ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 395
ATxmega64A4U
Manufacturer Part Number
ATxmega64A4U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64A4U
Flash (kbytes)
64 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
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)
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
5
Output Compare Channels
16
Input Capture Channels
16
Pwm Channels
16
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega64A4U-AU
Manufacturer:
ON
Quantity:
29 000
Company:
Part Number:
ATxmega64A4U-U
Manufacturer:
ATMEL
Quantity:
74
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30.6
30.7
30.8
8331A–AVR–07/11
Window Mode
Input hysteresis
Propagation delay vs. Power consumption
Two Analog Comparators on the same port can be configured to work together in Window
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.
Figure 30-2. The Analog Comparators in Window Mode
Application software can select between no, low, and high hysteresis. Adding hysteresis can
avoid constant toggling of the output if the input signals are close to each other and some noise
exists in either of the signals or in the system.
It is possible to enable a high-speed mode to get the shortest possible propagation delay. This
mode consumes more power than the default low-power mode that has a longer propagation
delay.
Upper limit of window
Input signal
Lower limit of window
+
+
-
-
AC0
AC1
Atmel AVR XMEGA AU
sensitivity
Interrupt
control
Interrupts
Events
395
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