ATxmega192A3U Atmel Corporation, ATxmega192A3U Datasheet - Page 168
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ATxmega192A3U
Manufacturer Part Number
ATxmega192A3U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega192A3U
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 Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
10
Twi (i2c)
2
Uart
7
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
12
Adc Speed (ksps)
2000
Analog Comparators
4
Resistive Touch Screen
No
Dac Channels
2
Dac Resolution (bits)
12
Temp. Sensor
Yes
Crypto Engine
AES/DES
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
7
Output Compare Channels
22
Input Capture Channels
22
Pwm Channels
22
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATxmega192A3U-AU
Manufacturer:
MSDS
Quantity:
124
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14.6
8331A–AVR–07/11
Counter Operation
buffer register and cleared on an UPDATE condition. This is shown for a compare register in
Figure 14-4 on page
Figure 14-4. Period and compare double buffering
When the CC channels are used for a capture operation, a similar double buffering mechanism
is used, but in this case the buffer valid flag is set on the capture event, as shown in
For capture, the buffer register and the corresponding CCx register act like a FIFO. When the
CC register is empty or read, any content in the buffer register is passed to the CC register. The
buffer valid flag is passed to set the CCx interrupt flag (IF) and generate the optional interrupt.
Figure 14-5. Capture double buffering.
Both the CCx and CCxBUF registers are available as an I/O register. This allows initialization
and bypassing of the buffer register and the double buffering function.
Depending on the mode of operation, the counter is cleared, reloaded, incremented, or decre-
mented at each timer/counter clock input.
UPDATE
"capture"
"INT/DMA
request"
168.
BV
IF
BV
EN
EN
CCxBUF
CCx
CNT
EN
EN
CNT
Atmel AVR XMEGA AU
CCxBUF
=
CCx
"write enable"
"match"
"data"
Figure
14-5.
168
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