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32bit MCUs pack USB functionality on single chip

Posted: 22 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:32bit microcontrollers? USB 2.0? flash memory?

NEC Electronics Corp. and its subsidiaries in Europe and the Americas, NEC Electronics GmbH and NEC Electronics America Inc. have added 12 new 32bit devices with complete USB functionality on a single chip. The new 32bit V850ES/Jx3-H and V850ESJx3-U MCUs execute USB 2.0 data transfers at high speeds up to 12Mbit/s, and enable rapid development of applications that require USB connectivity and 32bit processing power for real-time control of industrial equipment, factory automation systems, PoS terminals, medical and testing devices, telecommunications and consumer electronics products and other embedded applications.

"We are seeing an increased demand for MCUs that can deliver the higher performance and greater functionality required in systems that are growing ever more complex," said Shigenobu Ishikawa, multipurpose microcomputer systems division, microcomputer operations unit, NEC Electronics. "USB is arguably the most popular and successful interconnect technology available today, and NEC Electronics' new 32bit MCUs now make it easier than ever for designers to add USB capabilities to their target systems."

Based on NEC Electronics' 32bit V850ES core, the MCUs offer the following key advantages: fast execution of instructions per clock cycle at 1.9 Dhrystone MIPS/MHz, efficient RISC CPU core with five-stage pipeline and CISC instructions, and low power consumption.

The four chips in the V850ES/Jx3-U lineup provide both USB host and function capability, while the eight chips in the V850ES/Jx3-H lineup provide USB function capability only. All of the new devices have the same instruction set and development environment as other V850-based cores, making it easy for designers to migrate from one V850 core to another.

Operation at a clock speed of 48MHz enables the chips to execute 98 MIPS. Like NEC Electronics' general-purpose V850ES/JG3 and V850ES/JJ3 MCUs, the new products also feature on-chip peripheral functions such as a motor control timer and real-time counter that simplify system design and contribute to lower component counts and smaller board sizes.

NEC Electronics is working with partners to provide USB drivers for the host and function controllers. Standard development tools include NEC Electronics' IECUBE full-function emulator, MINICUBE on-chip debugger and integrated debugger, compiler and simulator. Two dedicated USB starter kits with basic and advanced functionality, including application drivers, are expected to be available June.

Samples are available now in several pin count, memory and USB function configurations. Pricing varies depending on features. For example, pricing for the high-end V850ES/JH3-U lineup, which features 512Kbytes of flash memory, 56Kbytes of SRAM, and USB host and peripheral functions, is $9.50 per unit in sample quantities.

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