ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 75

• 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

35.14.2
Table 35-16. Calibrated 2MHz Internal Oscillator characteristics
35.14.3
Table 35-17. Calibrated 32MHz Internal Oscillator characteristics
35.14.4
Table 35-18. 32kHz Internal ULP Oscillator characteristics
35.14.5
Table 35-19. Calibrated 32MHz Internal Oscillator characteristics
1.
8386A–AVR–07/11
Symbol
Symbol
Symbol
Symbol
f
OUT
f
IN
The maximum ouput frequency vs. supply voltage is linear between 1.8V and 2.7V, and can never be higher than 4 times the
Calibrated 2MHz RC Internal Oscillator characteristics
Calibrated and tunable 32MHz Internal Oscillator characteristics
32kHz Internal ULP Oscillator characteristics
Internal Phase Locked Loop (PLL) characteristics
maximum CPU frequency.
Parameter
Frequency range
Factory calibration accuracy
User calibration accuracy
DFLL calibration stepsize
Parameter
Frequency range
Factory calibration accuracy
User calibration accuracy
DFLL calibration step size
Parameter
Output frequency
Parameter
Input Frequnecy
Ouput frequnecy
Start-up time
re-lock time
(1)
DFLL can tune to this frequency over
voltage and temperature
T = 85°C, V
DFLL can tune to this frequency over
voltage and temperature
T = 85°C, V
Output frequnecy must be within f
CC
CC
Condition
Condition
Condition
Condition
= 3.0V
= 3.0V
OUT
Min
-1.5
-0.2
Min
-1.5
-0.2
Min
Min
1.8
0.4
30
20
20
0.22
0.23
Typ
Typ
Typ
Typ
2.0
32
38
25
25
XMEGA A3U
Max
Max
Max
Max
128
2.2
1.5
0.2
1.5
0.2
55
64
32
Units
Units
Units
Units
MHz
MHz
MHz
kHz
µs
%
%
75