NEC Electronics America, Inc. News
NEC Electronics Introduces 19 New 78K0R/Ix3 16-bit All Flash(TM) Microcontrollers for Inverter Control
Inverter control systems are found in an ever-wider range of products, in response to consumer demand for more energy-efficient appliances. Fine-tuned control of motors and heating elements can deliver significant energy savings in products ranging from refrigerators and air conditioners to dishwashers and magnetic induction cooking appliances. NEC Electronics' 78K0R/Ix3 MCUs, with 16-bit performance and 8-bit power consumption levels, are ideal for such applications.
All devices in the lineup share the following features: (1) CPU power consumption of only 1.8 milliwatts (mW) per MIPS (*1), the highest performance-to-power-consumption ratio in the industry; (2) on-chip oscillators capable of driving timers at rates up to 40 megahertz (MHz) for fine-tuned inverter control; (3) integrated hardware multiply and divide functionality for fast processing of mathematical algorithms; (4) integration of all analog circuits required for inverter control, including comparators and an integrated operational amplifier (op amp).
This combination of features responds to strong demand from appliance manufacturers for flexible, low-cost, high-performance MCUs to help shorten time to market. Under pressure to differentiate their products from competitor offerings, manufacturers stress innovative features, stylish design and lower power consumption, but this results in mounting development costs and longer development schedules. NEC Electronics' new MCUs allow fine-grained control of multiple types of 3-phase motors, making it easy to develop eco-friendly appliances. In addition, an all-flash memory configuration means that programs can be updated even after an MCU is mounted on a system board, allowing manufacturers to accelerate development schedules by developing software in parallel with hardware.
The principal features of NEC Electronics' 78K0R/Ix3 MCUs are: (1) Industry-leading performance to power consumption ratio The new MCUs are built around NEC Electronics' 78K0R CPU core that executes 13 MIPS at a clock speed of 20 MHz. Advances in process technology enable power consumption of only 1.8 mW per MIPS. (2) Fine-tuned inverter control via integrated multifunction timers Multifunction timers function as interval timers to generate periodic interrupts, as dividers to generate clock signals by dividing an input frequency, and as event counters to count external signals. The number of timer units has been increased from 8 channels to 12. This allows one channel of 6-phase pulse-width modulation (PWM) (*2) output for the 3-phase motors generally used in inverter control applications, as well as two channels of the half-bridge PWM (*3) output commonly used in magnetic induction cooking systems. (3) First 16-bit MCUs with integrated inverter control circuits In another industry first, the 78K0R/Ix3 MCUs integrate all of the basic analog circuits needed for inverter control, including an op amp, comparators, and high-speed A/D converters. By replacing discrete components with an integrated solution, manufacturers can dramatically reduce their bill of materials costs and save space on system boards. (4) Wide selection of memory and packaging options Available on-chip memory configurations include 16, 32, 48 or 64 kilobytes (KB) of internal flash memory and 1, 1.5, 2 or 3 KB of internal RAM. Packaging options include SSOP and LQFP packages in pin counts ranging from 30 to 64 pins. With a total of 19 MCUs in the lineup, designers can choose the optimum configuration for their applications. (5) Full development tools support NEC Electronics' MCUs are supported by a comprehensive suite of development tools, including NEC Electronics' MINICUBE2 on-chip debugger, IECUBE emulator for full tracing, starter kits and software tools. Compiler suites are also available from third-party source, IAR Systems.
Offering 16-bit performance at 8-bit power consumption levels, these new MCUs will enable appliance manufacturers to reduce bill of materials and development costs, and be faster to market with the eco-friendly products that consumers demand. The principal specifications of the new MCUs can be found in the attachment at the end of this news release.
Pricing and Availability
The 78K0R/Ix3 MCUs are expected to be available in sample quantities in
More information about NEC Electronics' extensive MCU product offerings can be found athttp://www.am.necel.com/micro.
(*1) MIPS Abbreviation of million instructions per second. The cited value of 13 MIPS is based on the microcontroller Dhrystone benchmark (version 1.1) score. (*2) 6-phase PWM 6-phase pulse-width modulation. A motor with U-phase, V-phase, and W-phase coils rotates when AC currents of different phase are supplied to each of the coils. The AC currents are generated by supplying 6-phase PWM output to six transistor channels, consisting of three upper-arm phases and three lower-arm phases. (*3) Half-bridge PWM Pulse-width modulation (PWM) output consisting of an upper-arm phase and a lower-arm phase. Half-bridge PWM is commonly used by magnetic induction cooking heaters instead of 6-phase PWM.
About NEC Electronics
NEC Electronics Corporation (TSE: 6723) specializes in semiconductor products encompassing advanced technology solutions for the high-end computing and broadband networking markets, system solutions for the mobile handset, PC peripherals, automotive and digital consumer markets, and platform solutions for a wide range of customer applications. NEC Electronics Corporation has 25 subsidiaries worldwide including NEC Electronics America, Inc. (http://www.am.necel.com) and NEC Electronics (
All Flash is a trademark of NEC Electronics Corporation. NEC Electronics is either a registered trademark or trademark of NEC Corporation in the
Main Specifications of NEC Electronics' 78K0R/Ix3 Microcontrollers 78K0R/IB3 78K0R/IC3 78K0R/ID3 78K0R/IE3 Pin count and package 30 pin 38 pin 44 pin 48 pin 52 pin 64 pin LQFP SSOP SSOP LQFP TQFP LQFP (10x10mm, 12x12mm) Flash memory 16K/32K 16K/ 16K/ 16K/32K/ 32K/48K/ 32K/48K/ Internal 32K 32K 48K/64K 64K 64K memory RAM 1K/1.5K 1K/ 1K/ 1K/1.5 1.5K/2K/ 1.5K/2K/ 1.51K 1.51K 2K/3K 3K 3K External oscillator or clock 2 ~ 20MHz input Main system clock High-speed 8MHz, 20MHz/40MHz*(Typ.) internal *40MHz for only for 16-bit timers oscillator Low speed internal 30KHz for watchdog timers (Typ.) oscillator Sub clock - 32.768KHz Min. instruction execution time 0.05uS@20MHz Total 23 31 37 42 47 57 CMOS I/O 21 27 33 36 40 50 I/O CMOS input 2 4 4 4 4 4 ports CMOS output - - - - 1 1 N-ch open drain - - - 2 2 2 16-bit timers 12ch Watchdog Timers timers 1ch Real-time counters - 1ch CSI x Serial 2ch/UART - - 1ch 1ch 1ch 1ch inter- face CSI/UART/ simplified I2C 1ch 1ch 1ch 1ch 1ch 1ch UART 1ch 1ch - - - - Multi- master I2C - - - 1ch 1ch 1ch Multiplier / divider 16-bit x 16-bit = 32-bit (multiplication) 32-bit / 32-bit = 32-bit (division) 10-bit A/D Analog converters 6ch 8ch 10ch 11ch 11ch 12ch circ- uits Programmable gain 1ch (gain selectable from 1, 4, 6, 8, 10, 12) amplifier Comparators 2ch DMA controllers 2ch Power on clear (POC) Supported Low voltage indicator Supported (LVI) Power supply voltage 2.7V ~ 5.5V
SOURCE NEC Electronics America, Inc.
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