ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 3

• 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. Pinout/Block Diagram
Figure 2-1.
Note:
8386A–AVR–07/11
GND
VDD
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
PC0
Power/Ground
Digital function
Analog function
1. For full details on pinout and alternate pin functions refer to
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Block diagram and pinout
AC0:1
AC0:1
AREF
AREF
JTAG
ADC
ADC
DAC
Programming, debug, test
Oscillator/Crystal/Clock
General Purpose I/O
Port C
Event System
Real Time
Controller
TEMPREF
Port R
OSC/CLK
Counter
Control
VREF
FLASH
Watchdog
Watchdog
Controller
Interrupt
Port D
EVENT ROUTING NETWORK
Timer
DATA BUS
”Pinout and Pin Functions” on page
DATA BUS
CPU
Controller
Crypto /
EEPROM
Reset
OCD
CRC
Port E
Supervision
Prog/Debug
Controller
Controller
Interface
Power
matrix
SRAM
Sleep
DMA
BUS
Port F
51.
XMEGA A3U
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
PF2
PF1
PF0
VCC
GND
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
VCC
GND
PD7
3