ATxmega64D4 Atmel Corporation, ATxmega64D4 Datasheet - Page 226
ATxmega64D4
Manufacturer Part Number
ATxmega64D4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega64D4
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 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)
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
4
Output Compare Channels
14
Input Capture Channels
14
Pwm Channels
14
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATxmega64D4-AU
Manufacturer:
AT
Quantity:
20 000
Company:
Part Number:
ATxmega64D4-H
Manufacturer:
ATMEL
Quantity:
5
Company:
Part Number:
ATxmega64D4-U
Manufacturer:
ATMEL
Quantity:
86
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20.3.2
20.3.3
8210B–AVR–04/10
Differential input with gain
Single ended input
Figure 20-2. Differential measurement
When differential input with gain is selected all analog input pins can be selected as positive
input, and analog input pins 4 to 7 can be selected as negative input. When the gain stage is
used, the differential analog input is first sampled and amplified by the gain stage before the
result is fed into the ADC. The ADC must be set in signed mode when differential input with gain
is used.
The gain is selectable to 1x, 2x, 4x, 8x, 16x, 32x and 64x gain. In addition a 1/2x (divide by two)
setting is available, enabling measurement of differential input of up to 2x the reference voltage.
Figure 20-3. Differential measurement with gain
For single ended measurements all analog input pins can be used as input. Single ended mea-
surements can be done in both signed and unsigned mode.
ADC14
ADC15
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
...
...
ADC14
ADC15
ADC0
ADC1
ADC2
ADC3
ADC0
ADC1
ADC2
ADC3
...
...
1-64 X
+
-
ADC
+
-
ADC
XMEGA D
226
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