ATxmega128B1 Atmel Corporation, ATxmega128B1 Datasheet - Page 117

• 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

10.7.3
8291A–AVR–10/11
STATUS – Status register
In order to change these bits, the WCEN bit must be written to one at the same time. These bits
are protected by the configuration change protection mechanism. For a detailed description,
refer to
Table 10-2.
• Bit 1 – WEN: Window Mode Enable
This bit enables the window mode. In order to change this bit, the WCEN bit in
Window Mode Control register” on page 116
protected by the configuration change protection mechanism. For a detailed description, refer to
”Configuration Change Protection” on page
• Bit 0 – WCEN: Window Mode Change Enable
This bit enables the ability to change the configuration of the
register” on page
the same time for the changes to take effect. This bit is protected by the configuration change
protection mechanism, but not protected by the WDT lock fuse.
• Bit 7:1 – 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
+0x02
Read/Write
Initial Value
WPER[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
”Configuration Change Protection” on page
Watchdog closed window periods
R
7
–
0
116. When writing a new value to this register, this bit must be written to one at
R
6
–
0
Group Configuration
R
5
–
0
128CLK
256CLK
512CLK
1KCLK
2KCLK
4KCLK
8KCLK
16CLK
32CLK
64CLK
8CLK
R
4
–
0
12.
must be written to one at the same time. This bit is
3
–
R
0
12.
Atmel AVR XMEGA B
”WINCTRL – Window Mode Control
2
–
R
0
Typical Closed Window Periods
R
1
–
0
Reserved
Reserved
Reserved
Reserved
Reserved
0.128s
0.256s
0.512s
16ms
32ms
64ms
8ms
1.0s
2.0s
4.0s
8.0s
SYNCBUSY
R
0
0
”WINCTRL –
STATUS
117