ATxmega64A3 Atmel Corporation, ATxmega64A3 Datasheet - Page 151

• Manufacturer Part Number: ATxmega64A3
• Manufacturer: Atmel Corporation

Specifications of ATxmega64A3

• 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: 50
• Ext Interrupts: 50
• Usb Speed: No
• Usb Interface: No
• Spi: 10
• Twi (i2c): 2
• Uart: 7
• 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): 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: 7
• Output Compare Channels: 22
• Input Capture Channels: 22
• Pwm Channels: 22
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

14.2.1
14.3
8077H–AVR–12/09
Block Diagram
Definitions
The following definitions are used extensively throughout the Timer/Counter documentation:
Table 14-1.
In general the term Timer is used when the Timer/Counter clock control is handled by an internal
source and the term Counter is used if the clock is given externally (from an event).
Figure 14-2 on page 152
extensions.
Name
BOTTOM
MAX
TOP
UPDATE
Timer/Counter definitions
Description
The Counter reaches the BOTTOM when it becomes zero.
The Counter reaches MAXimum when it becomes all ones.
The Counter reaches the TOP when it becomes equal to the highest value in the
count sequence. The TOP value can be equal to the period (PER) or the Compare
Channel A (CCA) register setting. This is selected by the Waveform Generator Mode.
The Timer/Counter signalizes an update when it reaches BOTTOM or TOP
dependent of the Waveform Generator Mode.
shows a detailed block diagram of the Timer/Counter without the
XMEGA A
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