ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 243

• Manufacturer Part Number: ATxmega256A3U
• 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

20.10.1
8331A–AVR–07/11
Transaction complete interrupt
Figure 20-12 on page 243
shows how they are enabled.
Figure 20-12. Interrupts and events Scheme summary
The transaction complete interrupt is generated per endpoint. When an interrupt occurs, the
associated endpoint number is registered, and optionally added to the FIFO. The following two
interrupt sources use the interrupt vector:
Table 20-1.
Interrupt source
Transfer Complete (TRNIF)
Setup Complete (SETUPIF)
Endpoint MAX
Endpoint N + 1
Endpoint N
Successful
Complete
SETUP
transfer
IN/OUT
transfer
Transaction complete interrupt sources
EPIFE
EPIFE
Event System
STALLIF
RSMIF
CRCIF
SOFIF
SUSIF
RSTIF
Source
OVIF
UFIF
summarizes the interrupts and event sources for the USB module and
SETUPIF
TRNIF
Description
A SETUP transaction is completed
An IN or OUT transaction is completed
BUSSERIE
SETUPIE
STALLIE
BSEVIE
SOFIE
TRNIE
Interrupt Source
Asynchronous
Atmel AVR XMEGA AU
INTLVL1:0
INTLVL1:0
USB_TRN_COMPL_vect
USB_BUSEVENT_vect
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