ATxmega32A4 Atmel Corporation, ATxmega32A4 Datasheet - Page 177

• 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

15.3
8077H–AVR–12/09
Port Override
The Pattern Generation unit can be used to generate a synchronized bit pattern on the port it is
connected to. In addition, the waveform generator output from the Compare Channel A can be
distributed to and override all the port pins. When the Pattern Generator unit is enabled the DTI
unit is bypassed.
The Fault Protection unit is connected to the Event System, enabling any event to trigger a fault
condition that will disable the AWeX output.
Common for all the timer/counter extensions is the port override logic.
shows a schematic diagram of the port override logic. When the dead-time enable (DTIENx) bit
is set the timer/counter extension takes control over the pin pair for the corresponding channel.
Given this condition the Output Override Enable (OOE) bits takes control over the CCxEN.
Note that timer/counter 1 (TCx1) can still be used even when DTI channels A, B, and D are
enabled.
Figure 15-2 on page 178
XMEGA A
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