ATxmega128A3U Atmel Corporation, ATxmega128A3U Datasheet - Page 425

• Manufacturer Part Number: ATxmega128A3U
• 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

8331A–AVR–07/11
• Bit 2:0
These bits specify the number of IDLE bits of guard time that are inserted in between PDI recep-
tion and transmission direction changes. The default guard time is 128 IDLE bits, and the
available settings are shown in
tion, the guard time should be set to the lowest safe configuration accepted. No guard time is
inserted when switching from TX to RX mode.
Table 32-1.
–
GUARDTIME[2:0]: Guard Time
Guard time settings.
GUARDTIME
000
001
010
011
100
101
110
111
Table 32-1 on page
Atmel AVR XMEGA AU
425. In order to speed up the communica-
Number of IDLE Bits
128
64
32
16
8
4
2
2
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