ATxmega64B3 Atmel Corporation, ATxmega64B3 Datasheet - Page 181

• Manufacturer Part Number: ATxmega64B3
• Manufacturer: Atmel Corporation

Specifications of ATxmega64B3

• Flash (kbytes): 64 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: 36
• Ext Interrupts: 36
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 100
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 2000
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: AES/DES
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• 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: 2
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

14.8
14.9
8291A–AVR–10/11
DMA Support
Timer/Counter Commands
Timer/counter underflow and compare interrupt flags can trigger a DMA transaction. The
acknowledge condition that clears the flag/request is listed in
Table 14-1.
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.
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
LUNFIF
HUNFIF
CCIF{D,C,B,A}
DMA request sources.
Acknowledge
DMAC writes to LCNT
DMAC writes to LPER
DMAC writes to HCNT
DMAC writes to HPER
DMAC access of
LCMP{D,C,B,A}
Atmel AVR XMEGA B
Table 14-1 on page
Comment
Output compare operation
181.
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