ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 96

• 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

36.8
36.8.1
36.8.2
8386A–AVR–07/11
Oscillators
Internal 1kHz Oscillator
32.768kHz Internal Oscillator
Figure 36-29. 1kHz Ouput from Internal ULP Oscillator Frequency vs. Temperature
Figure 36-30. 32.768kHz Internal Oscillator Frequency vs. Temperature
32.85
32.75
32.65
32.55
32.45
32.35
1.17
1.16
1.15
1.14
1.13
1.12
1.11
1.09
32.8
32.7
32.6
32.5
32.4
1.1
25
-45
-35
30
-25
35
-15
40
-5
45
5
Temperature [°C]
50
Temperature [°C]
15
55
25
60
35
65
45
70
55
XMEGA A3U
75
65
80
75
85
85
1.8 V
3.3 V
3.0 V
2.2 V
2.7 V
3.3 V
3.0 V
2.7 V
2.2 V
1.8 V
96