Atmel AVR XMEGA AU series

6
8331B–AVR–03/12
Atmel AVR XMEGA AU
Serial Communication
USB full-speed device 1 1 1 1
USART 8 7 6 5
SPI 4 3 3 2
TWI 4 2 2 2
Crypto /CRC
AES-128 Yes Yes Yes Yes
DES Yes Yes Yes Yes
CRC-16 Yes Yes Yes Yes
CRC-32 Yes Yes Yes Yes
External Memory (EBI)
Chip selects 4 – – –
SRAM Yes
SDRAM Yes
Analog to Digital
Converter (ADC)
2 2 2 1
Resolution (bits) 12 12 12 12
Sampling speed (kbps) 2000 2000 2000 2000
Input channels per ADC 16 16 16 12
Conversion channels 4 4 4 4
Digital to Analog
Converter (DAC)
2 1 1 1
Resolution (bits) 12 12 12 12
Sampling speed (kbps) 1000 1000 1000 1000
Output channels per DAC 2 2 2 2
Analog Comparator (AC) 4 4 4 2
Program and Debug
Interface
PDI Yes Yes Yes Yes
JTAG Yes Yes Yes
Boundary scan Yes Yes Yes
Feature Details / sub-family A1U A3U A3BU A4U