NEC 78K0/Lx3 8-Bit All Flash Microcontrollers

NEC’s 78K0/Lx3 family of 8-bit all flash microcontrollers (MCUs) feature on-chip liquid crystal display (LCD) controllers/drivers and extremely low power consumption levels. The MCUs are ideal for consumer electronics-type products that have LCD panels and strict power consumption requirements. The new devices can be used in home healthcare equipment such as scales, blood pressure monitors and blood glucose meters; HVAC and industrial systems such as utility meters; and household appliances such as coffee makers.

All of the new MCUs have integrated LCD drivers/controllers that help designers reduce the number of system components and increase system reliability. An optimized circuit design reduces standby power consumption by approximately 50 percent, to just 2.3 microamperes (uA), compared to the previous-generation 78K0/Lx2 MCUs, while an on-chip 16-bit A/D converter offers a 64-fold improvement in resolution. Additionally, by having eight rather than four common signal ports, the 78K0/Lx3 devices support up to 288 display segments compared to the previous generation’s 160. These improvements enable designers to create products with higher LCD resolution, or products with the same LCD resolution but fewer display segments.

The new MCUs are available in 76 configurations, with embedded flash memory capacities ranging from 8 to 60 kilobytes (KB) and pin counts ranging from 48 to 80. The flash memory is based on SuperFlash(R) technology licensed from Silicon Storage Technology, Inc.

Samples of the new 78K0/Lx3 devices will be available now. Pricing varies according to device specifications. For example, the 80-pin 78K0/LF3 MCU with 60 KB of flash memory is priced at $5 per unit for 1,000-lot quantities. Volume production is scheduled to begin in April 2007, and monthly production is expected to reach approximately 1,000,000 units by the third quarter of 2008.

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