ATxmega256A3B Atmel Corporation, ATxmega256A3B Datasheet - Page 45

• Manufacturer Part Number: ATxmega256A3B
• Manufacturer: Atmel Corporation

Specifications of ATxmega256A3B

• 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: 47
• Ext Interrupts: 49
• Usb Speed: No
• Usb Interface: No
• Spi: 8
• Twi (i2c): 2
• Uart: 6
• 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

4.20.8
8077H–AVR–12/09
AWEXLOCK – Advanced Waveform Extension Lock Register
tected by the Configuration Change Protection mechanism, for details refer to
”Configuration Change Protection” on page
• Bit 7:3 - Reserved
These bits are reserved and will always be read as zero. For compatibility with future devices,
always write these bits to zero when this register is written.
• Bit 2 - AWEXELOCK: Advanced Waveform Extension Lock for TCE0
Setting this bit will lock all registers in the AWEXE module for Timer/Counter E0 for further mod-
ifications. This bit is protected by the Configuration Change Protection mechanism, for details
refer to
• Bit 1 - Reserved
This bit is reserved and will always be read as zero. For compatibility with future devices, always
write this bit to zero when this register is written.
• Bit 0 - AWEXCLOCK: Advanced Waveform Extension Lock for TCC0
Setting this bit will lock all registers in the AWEXC module for Timer/Counter C0 for further mod-
ifications. This bit is protected by the Configuration Change Protection mechanism, for details
refer to
Bit
+0x09
Read/Write
Initial Value
Section 3.12 ”Configuration Change Protection” on page
Section 3.12 ”Configuration Change Protection” on page
—
R
7
0
—
R
6
0
—
R
5
0
—
R
4
0
12.
—
R
3
0
AWEXELOCK
R/W
2
0
12.
12.
—
1
R
0
AWEXCLOCK
R/W
0
0
XMEGA A
Section 3.12
AWEX_LOCK
45