8-bit MCUs target cost-sensitive, ultra-low-power design

Freescale Semiconductor has added the MC9S08QE8 to its QE series of ultra-low-power MCUs, which combines multiple power-saving modes with an inherently low-power architecture.

The energy-efficient MC9S08QE8 features two ultra-low-power stop modes, called Stop 2 and Stop 3, which reduce current to 200nA and 300nA respectively. A very low-power oscillator signal remains available in both modes to ensure accurate clocking of the realtime counter. The MCU is able to wake from Stop 3 mode within 6µs to maximise efficiency.

There are also reduced-power Run and Wait modes that allow the peripherals to operate while the voltage regulator is in standby. In addition, gating of peripheral clocks allows unused peripherals to be disabled for further power saving.

Through an optimised architecture that leads to lower operating voltage and current, the MC9S08QE8 provides extra opportunities for developers to extend battery life, while also meeting high demands for application performance.

A full ecosystem of resources supports developers using the MC9S08QE8. This includes application notes, reference designs, and a downloadable lowpower battery calculator.

 

FEATURES Internal clock source or low-power external oscillator On-chip voltage regulator Low-power 32kHz oscillator 16-pin to 32-pin package options 8kbyte on-chip Flash memory Peripherals for communication, timing, sampling

APPLICATIONS Personal medical monitors Domestic metering equipment Factory automation Point-of-Sale (POS) terminals

 

 

 

 

Development board DEMOQE8 is available to members of the Future Board Club. For more information, go to Freescale's DEMO9S08QE8 Product Page or alternatively if you would like to order a board go to http://www.my-boardclub.com/manf-offers.htm This offer is free and subject to qualification.

 

Freescale MC9S08QE8 MCU