ATxmega128D4 Atmel Corporation, ATxmega128D4 Datasheet - Page 252

• Manufacturer Part Number: ATxmega128D4
• Manufacturer: Atmel Corporation

Specifications of ATxmega128D4

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 32 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 34
• Ext Interrupts: 34
• Usb Speed: No
• Usb Interface: No
• Spi: 4
• Twi (i2c): 2
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• Adc Resolution (bits): 12
• Adc Speed (ksps): 200
• Analog Comparators: 2
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• 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: 4
• Output Compare Channels: 14
• Input Capture Channels: 14
• Pwm Channels: 14
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

21.7
21.8
21.9
21.9.1
8210B–AVR–04/10
Input hysteresis
Power consumption vs. propagation delay
Register Description
ACnCTRL – Analog Comparator n Control Register
Figure 21-2. Analog Comparator Window Mode
Application software can select between no, low, and high hysteresis. Adding hysteresis can
avoid constant toggling of the output if the input signals are very close to each other and some
noise exists in either of the signals or in the system.
It is possible to enable High-speed mode to get the shortest possible propagation delay. This
mode consumes more power than the default Low-power mode that has a longer propagation
delay.
• Bits 7:6 - INTMODE[1:0]:Analog Comparator Interrupt Modes
These bits configure the interrupt mode for Analog Comparator n according to
Table 21-1.
Bit
+0x00 / +0x01
Read/Write
Initial Value
INTMODE[1:0]
U p p e r lim it o f w in d o w
In p u t s ig n a l
L o w e r lim it o f w in d o w
00
01
10
11
R/W
Analog Comparator n Interrupt Settings
7
0
INTMODE[1:0]
Group Configuration
R/W
6
0
BOTHEDGES
FALLING
RISING
-
R/W
5
0
INTLVL[1:0]
+
+
-
-
A C 0
A C 1
R/W
4
0
Comparator interrupt on output toggle
Comparator interrupt or event on rising output edge
Description
Reserved
Comparator interrupt or event on falling output edge
HSMODE
R/W
3
0
s e n s itiv ity
R/W
In te rru p t
2
0
HYSMODE[2:0]
c o n tro l
R/W
1
0
XMEGA D
In te rru p ts
Table
E v e n ts
ENABLE
R/W
0
0
21-1.
ACnCTRL
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