ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 313
ATxmega256A3U
Manufacturer Part Number
ATxmega256A3U
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega256A3U-AU
Manufacturer:
TI
Quantity:
12 000
Part Number:
ATxmega256A3U-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATxmega256A3U-MH
Manufacturer:
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Quantity:
1 450
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24.2.1
8331A–AVR–07/11
Event System Filtering
For transmission, three pulse modulation schemes are available:
For reception, a fixed programmable minimum high-level pulse width for the pulse to be decoded
as a logical 0 is used. Shorter pulses will then be discarded, and the bit will be decoded to logical
1 as if no pulse was received.
The module can only be used in combination with one USART at a time. Thus, IRCOM mode
must not be set for more than one USART at a time. This must be ensured in the user software.
The event system can be used as the receiver input. This enables IRCOM or USART input from
I/O pins or sources other than the corresponding RX pin. If event system input is enabled, input
from the USART's RX pin is automatically disabled. The event system has a digital input filter
(DIF) on the event channels that can be used for filtering. Refer to
for details on using the event system.
• 3/16 of the baud rate period
• Fixed programmable pulse time based on the peripheral clock frequency
• Pulse modulation disabled
Atmel AVR XMEGA AU
”Event System” on page
313
69”
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