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

3.1
Figure 3-1.
8386A–AVR–07/11
PB[0..7]/
PA[0..7]
JTAG
Block Diagram
Digital function
Analog function
XMEGA A3U Block Diagram
PORT A (8)
PORT B (8)
Int. Refs.
Tempref
AREFA
AREFB
IRCOM
ADCA
ADCB
DACB
ACA
ACB
Programming, debug, test
Oscillator/Crystal/Clock
General Purpose I/O
The XMEGA devices are supported with a full suite of program and system development tools
including: C compilers, macro assemblers, program debugger/simulators, programmers, and
evaluation kits.
PORT C (8)
PC[0..7]
Event System
XTAL2
AES
DES
CRC
XTAL1
Controller
Controller
PORT R (2)
DMA
PR[0..1]
BUS Matrix
F
DATA BUS
PORT D (8)
a l
NVM Controller
EVENT ROUTING NETWORK
s
PD[0..7]
h
DATA BUS
CPU
SRAM
Generation
Oscillator
Circuits/
Clock
PORT E (8)
PE[0..7]
Prog/Debug
Controller
Controller
Controller
Oscillator
E
Interrupt
Control
E
Sleep
OCD
P
R
TOSC1
TOSC2
O
M
Real Time
Counter
To Clock
Generator
JTAG
Watchdog
Watchdog
PDI
Oscillator
Supervision
POR/BOD &
Timer
RESET
Power
USARTF0
TCF0
XMEGA A3U
PORT B
RESET/
PDI_CLK
PDI_DATA
PF[0..7]
VCC
GND
5