ATxmega256A3B Atmel Corporation, ATxmega256A3B Datasheet - Page 164

• Manufacturer Part Number: ATxmega256A3B
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3B

• 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: 47
• Ext Interrupts: 49
• Usb Speed: No
• Usb Interface: No
• Spi: 8
• Twi (i2c): 2
• Uart: 6
• 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

14.10 DMA Support.
14.11 Timer/Counter Commands
8077H–AVR–12/09
The interrupt flags can be used to trigger DMA transactions.
transfer triggers available from the T/C, and the DMA action that will clear the transfer trigger.
For more details on using DMA refer to
Table 14-2.
A set of commands can be given to the Timer/Counter by software to immediately change the
state of the module. These commands give direct control of the Update, Restart, and Reset
signals.
An update command has the same effect as when an update condition occurs. The update com-
mand is ignored if the Lock Update bit is set.
The software can force a restart of the current waveform period by issuing a restart command. In
this case the Counter, direction, and all compare outputs are set to zero.
A reset command will set all Timer/Counter registers to their initial values. A reset can only be
given when the Timer/Counter is not running (OFF).
Request
OV/UNFIF
ERRIF
CCxIF
DMA Request Sources
Acknowledge
DMA Controller writes to CNT
DMA Controller writes to PER
DMA Controller writes to PERBUF
N/A
DMA Controller access of CCx
DMA Controller access of CCxBUF
”DMA - Direct Memory Access Controller” on page
Table 14-2 on page 164
Comment
Input Capture operation
Output Compare operation
XMEGA A
lists the
49.
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