ATxmega128A1 Atmel Corporation, ATxmega128A1 Datasheet - Page 65

• Manufacturer Part Number: ATxmega128A1
• Manufacturer: Atmel Corporation

Specifications of ATxmega128A1

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 78
• Ext Interrupts: 78
• Usb Speed: No
• Usb Interface: No
• Spi: 12
• Twi (i2c): 4
• Uart: 8
• 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: 4
• Dac Resolution (bits): 12
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 8
• Eeprom (bytes): 2048
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• 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: 8
• Output Compare Channels: 24
• Input Capture Channels: 24
• Pwm Channels: 24
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

6. Event System
6.1
6.2
8077H–AVR–12/09
Features
Overview
•
•
•
•
•
•
•
•
The Event System is a set of features for inter peripheral communication. It enables the possibil-
ity for a change of state in one peripheral to automatically trigger actions in other peripherals.
The change of state in a peripheral that will trigger actions in other peripherals is configurable in
software. It is a simple, but powerful system as it allows for autonomous control of peripherals
without any use of interrupt, CPU or DMA resources.
The indication of a change of state in a peripheral is referred to as an event. The events are
passed between peripherals using a dedicated routing network called the Event Routing Net-
work.
Routing Network and the peripherals that are connected.
Inter peripheral communication and signalling
CPU and DMA independent operation
8 Event Channels allows for up to 8 signals to be routed at the same time
100% predictable timing between peripherals
Events can be generated by
Events can be used by
Advanced Features
Operative in Active and Idle mode
– Timer/Counters (TCxn)
– Real Time Counter (RTC)
– Analog to Digital Converters (ADCx)
– Analog Comparators (ACx)
– Ports (PORTx)
– System Clock (Clk
– Timer/Counters (TCxn)
– Analog to Digital Converters (ADCx)
– Digital to Analog Converters (DACx)
– DMA (DMA) Controller
– Ports
– Manual Event Generation from software (CPU)
– Quadrature Decoding
– Digital Filtering
Figure 6-1 on page 66
SYS
)
shows a basic block diagram of the Event System with the Event
XMEGA A
65