ATxmega256A3 Atmel Corporation, ATxmega256A3 Datasheet - Page 109
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ATxmega256A3
Manufacturer Part Number
ATxmega256A3
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega256A3
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 Speed
No
Usb Interface
No
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
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8068T–AVR–12/10
10. Operating Frequency and Voltage Limitation
Figure 36-3. Operating Frequnecy and Voltage Limitation
11. Inverted I/O enable does not affect Analog Comparator Output
To ensure correct operation, there is a limit on operating frequency and voltage.
on page 109
Problem fix/Workaround
None, avoid using the device outside these frequnecy and voltage limitations.
The inverted I/O pin function does not affect the Analog Comparator output function.
Problem fix/Workarund
Configure the analog comparator setup to give a inverted result (i.e. connect positive input to
the negative AC input and vice versa), or use and externel inverter to change polarity of
Analog Comparator Output.
shows the safe operating area.
MHz
15
30
2.4
Safe operating
area
3.6
V
XMEGA A3
Figure 36-3
109