ATxmega64A1 Atmel Corporation, ATxmega64A1 Datasheet - Page 330
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ATxmega64A1
Manufacturer Part Number
ATxmega64A1
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A1
Flash (kbytes)
64 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)
4
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A1-AU
Manufacturer:
Atmel
Quantity:
135
Company:
Part Number:
ATxmega64A1U-AU
Manufacturer:
ATMEL
Quantity:
953
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27.3
27.3.1
27.3.2
27.4
27.5
27.6
8077H–AVR–12/09
Input Channels
Start of Signal Compare
Generating Interrupts and Events
Window Mode
Pin Inputs
Internal Inputs
Each Analog Comparator has one positive and one negative input. Each input may be chosen
among a wide selection of input channels: the analog input pins, internal inputs and a scaled
inputs. The digital output from the Analog Comparator is one when the difference between the
positive and the negative input is positive, and zero when the difference is negative.
The analog input pins on the port can be selected as input to the Analog Comparator.
There are three Internal inputs that are directly available for the Analog Comparator:
In order to start a signal compare, the Analog Comparator must be configured with the preferred
properties and inputs, before the module is enabled to start comparing the two selected inputs.
The result of the comparison is continuous and available for application software and the Event
System.
The Analog Comparator can be configured to generate interrupts when the output toggles, when
output changes from zero to one (rising edge) or when the output changes from one to zero (fall-
ing edge). Events will be generated for the same condition as the interrupt, and at all times,
regardless of the interrupt being enabled or not.
Two Analog Comparators on the same analog port can be configured to work together in Win-
dow Mode. In this mode a voltage range may be defined, and the Analog Comparators may give
information about whether an input signal is within this range or not.
• Output from the DAC (If available on the specific device).
• Bandgap reference voltage.
• Voltage scaler that can do a 64-level scaling of the internal VCC voltage.
XMEGA A
330
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