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Epson Introduces New RTCs with Embedded DTCXO for Automotive and Consumer Electronics Applications

(PresseBox) (Munich, ) Seiko Epson Corporation (TSE: 6724, "Epson"), the world leader in quartz crystal technology, today introduced its new RA8900 series and RX8900 series of real-time clock (RTC[1]) modules with built-in digital temperature-compensated crystal oscillators (DTCXO[2]).

There are two products in each series. All of the new products, samples of which are now shipping, boast high accuracy, low-current consumption, and a small form factor. The modules in the RA8900 series are designed for automotive applications and are AEC-Q200[3] compliant. The modules in the RX8900 series are for use in consumer electronics. The new RTC modules come in two different package sizes to meet the requirements of customers in a wide range of markets who need highly accurate timekeeping/clock functions. The RA8900CE and RX8900CE are housed in Epson's smallest-ever RTC package, a package whose maximum dimensions are 3.2 x 2.5 x 1.0t mm. The RA8900SA and RX8900SA, meanwhile, measure a maximum of 10.1 x 7.4 x 3.3t mm, making them size-compatible with earlier Epson RTC modules having a model number ending in SA.

Today's smart meters, banking systems, security systems, and countless other consumer systems and applications run on the basis of time information, making it essential to keep accurate track of time. Furthermore, automotive customers are demanding clocks that maintain accurate time for their car audio systems, dashboard clocks, and other applications that are subject to harsh environments with temperature extremes. Accelerating integration and downsizing of electronic equipment and a growing desire on the part of companies to reduce their environmental footprints are also driving market demand for smaller, more accurate RTCs that consume less current. Maintaining and improving the accuracy of real-time clocks which are built by combining a crystal unit, oscillation circuit, and timekeeping IC, is more difficult as component sizes shrink.

Epson has responded to this challenge by leveraging its state-of-the-art QMEMS[4] fabrication technology to manufacture high-precision tuning-fork crystal units and its semiconductor technology to fabricate circuits that drive the crystal units at very low power. The combination of these technologies enabled Epson to reduce the size of its latest RTCs while maintaining high accuracy and low current consumption. (At 0.70 µA, current consumption matches Epson's existing product, the RX-8803SA, and is the lowest in the industry for a DTCXO RTC.)

Epson will adjust and guarantee the frequency of these four new products at the factory before shipping them to customers. Factory adjustment alleviates users of the burden of tuning the frequency themselves, thus greatly improving design efficiency and quality.

"Our new RTCs offer accurate time information to electronic equipment, while their small size helps enable electronics manufacturers to reduce the size and current consumption of their systems," said Masayuki Kitamura, chief operating officer of Epson's Microdevices Operations Division. "Going forward, Epson will continue to leverage its unique technologies to provide customers with reliable, easy-to-use, industry-leading crystal device products."

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EPSON Europe Electronics GmbH

Epson Europe Electronics GmbH is a marketing, engineering and sales company and the European Headquarters for electronic devices of the Seiko Epson Corporation, Japan. Headquartered in Munich/Germany since 1989 with 50 employees, Epson Europe Electronics GmbH has several European sales representatives and has a European-wide network of distributors. Epson Europe Electronics provides value added services for semiconductors and quartz devices targeted to the mobile communication, automotive and home visual market. Epson products are recognised for energy saving, low power, small form factors and rapid time to market. Information about Epson Europe Electronics GmbH is available on the Internet under

About Epson

Epson is a global innovation leader whose product lineup ranges from inkjet printers and printing systems, 3LCD projectors and industrial robots to sensors and other microdevices. Dedicated to exceeding the vision of its customers worldwide, Epson delivers customer value based on compact, energy-saving, and high-precision technologies in markets spanning enterprise and the home to commerce and industry.

Led by the Japan-based Seiko Epson Corporation, the Epson Group comprises more than 73,000 employees in 94 companies around the world, and is proud of its ongoing contributions to the global environment and the communities in which it operates.