Auto Electronics

F Series Microcontrollers for In-Vehicle Automotive Systems

Addressing the growing demand for greater automation of in-vehicle comfort and safety systems, NEC Electronics Europe and NEC Electronics America, Inc. have introduced 13 32-bit V850ES/Fx3-L microcontrollers (MCUs) that offer increased functionality at a low cost for automotive body and safety applications. As members of NEC Electronics' F series MCUs, the 32-bit devices provide the price/performance ratio required foranti-theft mechanisms, climate control systems, airbags, hands-free systems and small thin-film-transistor (TFT) products.

The supplier's 0.15-micron process technology enables the V850ES/Fx3-L devices to execute 29 Dhrystone MIPS (DMIPS) at a clock speed of 20 MHz. Flash ROM ranges from 64 to 256 KB with RAM ranging from 6 to 12 KB, and the devices come in 64-, 80- or 100-pin packages that are pin-compatible with NEC Electronics' previous-generation V850ES/Fx2 devices, making migration to the new devices seamless and fast.

The MCUs are software and hardware compatible with the manufacturer's higher-performing V850ES/Fx3 devices to provide a migration path for future system changes. In addition, all V850ES/Fx3 and V850ES/Fx3-L devices share the same hardware and software development tools.

All devices support the controller area network and local interconnect network protocols. Flash memory is based on SuperFlash technology licensed from Silicon Storage Technology, Inc.

Samples of the V850ES/Fx3-L MCUs are planned for this spring. Volume production is scheduled for autumn 2008. Availability is subject to change without notice.


Vishay Intertechnology Inc. has announced a long-life, compact panel potentiometer with a high 2 W power rating, low temperature coefficient, and high operating torque. While standard panel potentiometers reach 100,000 cycles, the P30L offers a long life of 1 million cycles. For designers, this reduces the need for replacement parts, increasing reliability and lowering maintenance costs.

Featuring a fully sealed IP67 package with pure Sn terminals, the potentiometer is intended for industrial control panel, heavy-duty control, automotive and off-road control, and harsh environment applications in end products.

With only a 19.7 mm diameter, the new device offers designers a compact alternative to other 2 W panel potentiometers. Its cermet element provides better stability than carbon elements, while its 2500 Vrms dielectric strength offers greater reliability and robustness. Custom shafts are available in accordance to drawings supplied by customers.

The device offers a high maximum operating torque of 4.25 oz. per inch, and an end stop torque of 99 oz. per inch. The potentiometer features four resistances values from 1 kΩ to 50 kΩ over a 44.7-V to 300-V working range, with a low 3% typical contact resistance variation. An operating temperature range of -40 °C to +100 °C ensures reliable operation even in extreme environments.

Samples of the P30L are available. Production quantities are available this month, with lead times of eight to 10 weeks for larger orders. Pricing is $11.00 per unit in small quantities, and $7.00 per unit in large quantities.
Vishay Intertechnology


The PREMO RFID Z-axis antenna from Premo Group has the highest performance on perpendicular directions from the PCB and longer working range. The main applications of this newest development product are for remote tire pressure monitoring system and keyless entry system applications. The advantages of the new development are its flexibility and adaptability while positioning the PCB at horizontal or vertical angles.

The product is provided overcoated to increase the winding protection, and is implemented with a plastic base for absorption of impact efforts, vibration and twist. All raw materials are RoHs compliant.

The series SDTR has been qualified according to standard of reliability AECQ200. Hence, it is aimed at systems of high reliability as cars, railroads or aeronautics. The product is available with 10 values from 1 raw mH to 12 mH and quality factors between 20 and 40.

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