ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 104

• 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

8386A–AVR–07/11
Figure 36-45. Offset vs. External VREF
Figure 36-46. Offset vs. V
-0.05
-0.15
-0.25
-0.35
-0.45
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.1
-0.1
-0.2
-0.3
-0.4
-1
0
0
1.6
1
Differential Mode, V
Differential Mode, V
1.2
1.8
CC
1.4
2
CC
CC
= 3.6V, External reference
= 3.6V, External reference.
1.6
2.2
1.8
2.4
VREF [V]
V
CC
2.6
2
[V]
2.2
2.8
2.4
3
2.6
3.2
XMEGA A3U
2.8
3.4
3
3.6
-40ºC
25ºC
85ºC
-40ºC
25ºC
85ºC
104