ATxmega32D4 Atmel Corporation, ATxmega32D4 Datasheet - Page 225
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATxmega32D4
Manufacturer Part Number
ATxmega32D4
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega32D4
Flash (kbytes)
32 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)
4
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega32D4-AU
Manufacturer:
Atmel
Quantity:
123
Part Number:
ATxmega32D4-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATxmega32D4-CU
Manufacturer:
Maxim
Quantity:
71
Company:
Part Number:
ATxmega32D4-MH
Manufacturer:
Atmel
Quantity:
1 910
Company:
Part Number:
ATxmega32D4-MH
Manufacturer:
Atmel
Quantity:
1 704
Part Number:
ATxmega32D4-MH
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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