ATxmega256A3BU Atmel Corporation, ATxmega256A3BU Datasheet - Page 312

• Manufacturer Part Number: ATxmega256A3BU
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3BU

• 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: 47
• Ext Interrupts: 49
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 8
• Twi (i2c): 2
• Uart: 6
• 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

24. IRCOM - IR Communication Module
24.1
24.2
8331A–AVR–07/11
Features
Overview
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•
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•
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XMEGA devices contain an infrared communication module (IRCOM) that is IrDA compatible for
baud rates up to 115.2kbps. It can be connected to any USART to enable infrared pulse encod-
ing/decoding for that USART.
Figure 24-1. IRCOM connection to USARTs and associated port pins.
The IRCOM is automatically enabled when a USART is set in IRCOM mode. The signals
between the USART and the RX/TX pins are then routed through the module as shown in
24-1 on page
infrared pulse. It is also possible to select an event channel from the event system as input for
the IRCOM receiver. This will disable the RX input from the USART pin.
Pulse modulation/demodulation for infrared communication
IrDA compatible for baud rates up to 115.2kbps
Selectable pulse modulation scheme
Built-in filtering
Can be connected to and used by any USART
– 3/16 of the baud rate period
– Fixed pulse period, 8-bit programmable
– Pulse modulation disabled
IRCOM
Decoding
Encoding
Pulse
Pulse
312. The data on the TX/RX pins are the inverted value of the transmitted/received
encoded RXD
decoded TXD
decoded RXD
encoded TXD
Event System
USARTxn
Atmel AVR XMEGA AU
....
DIF
USARTD0
USARTC0
events
RXDnx
TXDnx
RXD...
TXD...
RXDD0
TXDD0
RXDC0
TXDC0
Figure
312