ATxmega64A4U Atmel Corporation, ATxmega64A4U Datasheet - Page 394
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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30.3
30.3.1
30.3.2
30.4
30.5
8331A–AVR–07/11
Input Sourcess
Signal Compare
Interrupts and Events
Pin Inputs
Internal Inputs
Figure 30-1. Analog Comparator overview
Each Analog Comparator has one positive and one negative input. Each input may be chosen
among a selection of the analog input pins, internal inputs and a V
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.
All analog input pins on the port can be selected as input to the Analog Comparator.
There are three internal inputs that are 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 are generated for the same condition as the interrupt, and at all times,
regardless of the interrupt being enabled or not.
• Output from the DAC (if available on the device).
• Bandgap reference voltage.
• Voltage scaler that can do a 64-level scaling of the internal V
Voltage
Scaler
Bandgap
DAC
Pin Input
Pin Input
Pin Input
Pin Input
ACnMUXCTRL
ACnCTRL
Enable
Enable
Hysteresis
Hysteresis
Atmel AVR XMEGA AU
Interrupt
Mode
WINCTRL
CC
voltage.
CC
scaled input. The digital
Sensititivity
Function
Interrupt
Window
Control
&
AC0OUT
AC1OUT
Interrupts
Events
394
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