AVR Controller einer einzigen (!) Batterie betreiben

[Martin]

Sehr spannend finde ich das:
(bei Reichelt nocht nicht zubekommen...)


ATtiny43U - Ultra Low Voltage device for Portable Applications         
To meet the demands of portable battery-powered applications, Atmel introduces the low voltage microcontroller, ATtiny43U.
A typical microcontroller requires at least 1.8V to operate, while the voltage of a single battery-cell typically ranges from 1.2V to 1.5V when fully charged, and then drops gradually below 1V during use, still holding a reasonable amount of charge. This means a regular microcontroller needs at least two battery cells.
Atmel has solved this problem by integrating a boost converter inside the ATtiny43U, converting a DC voltage to a higher level, and bridging the gap between minimum supply voltage of the microcontroller and the typical output voltages of a standard single cell battery. The boost converter provides the microcontroller with a fixed supply voltage of 3.0V from a single battery cell even when the battery voltage drops down to 0.7V.

[img alt=ATtiny43U width=550 height=181]http://www.atmel.com/products/avr/images/ATtiny43U.jpg[/img]

This allows non-rechargeable batteries to be drained to the minimum, thus extending the battery life. To avoid damage of battery cell of rechargeable batteries, there are programmable shut-off levels above the critical minimum voltage level.         

           
                                                              Click here to see the movie version