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, to which NEC Electronics merged in 2010, resulting in a minor change in the corporate name and logo to as it is now.
|Predecessor||NEC Electronics, Renesas Technology (chip units of Hitachi and Mitsubishi)|
|Founded||November 1, 2002 as Renesas Technology|
April 1, 2010 as Renesas Electronics
|Hidetoshi Shibata (Representative Director, President and CEO) |
Tetsuya Tsurumaru (Representative Director and Chairman)
Number of employees
|19,546 (Consolidated, as of December 31, 2018)|
In the 2000s to early 2010s, Renesas had been one of the six largest semiconductor companies in the world. As of 2014, it was the world's largest automotive semiconductor maker, 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".
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, 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. The DRAM businesses of the three had become part of Elpida Memory, which went bankrupt in 2012 before being acquired by Micron Technology.
In 2011, Renesas Electronics was adversely affected by the 2011 Tōhoku earthquake and tsunami 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, decided to restructure its business, including the sale and consolidation of its Japanese domestic plants, to become profitable. In December 2012, INCJ, a Japanese public-private fund, and several key clients decided to invest in the company. 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.
In January 2013, Renesas transferred some of its back-end plants to J-Devices.
With the allotment of third-party shares to the nine investors completed in September 2013, INCJ became the largest shareholder in the company. Renesas announced its new business direction and issued its corporate presentation titled "Reforming Renesas” in October 2013.
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.
In July 2014, the subsidiary Renesas Mobile Communication was consolidated, after the company had decided to withdraw from the 4G wireless business.
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.
In 2020, Renesas announced its plans to wind down its production of diodes and the compound device.
The offerings of Renesas Electronics include:
- Microcontrollers: RL78, RA, RX, Synergy, RE R8C, H8, 78K,
- Microprocessors: SuperH, R32C / M32C/ M16C, V850, M32R,RH850 etc. and the RZ family built on the ARM architecture)
- System LSIs (System on a Chip e.g. R-Car)
The RX MCU familyEdit
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.
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 familyEdit
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 for the users.
|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 familyEdit
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. 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.
|Family||BIt Size||RAM (KB)||CPU||Lead Count (#)||Supply Voltage||Max Operating Frequency (Mhz)|
|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|
|Innovation Network Corporation of Japan||33.37%|
|GIC Private Limited -C||5.79%|
|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.
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.
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:
- Naka, Takasaki, Shiga, Saijo, Yamaguchi, Kawashiri
The back-end facilities, directly affiliated to Renesas Electronics, are located in:
- Yonezawa, Oita, Nishiki
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- New RZ Family Debuts: Powerful processors built around an Arm CPU
- Renesas Electronics and Renesas Mobile License ARM Processor IP for Next Generation Communications Processors and Application Processors
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- Renesas Electronics Microcontrollers
- Electronics Weekly: Renesas RX series microcontrollers – an overview
- Bloomberg: Renesas Electronics America Expands Its RX Microcontroller
- Official website
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