ATxmega192D3 Atmel Corporation, ATxmega192D3 Datasheet - Page 232
ATxmega192D3
Manufacturer Part Number
ATxmega192D3
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega192D3
Flash (kbytes)
192 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)
16
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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Part Number
Manufacturer
Quantity
Price
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Manufacturer:
CYPRESS
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101
Company:
Part Number:
ATxmega192D3-AU
Manufacturer:
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70
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Part Number:
ATxmega192D3-H
Manufacturer:
SQ
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719
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Part Number:
ATxmega192D3-MH
Manufacturer:
Atmel
Quantity:
565
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20.8.2
8210B–AVR–04/10
Single conversion with gain
The analog input source is sampled in the first half of the first cycle, and the sample time is one-
half ADC clock period. Using a faster or slower ADC clock and sample rate will affect the sample
time.
The Most Significant Bit (MSB) of the result is converted first, and the rest of the bits are con-
verted during the next 3 (for 8-bit results) or 5 (for 12-bit results) ADC clock cycles. Converting
one bit takes a half ADC clock period. During the last cycle the result is prepared before the
Interrupt Flag is set. The result is available in the Result Register for readout.
Figure 20-13. ADC timing for one single conversion without gain
Figure 20-14 on page 232
version with various gain settings. As seen in the
placed prior to the actual ADC. This means that the gainstage will sample and amplify the ana-
log input source before the ADC samples an converts the amplified analog value.
The gain stage will require between one and three ADC clock cycles in order to amplify the input
source. This will add one to three ADC clock cycles to the total propagation delay compared to
single conversion without gain. The sample time for the gain stage is a half ADC clock cycle.
Figure 20-14. ADC timing for one single conversion with 2x or 4x gain
GAINSTAGE AMPLIFY
GAINSTAGE SAMPLE
CONVERTING BIT
CONVERTING BIT
ADC SAMPLE
ADC SAMPLE
CLK
START
CLK
START
ADC
ADC
IF
IF
1
1
MSB
to
10
Figure 20-16 on page
2
MSB
2
9
10
3
8
9
3
7
8
4
6
7
4
233show the ADC timing for one single con-
”Overview” on page 224
5
6
5
4
5
5
4
3
6
3
2
6
2
1
7
1
LSB
XMEGA D
LSB
the gain stage is
7
8
8
9
232
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