ATxmega64D3 Atmel Corporation, ATxmega64D3 Datasheet - Page 225

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ATxmega64D3

Manufacturer Part Number
ATxmega64D3
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATxmega64D3

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
5
Twi (i2c)
2
Uart
3
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
200
Analog Comparators
2
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
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
18
Input Capture Channels
18
Pwm Channels
18
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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20.3
20.3.1
8210B–AVR–04/10
Input sources
Differential input
Figure 20-1. ADC overview
The input sources for the ADC are the analog voltage inputs that the ADC can measure and
convert. Four types of measurements can be selected:
The analog input pins are used for single ended and differential input, while the internal inputs
are directly available inside the device. Both PORTA and PORTB analog pins can then be used
as input for the ADC.
The MUX Control register select which input that is converted and the type of measurements in
one operation. The four types of measurements and their corresponding MUX selections are
shown in
The ADC itself is always differential, also for single ended inputs where the negative input for the
ADC will be connected to an fixed internal value.
When differential input is selected all analog input pins can be selected as positive input, and
analog input pins 0 to 3 can be selected as negative input. The ADC must be set in signed mode
when differential input is used.
• Differential input
• Differential input with gain
• Single ended input
• Internal input
Figure 20-2 on page 226
1-64 X
M U X selection
to
Figure 20-6 on page
Reference selection
C onfiguration
triggers
AD C
Event
228.
R esult R egister
XMEGA D
225

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