ATxmega256A3BU Atmel Corporation, ATxmega256A3BU Datasheet - Page 379

• Manufacturer Part Number: ATxmega256A3BU
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3BU

• 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: 47
• Ext Interrupts: 49
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 8
• Twi (i2c): 2
• Uart: 6
• 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

Atmel AVR XMEGA AU
• Bit 7:4 – OFFSET[3:0]: Positive MUX setting offset
The Channel scan is enabled when COUNT !=0 and this register contains the offset for the next
input source to be converted on ADC channel 0 (CH0). The actual MUX setting for positive input
equals MUXPOS + OFFSET. The value is incremented after each conversion until it reaches the
maximum value given by COUNT. When OFFSET is equal to COUNT, OFFSET will be cleared
on the next conversion.
• Bit 3:0 – COUNT[3:0]: Number of input channels included in scan
This register gives the number of input sources included in the channel scan. The number of
input sources included is COUNT + 1. The input channels included are the range from MUXPOS
to MUXPOS + COUNT.
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