Atmel AVR XMEGA User Manual
®
AVR
MICROCONTROLLERS
AVR XMEGA
8/16-bit High Performance Low Power Flash Microcontrollers
Atmel® introduces the XMEGA™ – a brand new AVR® microcontroller. With the same acclaimed
characteristics as the established AVR devices, the XMEGA operates from just 1.6 volt with up to
32 MIPS at 32 MHz.
Time critical real-time and interrupt driven applications become safer, more responsive, and predict-
able with XMEGA. AVR XMEGA features a CPU independent Event System, DMA controller, and Mul-
tilevel Interrupt Controller. With multiple time bases, extreme communication bandwidth and special
features like Cryptography support, XMEGA is number one for demanding 8- and 16-bit embedded
applications. At the same time XMEGA’s 2nd generation picoPower™ technology with only 100 nA
sleep current is the best choice for battery operated and energy critical applications.
XMEGA features
Innovative Event System for fast, CPU independent inter-peripheral communication
4-channel DMA Controller boosts MCU performance
100% predictable timing
High-speed 12-bit ADC and DAC
Fast AES and DES crypto engine
2nd generation of picoPower technology
AVR XMEGA microcontrollers are the perfect solution for a wide range of applications:
• Industrial control
• Climate control
• Hand-held battery
• Factory automation
• ZigBee
• Power tools
• Sensors
• Motor control
®
• HVAC
• Wireless encryption
• Networking
• Metering
• Optical transceivers
• Medical applications
• Alarm systems
• White goods
AVR XMEGA MICROCONTROLLER
The Complete Microcontroller - XMEGA
Atmel’s AVR has grown to become the preferred MCU for demanding embedded projects
[1]
. With the
brand new XMEGA operating from only 1.6 volts with speeds up to 32 MHz, designers now get even more
performance and low power capabilities. With an impressive list of features and a drastically increased
peripheral throughput, the CPU can spend less time handling peripherals and even more time in sleep
mode.
AVR CPU
32 MHz
1.6V
12-bit ANALOG
ADC and DAC
2 Msps/1 Msps
MEMORIES
Flash
EEPROM
SRAM
16-bit TIMERS
Real-Time Counter
Timer/Counters
DMA Controller
4-channels
COMMUNICATION
USART
SPI
TWI
Event System
Interrupt Controller
CRYPTOGRAPHY
AES
DES
Event System
Like a reflex in the human body, the innovative
XMEGA Event System enables inter-peripheral
communication without CPU or DMA usage. This
Respo nse Tim e
Conven tional MCU
ensures 100% predictable and short response
time. Up to 8 simultaneous events or interrupt
conditions in the peripherals can automatically
XMEGA w ith Even t Syste m
Appli cation compl exity
start actions in other peripherals.
Real 12-bit ADC and DAC
For high analog accuracy the XMEGA features high-speed 12-bit analog peripherals. Capable of up to 2
Msps, XMEGA’s ADCs deliver the fastest sample rate and most accurate result compared to conventional
MCUs. Since XMEGA also features two 12-bit digital-to-analog converters (DAC) with up to 1 Msps and
four advanced analog comparators, XMEGA microcontrollers have leading analog integration.
DMA Controller
A 4-channel DMA Controller enables fast, CPU
100% CPU us age
withou t DMA
independent data transfer that significantly boosts
performance. The DMA Controller in XMEGA
with DM A
handles transfers between all combinations of
data memories and peripherals. The AVR CPU
register file and multiple bus layers ensures that
MSB
Commu nicati on rate
the data bus is always accessible for the XMEGA DMA Controller.
Programmable Multilevel Interrupt Controller
All peripherals have software selectable interrupt levels and different interrupt vectors. Important interrupts
are executed immediately and tasks are prioritized with minimum latency.
Performance Peripherals
XMEGA is packed with new, improved peripherals including:
• multiple analog comparators
• several 16-bit Timer/Counters with 8 unique
time bases
• multiple USARTs, TWIs and SPIs
®
• IrDA
• Fast AES and DES crypto engine.
2007 CMP Embedded Brands Keys Decisions in Embedded Development Survey.
[1]
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