ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 352

• Manufacturer Part Number: ATxmega128B1
• Manufacturer: Atmel Corporation

Specifications of ATxmega128B1

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 53
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Segment Lcd: 160
• 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
• 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: 3
• Output Compare Channels: 10
• Input Capture Channels: 10
• Pwm Channels: 10
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

26.6
26.7
8291A–AVR–10/11
Window Mode
Input Hysteresis
(falling edge). Events are generated at all times for the same condition as the interrupt, regard-
less of whether the interrupt is enabled or not.
Two analog comparators on the same port can be configured to work together in window mode.
In this mode, a voltage range is defined, and the analog comparators give information about
whether an input signal is within this range or not.
Figure 26-2. The Analog comparators in window mode.
Application software can select between no-, low-, and high hysteresis for the comparison.
Applying a hysteresis will help prevent constant toggling of the output that can be caused by
noise when the input signals are close to each other.
Upper limit of window
Input signal
Lower limit of window
+
+
-
-
AC0
AC1
Atmel AVR XMEGA B
sensitivity
Interrupt
control
Interrupts
Events
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