NEC Electronics Corporation (TSE:6723) has developed a new line of 16-bit All Flash microcontrollers (MCUs). Built in the NEC Electronics’ 16-bit 78K0R CPU core, the 22 MCUs in the 78K0R/Kx3-L line-up are optimized for compact, low power systems that are driven by battery and enabling Ultra-Low Power applications. Samples will begin shipping this month. Volume production is planned to begin at the end of 2008, ramping up to a planned monthly turn-out of one million products within a year combined for all 22 models of the MCU.
This new 78K0R/Kx3-L All Flash MCUs delivers new potential to battery driven and sensor applications such as fire and security alarms and detectors, meters, domestic controls, industrial sensors and digital cameras with anti-shake stabilization, as well as handheld equipment such as medical diagnostics, data-logging or point of sale terminals. Not only does the range bring new levels of low power consumption, extending battery life, but also help to decrease system size and cost.
78K0R/Kx3-L All Flash Microcontrollers Features
The industry’s best in class power consumption
Thoroughly optimizing the circuit, NEC Electronics has reduced the power consumption during standby mode (in which only RTC functions operate) 60% compared to existing conventional consumption from 2.4 to 1.0 microamperes (µA). The decreased internal operation voltage also reduces consumption during 10 MHz operation 17% from 3.9 to 3.2 milliamperes (mA) and during 20MHz operation 16% from 8.5 to 7.2 milliamperes (mA). These innovations contribute to both power reduction and higher performance in the system overall, with the highest power/performance ratio ever in the industry, moving the bar from 1.8 to 1.5 mW/MIPS.
High-performance on-chip oscillators for three different operating frequencies
With three on-chip oscillator circuits for generating the power-saving, 1 MHz and high-performance 20 MHz operating frequencies are available in addition to the conventional 8 MHz frequency, meaning an oscillator optimal to the needs of the system can be selected. NEC Electronics has achieved an error of less than 1% in the operation frequency generated at 8 and 20 MHz, eliminating the need for an external oscillator to make asynchronous communication, which demands high performance. For these reasons, the All Flash MCUs reduce system costs and make systems more compact.
Built-in peripherals for sensor functions
To improve the conversion rate from inputted analog to digital signals, a 10-bit A/D converter circuit is optimized, halving the existing time for signal conversion from 6 to 3 microseconds compared to conventional products. By providing 1 internal op-amp channel for 2 internal comparator channels instead of external mounting, a wide range of analog data can be measured at low cost.
Program writing at 1.8 V
A dedicated booster circuit is built in, so the voltage required for program rewriting to Flash memory is reduced from 2.7 to 1.8 V in the new line-up. This improved energy use efficiency also extends the operating time for the system.
More info: NEC Electronics