ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 502

• 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

8331A–AVR–07/11
29 DAC - Digital to Analog Converter ..................................................... 382
30 AC - Analog Comparator ..................................................................... 393
28.4
28.5
28.6
28.7
28.8
28.9
28.10
28.11
28.12
28.13
28.14
28.15
28.16
28.17
28.18
28.19
28.20
29.1
29.2
29.3
29.4
29.5
29.6
29.7
29.8
29.9
29.10
29.11
30.1
30.2
30.3
30.4
30.5
ADC Channels ...............................................................................................357
Voltage reference selection ...........................................................................358
Conversion Result .........................................................................................358
Compare function ..........................................................................................360
Starting a conversion .....................................................................................360
ADC Clock and Conversion Timing ...............................................................360
ADC Input Model ...........................................................................................364
DMA transfer .................................................................................................365
Interrupts and events .....................................................................................365
Calibration .....................................................................................................365
Channel priority .............................................................................................365
Synchronous sampling ..................................................................................365
Register Description – ADC ...........................................................................366
Register Description - ADC Channel .............................................................373
Register Summary - ADC ..............................................................................380
Register Summary - ADC Channel ................................................................380
Interrupt vector Summary ..............................................................................381
Features ........................................................................................................382
Overview ........................................................................................................382
Voltage reference selection ...........................................................................383
Starting a conversion .....................................................................................383
Output and output channels ..........................................................................383
DAC Output model ........................................................................................383
DAC clock ......................................................................................................384
Low Power mode ...........................................................................................384
Calibration .....................................................................................................384
Register Description ......................................................................................385
Register Summary .........................................................................................392
Features ........................................................................................................393
Overview ........................................................................................................393
Input Sourcess ...............................................................................................394
Signal Compare .............................................................................................394
Interrupts and Events ....................................................................................394
Atmel AVR XMEGA AU
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