ATxmega256A3 Atmel Corporation, ATxmega256A3 Datasheet - Page 334

• Manufacturer Part Number: ATxmega256A3
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3

• Flash (kbytes): 256 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 Speed: No
• Usb Interface: No
• 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): 4096
• 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

27.9.5
27.9.6
8077H–AVR–12/09
WINCTRL – Analog Comparator Window Function Control Register
STATUS – Analog Comparator Common Status Register
• Bits 5:0 - SCALEFAC[5:0]: Analog Comparator Input Voltage Scaling Factor
These bits define the scaling factor for the Vcc voltage
V
• Bits 7:5 - Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
• Bit 4 - WEN: Analog Comparator Window Enable
Setting this bit enables Window Mode for the two Analog Comparators on the same port.
• Bits 3:2 - WINTMODE[1:0]: Analog Comparator Window Interrupt Mode Settings
These bits configure the interrupt mode for Analog Comparator Window Mode according to
Table
Table 27-5.
• Bits 1:0 - WINTLVL[1:0]: Analog Comparator Window Interrupt Enable
These bits enable the Analog Comparator Window Mode Interrupt and select the interrupt level
as described in
page
• Bits 7:6 - WSTATE[1:0]: Analog Comparator Window Mode Current State
These bits show the current state of the signal if the Window Mode is enabled according to
Table
V
Bit
+0x06
Read/Write
Initial Value
Bit
+0x07
Read/Write
Initial Value
SCALE
SCALE
WINTMODE[1:0]
123. The enabled interrupt will trigger according to the WINTMODE setting.
27-5.
27-6.
, is:
=
00
01
10
11
V
------------------------------------------------------------ -
CC
R/W
R
7
0
7
0
⋅
-
Analog Comparator Window Mode Interrupt Settings
WSTATE[1:0]
(
SCALEFAC
Section 12. ”Interrupts and Programmable Multi-level Interrupt Controller” on
64
Group Configuration
R/W
R
6
0
6
0
-
+
OUTSIDE
BELOW
ABOVE
INSIDE
1
AC1STATE
)
R/W
R
5
0
5
0
-
AC0STATE
WEN
R/W
R/W
4
0
4
0
Interrupt on signal inside window
Interrupt on signal outside window
Description
Interrupt on signal above window
Interrupt on signal below window
R/W
R
3
WINTMODE[1:0]
0
3
0
-
F
. The input to the Analog Comparator,
R/W
R/W
WIF
2
0
2
0
AC1IF
R/W
R/W
1
0
1
0
WINTLVL[1:0]
XMEGA A
AC0IF
R/W
R/W
0
0
0
0
WINCTRL
STATUS
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