AVR1010 Datasheet, PDF (1/13 Pages) ATMEL Corporation – Minimizing the power consumption of Atmel AVR XMEGA devices

AVR1010: Minimizing the power consumption of
Atmel AVR XMEGA devices
Features
• Sleep modes
• Clock prescaling and source switching
• Power Reduction Registers
• RTC clock source
• State of digital I/O
• Watchdog
• Brown Out Detector
• JTAG interface
1 Introduction
The Atmel^® AVR^® XMEGA^® devices are capable of achieving extremely low power
consumption, which is required by both portable electronics and other battery-
powered applications.
To reach the lowest possible power figures there are a few points to pay attention
to – it is not only the sleep mode that defines the power consumption, but also the
state of the I/O pins, the number of enabled peripheral modules and so on.
This application note describes what must be done to achieve the lowest possible
power consumption for XMEGA devices. Example code is also supplied, which
compiles with both GCC and IAR Embedded Workbench^®.
8-bit
Microcontrollers
Application Note
Preliminary
Figure 1-1. The XMEGA devices can achieve powers that are barely measurable.
Rev. 8267B-AVR-12/10