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MCU family touts enhanced flash memory, on-chip LCD driver

Posted: 12 Aug 2005 ?? ?Print Version ?Bookmark and Share

Keywords:78k0/lx2? microcontroller? mcu? nec electronics?

The 78K0/Lx2 family of 8-bit microcontrollers (MCUs) from NEC Electronics Corp. features 36 product configurations with many memory, peripheral and packaging options. Each device incorporates an integrated liquid crystal display (LCD) driver/controller and in-application self-programming flash memory that makes them suitable for consumer appliance, home health care, HVAC, sprinkler and security system applications.

"Semiconductors continue to replace traditional analog or mechanical systems in common consumer applications," said Shigenobu Ishikawa, GM, Multipurpose Microcomputer Systems Division, 4th Systems Operations Unit, NEC Electronics. "Accordingly, NEC Electronics offers a range of low-cost, high-performance 8-bit microcontrollers to serve this growing market. The new 78K0/Lx2 family has a variety of features and peripherals that makes it ideal for consumer applications."

Each 78K0/Lx2 microcontroller features an integrated LCD driver/controller for powering displays with up to 160 segments. Integrating the display driver onto the controller reduces a system's component count and increases its reliability. The MCUs have from 16KB to 128KB of flash memory and up to 7KB of RAM. An in-application self-programming capability enables programs to be easily rewritten.

With power consumption of 2.5mA (compared to 7.6mA in previous mask ROM products operating at 5V and 10MHz, the 78K0/Lx2 MCUs still provide a fast wake-up time, typically only five microseconds from standby to full-speed operation. The MCUs also have a variety of peripherals designed to provide safe operation, including power-on-clear circuitry and low-voltage indicators. Operating voltages range from 1.8V to 5.5V.

All of the Lx2 series employ NEC Electronics' 0.15-micron process technology and SuperFlash technology licensed from Silicon Storage Technology, Inc. (SST).

Samples of 78K0/Lx2 MCUs will be available next month (September 2005), with mass production scheduled to begin January 2006. Pricing depends on packaging, memory and peripheral configuration. For example, the 78K0/LG2 MCU with 128 KB of flash memory is priced at $6 in 1,000-unit quantities.

- Marty Gold


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