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Next-gen Fujitsu MCUs run faster at less power

Posted: 23 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:CMOS? CPU? MCU? Fujitsu? 16LX?

Fujitsu's 16FX MCU series

Fujitsu Microelectronics Europe (FME) has announced the new 16FX MCU series, its next-generation 16bit devices. The new series retains compatibility with the current-generation 16LX MCUs while providing customers with performance enhancements including up to five times the computing power, 80 percent less power consumption and greater on-chip functionality.

Initially comprising four new devices, the 16FX series targets key market sectors, including industrial and automotive control applications where it meets the demand for higher computing power combined with a high integration level.

32bit performance
The 16FX series is based on an improved CPU with significantly increased internal bus bandwidth. As a result, program execution is about three times faster (depending on the memory model used) than 16LX at the same clock frequency. For example at 24MHz 16FX achieves more than 11 real MIPS (Dhrystone 2.1). New technology and improved design allow CPU frequencies up to 56MHz, thus allowing for processing performance ranges equivalent to 32bit processors.

Low power consumption is achieved by means of Fujitsu's new 0.18?m CMOS process technology, lower internal CPU voltage of 1.8V, a peripheral clock speed selectable independently from CPU speed and a reduced number of clocks per instruction (CPI).

Power consumption is crucial for battery-operated applications. This also applies to many car control units that are still active when the engine is switched off. Reduced power consumption can often save on system costs as potential battery capacities, voltage regulators or buffer capacities can be configured in a smaller format. Cooling measures can be eliminated and electromagnetic radiation is reduced, thus potentially expensive counter-measures (e.g. shielding) can also be dispensed with or substantially reduced.

Lower system cost
The reduction of system costs was a focus for the development of the 16FX series. For example, by means of an on-chip oscillator the 16FX devices can be operated without external resonators at speeds of either 100kHz or 2MHz. Applications that require a precise clock supply and an external resonator benefit from the fast and safe start-up of the 16FX with on-chip oscillator (less than 1ms and works even if the external resonator strikes) and can use the on-chip oscillator for monitoring the external clock source (clock monitor function).

16FX devices have an extended supply voltage range of 3-5.5V. In case the supply voltage drops momentarily below 3V the on-chip low voltage detection reset ensures that the 16FX application will not hang up.

In addition, optional alarm comparators are available for monitoring the analog parameters without disturbing the CPU. Only when, for example, the on-board voltage leaves a defined range an interrupt is generated allowing the CPU to take counter-measures (e.g. deactivate low prioritized loads).

Engineering samples are available today with full production coming on stream in June 2007.

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