Company".
  41. ^ "Japan's state-backed fund INCJ, others to trim stake worth $3b in Renesas".
  42. ^ "Renesas Electronics Announces Partial Correction and Update on "Renesas Electronics Announces Share Issue through Third-Party Allotment, and Change in Major Shareholders, Largest Shareholder who is a Major Shareholder, Parent Company and Other Related Companies"". Renesas Electronics Corporation. September 30, 2013. Archived from the original on December 3, 2013.
  43. ^ Mari Saito and Ayai Tomisawa (May 22, 2012). "Japan's Renesas to cut 6,000 jobs, raise capital". Reuters.
  44. ^ a b "Renesas Semiconductor Manufacturing Co., Ltd. | Renesas". Retrieved 2021-01-18.

External links[edit]