The Journal of Industry and Technology

Industrial Analytical Instrumentation

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Precision electronics components

Epson's new low-current real-time clock module enables
supercapacitors to replace batteries in electronic equipment

Seiko Epson Corporation (TSE: 6724, "Epson") offer the industry's lowest power real-time clock (RTC) module [1]. With typical current consumption of just 130 nA [2], Epson's RX6110SA current consumption level is 35% lower than that of the RX-8571SA, Epson's existing lowest-current RTC product [3].

Epson's RX6110SA enables the reduction of hazardous substances by allowing electronic device makers to replace batteries with supercapacitors. With a 0.33F supercapacitor, Epson's RX6110SA can operate for 16 weeks. Epson's RX6110SA achieves an operating current one half of leading competitors by employing special low-power circuit design techniques and Epson's unique low-leakage IC process technology. Compared to microcontroller implementations, Epson's RX6110SA can operate eight times longer.

The RX6110SA also includes a diode-less power-supply switching circuit which allows it to operate and charge from power supplies ranging from 5 V down to as low as 1.1V. By operating at a lower voltage than competition, Epson's RX6110SA further extends battery life.

In addition to keeping time, real-time clocks are used to log power-loss events and save system state when power is lost. Epson's RX6110SA offers a rich feature set to support these needs, including a 32.768 kHz output, alarms and timers, and RAM. The RX6110SA supports both SPI-bus [4] and I2C-bus [5] interfaces.

Epson in profile
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.

For further information, view website: www.epson.com

Epson Europe Electronics GmbH in profile
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.

For further information about Epson Europe Electronics GmbH, view website: www.epson-electronics.de   
Refer to page 356

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