NEC Electronics America, Inc. expanded its lineup of low-power 32-bit V850ES/Jx3[tm] All Flash[tm] microcontrollers (MCUs) with the new V850ES/Jx3-L[tm] MCUs, which offer the lowest standby current in their class to help meet stringent power requirements in battery-backed multiphase electricity meters, high-end blood glucose meters, test and instrumentation equipment, point-of-sale systems and other high-end portable devices that demand high performance, low power consumption and an extensive variety of integrated peripherals.
Backward compatibility with earlier generations of NEC Electronics’ V850[tm] All Flash MCUs provides designers with an easy upgrade path, while compatibility with other MCUs in the V850ES/Jx3 lineup, such as those introduced in September 2007, gives designers the flexibility to select from a variety of compatible devices with higher performance and up to one megabyte (MB) of on-chip memory.
The requirement for low-power-consuming components in high-end portable devices has continued to increase steadily, particularly in the home healthcare and test and measurement markets where performance and reliability are critical. NEC Electronics’ new MCUs are based on a combination of established technologies and new advancements that deliver the reduced power levels and increased reliability that designers are seeking.
One key differentiator of these products is the way power is controlled in the flash memory circuit, traditionally the largest consumer of power in an MCU. Due to improvements made by NEC Electronics, the new devices consume only 0.9 milliwatts (mW) of power per Dhrystone MIPS (DMIPS) during active operation, and as little as 1.5 microamperes in standby mode.
In addition to NEC Electronics’ popular V850ES[tm] RISC CPU core and a highly efficient pipeline architecture that executes up to 43 DMIPS (1.1) at clock speeds ranging from 5 to 20 megahertz (MHz), the V850ES/Jx3-L MCUs offer flash memory capacities of 128 or 256 kilobytes (KB), embedded RAM up to 16 KB, operating voltages from 2.2 to 3.6 volts (V) and an I/O tolerance of 5V. The new MCUs also feature enhanced, integrated digital signal processing (DSP) capability, including divide/multiply functions for high-end applications such as motor control and metering.
To further reduce component count and system cost, the MCUs include up to three UART channels, three I2C channels or five clock serial interface (CSI) channels, a built-in cyclic redundancy check (CRC) circuit, an advanced hardware multiplier for fast execution of algorithms and an external bus interface that supports expanded memory. One channel of 16-bit watchdog timer with a dedicated internal oscillator, a watch timer, up to 12 channels of 10-bit A/D conversion, up to two channels of 8-bit D/A conversion, a direct memory access (DMA) controller with four independent DMA channels, a two-level low-voltage detector, a real-time output port and an on-chip debugging circuit with interrupt functionality complete the MCUs’ highly integrated, highly efficient design.
The MCUs are available in 80- and 100-pin low-profile quad flat pack (LQFP) packages. The 80-pin LQFP is available in standard 14 x 14 millimeter (mm) or 12 x 12 mm sizes that further contribute to miniaturization in portable equipment. The 100-pin LQFP is available in fine-pitch 14 x 14 mm or 14 x 20 mm versions.
Development tools for the NEC Electronics’ new MCUs include a starter kit, low-cost MINICUBE2[tm] debugger, JTAG-based MINICUBE[tm] on-chip debugger, IECUBE emulator with full trace and emulation capabilities, NEC Electronics C compiler and simulator, NEC Electronics PG-FP5 flash programmer, and C compilers from IAR Systems (www.iar.com) and Green Hills Software (www.ghs.com).
In 2007, NEC Electronics Corporation was ranked the number one supplier of 32-bit MCUs worldwide according to the Gartner Dataquest April 2008 ranking report.
Pricing and Availability
Pricing varies according to memory configurations. For example, the 100-pin V850ES/JG3-L MCU with 256KB of flash memory and 16KB RAM is $6.00 each in sample quantities. Dedicated starter kits are expected to be available in summer 2008 from NEC Electronics America. Mass production of the 100-pin version is scheduled for the end of July 2008. Pricing and availability are subject to change without notice.
About NEC Electronics America, Inc.
NEC Electronics America, Inc., headquartered in Santa Clara, California, is a wholly owned subsidiary of NEC Electronics Corporation (TOKYO: 6723), a leading provider of semiconductor products encompassing advanced technology solutions for the broadband and communications markets; system solutions for the mobile, PC, automotive and digital consumer markets; and multi-market solutions for a wide range of consumer applications. NEC Electronics America offers local manufacturing in Roseville, California, and the global manufacturing capabilities of its parent company. In the Americas, NEC Electronics America markets and sells industrial-type active-matrix LCD modules from NEC LCD Technologies, Ltd., a global leader in innovative display technologies. More information about the products offered by NEC Electronics America can be found at www.am.necel.com.
NEC Electronics is a trademark of NEC Corporation. All Flash, V850, V850ES, V850ES/Jx3, V850ES/Jx3-L, MINICUBE and MINICUBE2 are either registered trademarks or trademarks of NEC Electronics Corporation in the United States and/or other countries.