ATxmega16D4 Atmel Corporation, ATxmega16D4 Datasheet - Page 251
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ATxmega16D4
Manufacturer Part Number
ATxmega16D4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega16D4
Flash (kbytes)
16 Kbytes
Pin Count
44
Max. Operating Frequency
32 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
34
Ext Interrupts
34
Usb Speed
No
Usb Interface
No
Spi
4
Twi (i2c)
2
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
12
Adc Speed (ksps)
200
Analog Comparators
2
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
2
Eeprom (bytes)
1024
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
4
Output Compare Channels
14
Input Capture Channels
14
Pwm Channels
14
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega16D4-AU
Manufacturer:
Atmel
Quantity:
438
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20 000
Company:
Part Number:
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Manufacturer:
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Company:
Part Number:
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Manufacturer:
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50
Part Number:
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ATMEL/爱特梅尔
Quantity:
20 000
21.3
21.3.1
21.3.2
21.4
21.5
21.6
8210B–AVR–04/10
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.
When the AC is enabled the muxes need some time to connect to the inputs configured. This
can result in unexpected transitions on the AC output during this time. In addition if the Voltage
scaler is used as a input on any of the two AC inside a ac system it has a startuptime that is
lagrer than the mux enable time(see ac mdac spesification). This startup time applies even if one
AC already uses the voltage scaler as input.
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.
• Bandgap reference voltage.
• Voltage scaler that can do a 64-level scaling of the internal VCC voltage.
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