ATxmega256A3U Atmel Corporation, ATxmega256A3U Datasheet - Page 72

• 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

6.4
8331A–AVR–07/11
Event Routing Network
Software-generated events last for one clock cycle and will overwrite events from other event
generators on that event channel during that clock cycle.
Table 6-1 on page 72
they are decoded.
Table 6-1.
The event routing network routes the events between peripherals. It consists of eight multiplex-
ers (CHnMUX), which can each be configured to route any event source to any event users. The
output from a multiplexer is referred to as an event channel. For each peripheral, it is selectable
if and how incoming events should trigger event actions. Details on cinfigurations can be found
in the datasheet for each peripheral. The event routing network is shown in
73.
STROBE
0
0
1
1
DATA
Manually generated events and decoding of events.
0
1
0
1
shows the different events, how they can be manually generated, and how
Data Event User
No event
Data event 01
Data event 02
Data event 03
Atmel AVR XMEGA AU
Signaling Event User
No event
No event
Signaling event
Signaling event
Figure 6-3 on page
72