ATxmega32A4 Atmel Corporation, ATxmega32A4 Datasheet - Page 257

• Manufacturer Part Number: ATxmega32A4
• Manufacturer: Atmel Corporation

Specifications of ATxmega32A4

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Speed: No
• Usb Interface: No
• Spi: 7
• Twi (i2c): 2
• Uart: 5
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 4
• Eeprom (bytes): 1024
• 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: 5
• Output Compare Channels: 16
• Input Capture Channels: 16
• Pwm Channels: 16
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

22.2.1
8077H–AVR–12/09
Event System Filtering
For transmission, three pulse modulation schemes are available:
For reception, a minimum high-level pulse width for the pulse to be decoded as a logical 0 can
be selected. Shorter pulses will then be discarded and the bit will be decoded to logical 1 as if no
pulse where received.
One IRCOM will be available for use with any USART in the device. 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
other I/O pins or sources 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 Digital Input Filter
(DIF) on the Event Channels, that can be used for filtering. Refer to
on page
• 3/16 of baud rate period.
• Fixed programmable pulse time based on the Peripheral Clock speed.
• Pulse modulation disabled.
65” for details on using the Event System.
Section 6. ”Event System”
XMEGA A
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