Atmel AVR2016 Guide de l'utilisateur Page 7

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Atmel AVR2016: RZRAVEN Hardware User’s Guide [APPLICATION NOTE]
8117EAVR07/12
7
Figure 2-3. Power source selection.
The Atmel AVRRAVEN has been designed to run from two 1.5V LR44 battery cells.
An onboard voltage regulator makes it possible to run power the AVRRAVEN from a 5V to 12V DC source. The external
voltage is applied to the two leftmost pins in the user I/O area (J401). The Atmel ATmega3290P’s ADC channel 2 is
connected to a voltage divider and the external voltage supply interface. This way it is possible for the application to
monitor the external operating voltage.
2.12 Interfaces
The AVRRAVEN module has multiple interfaces that can be used for serial communication, interaction with external
sensors and control units such as relays and of course programming and debugging.
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