ATxmega256A3B Atmel Corporation, ATxmega256A3B Datasheet - Page 436

• 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

8077H–AVR–12/09
7
8
9
System Clock and Clock options ......................................................... 76
Power Management and Sleep ............................................................. 95
Reset System ....................................................................................... 102
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.10
7.11
7.12
7.13
7.14
7.15
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
Features ..........................................................................................................65
Overview ..........................................................................................................65
Events ..............................................................................................................66
Event Routing Network ....................................................................................67
Event Timing ....................................................................................................69
Filtering ............................................................................................................69
Quadrature Decoder ........................................................................................69
Register Description ........................................................................................71
Register Summary ...........................................................................................75
Features ..........................................................................................................76
Overview ..........................................................................................................76
Clock Distribution .............................................................................................77
Clock Sources .................................................................................................78
System Clock Selection and Prescalers ..........................................................80
PLL with 1-31x Multiplication Factor ................................................................81
DFLL 2 MHz and DFLL 32 MHz ......................................................................81
External Clock Source Failure Monitor ............................................................82
Register Description - Clock ............................................................................84
Register Description - Oscillator ......................................................................87
Register Description - DFLL32M/DFLL2M ......................................................92
Register Summary - Clock ...............................................................................94
Register Summary - Oscillator .........................................................................94
Register Summary - DFLL32M/DFLL2M .........................................................94
Crystal Oscillator Failure Interrupt Vector Summary .......................................94
Features ..........................................................................................................95
Overview ..........................................................................................................95
Sleep Modes ....................................................................................................95
Power Reduction Registers .............................................................................97
Register Description – Sleep ...........................................................................97
Register Description – Power Reduction .........................................................98
Register Summary - Sleep ............................................................................101
Register Summary - Power Reduction ..........................................................101
XMEGA A
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