ATxmega32A4U Atmel Corporation, ATxmega32A4U Datasheet - Page 70

• Manufacturer Part Number: ATxmega32A4U
• Manufacturer: Atmel Corporation

Specifications of ATxmega32A4U

• 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 Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• 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

6.3
8331A–AVR–07/11
Events
Figure 6-1.
The event routing network consists of eight software-configurable multiplexers that control how
events are routed and used. These are called event channels, and allow for up to eight parallel
event configurations and routings. The maximum routing latency is two peripheral clock cycles.
The event system works in both active mode and idle sleep mode.
In the context of the event system, an indication that a change of state within a peripheral has
occurred is called an event. There are two main types of events: signaling events and data
events. Signaling events only indicate a change of state while data events contain additional
information about the event.
The peripheral from which the event originates is called the event generator. Within each periph-
eral (for example, a timer/counter), there can be several event sources, such as a timer compare
match or timer overflow. The peripheral using the event is called the event user, and the action
that is triggered is called the event action.
Event system overview and connected peripherals.
ADC
DAC
AC
Software
Port pins
CPU /
Event Routing Network
Controller
System
Event
Controller
IRCOM
Atmel AVR XMEGA AU
DMA
Real Time
Prescaler
Counters
Counter
Timer /
clk
USB
PER
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