ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 5

• Manufacturer Part Number: ATxmega256A3U
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3U

• Flash (kbytes): 256 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 50
• Ext Interrupts: 50
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 10
• Twi (i2c): 2
• Uart: 7
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 16
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 4
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.6 to 3.6
• Operating Voltage (vcc): 1.6 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 7
• Output Compare Channels: 22
• Input Capture Channels: 22
• Pwm Channels: 22
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

2.1
Figure 2-1.
8331A–AVR–07/11
Block Diagram
Digital function
Analog function
Bus masters / Programming / Debug
Atmel AVR XMEGA AU block diagram.
PORT A (8)
PORT B (8)
Int. Refs.
Tempref
AREFA
AREFB
DACA
ADCA
ADCB
DACB
ACA
ACB
Oscillator / Crystal / Clock
General Purpose I/O
Battery Backup
Supervision
Controller
Event System
CRC
AES
DES
Power
V
Controller
Controller
BAT
PORT C (8)
EVENT ROUTING NETWORK
DMA
Matrix
32.768 kHz
Real Time
BUS
Counter
XOSC
F
a l
NVM Controller
s
DATA BUS
h
DATA BUS
CPU
SRAM
EVENT ROUTING NETWORK
PORT D (8)
Prog/Debug
Controller
Controller
Controller
Oscillator
E
Interrupt
Control
E
Sleep
OCD
Generation
P
Oscillator
Circuits/
R
Clock
PORT E (8)
O
Atmel AVR XMEGA AU
M
Real Time
Counter
JTAG
PDI
EBI
Supervision
POR/BOD &
PORT F (8)
Watchdog
Watchdog
RESET
Oscillator
Power
Timer
PORT P (8)
PORT N (8)
PORT M (8)
PORT K (8)
PORT H (8)
PORT G (8)
PORT L (8)
PORT J (8)
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