ATXMEGA256A3B-MH Atmel, ATXMEGA256A3B-MH Datasheet - Page 256

• Manufacturer Part Number: ATXMEGA256A3B-MH
• Description: MCU AVR 256KB FLASH A3B 64-QFN
• Manufacturer: Atmel
• Series: AVR® XMEGAr

Specifications of ATXMEGA256A3B-MH

• Core Processor: AVR
• Core Size: 8/16-Bit
• Speed: 32MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Size: 256KB (128K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 3.6 V
• Data Converters: A/D 16x12b; D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-MLF®, 64-QFN
• Processor Series: ATXMEGA256x
• Core: AVR8
• Data Bus Width: 8 bit, 16 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 32 MHz
• Number Of Programmable I/os: 49
• Number Of Timers: 7
• Operating Supply Voltage: 1.6 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 8 Channel
• On-chip Dac: 12 bit, 2 Channel
• For Use With: ATAVRONEKIT - KIT AVR/AVR32 DEBUGGER/PROGRMMRATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ATXMEGA256A3B-MU; ATXMEGA256A3B-MU

22. IRCOM - IR Communication Module
22.1
22.2
8077H–AVR–12/09
Features
Overview
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XMEGA contains an Infrared Communication Module (IRCOM) IrDA 1.4 compatible module for
baud rates up to 115.2 kbps. This supports three modulation schemes: 3/16 of baud rate period,
fixed programmable pulse time based on the Peripheral Clock speed, or pulse modulation dis-
abled. There is one IRCOM available, and this can be connected to any USART to enable
infrared pulse coding/decoding for that USART.
Figure 22-1. IRCOM connection to USARTs and associated port pins
The IRCOM is automatically enabled when a USART is set in IRCOM mode. When this is done
signals between the USART and the RX/TX pins are routed through the module as shown in
ure 22-1 on page
input for the IRCOM receiver. This will disable the RX input from the USART pin.
Pulse modulation/demodulation for infrared communication
IrDA 1.4 Compatible for baud rates up to 115.2 kbps
Selectable pulse modulation scheme
Built in filtering
Can be connected to and used by any USART
– 3/16 of baud rate period
– Fixed pulse period, 8-bit programmable
– Pulse modulation disabled
IRCOM
Decoding
Encoding
Pulse
Pulse
256. It is also possible to select an Event Channel from the Event System as
encoded RXD
decoded TXD
decoded RXD
encoded TXD
Event System
USARTxn
....
DIF
USARTD0
USARTC0
events
RXDnx
TXDnx
XMEGA A
RXD...
TXD...
RXDD0
TXDD0
RXDC0
TXDC0
Fig-
256