ATxmega128A3U Atmel Corporation, ATxmega128A3U Datasheet - Page 122
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ATxmega128A3U
Manufacturer Part Number
ATxmega128A3U
Description
Manufacturer
Atmel Corporation
Specifications of ATxmega128A3U
Flash (kbytes)
128 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)
8
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:
ATxmega128A3U-AU
Manufacturer:
ATMEL
Quantity:
39
Company:
Part Number:
ATxmega128A3U-MH
Manufacturer:
ATMEL
Quantity:
1
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10.5.2
8331A–AVR–07/11
Main Power Restore and Start-up Sequence
At every startup after main power is restored, the software should:
1. Control the main reset source to determine that a POR or BOD took place.
2. Check for power on the V
3. Read the power supervisor flags to determine further software action:
a. If all power supervision flags are cleared, the battery backup system runs as nor-
b. If any power supervision flags are set, it indicates the battery backup system has
mal. The software should enable access to the battery backup system and check
the crystal oscillator failure flag. If the flag is set, the software should assume that
the RTC counter value is invalid and take appropriate action.
lost power sometime during the period when the rest of the device was unpower-
erd. Software should assume that the configuration and RTC value are invalid and
take appropriate action.
BAT
pin by reading the BBPWR flag.
Atmel AVR XMEGA AU
122
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