ATxmega256A3 Atmel Corporation, ATxmega256A3 Datasheet - Page 437

• 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

8077H–AVR–12/09
10 Battery Backup System ....................................................................... 111
11 WDT – Watchdog Timer ....................................................................... 117
12 Interrupts and Programmable Multi-level Interrupt Controller ........ 123
13 I/O Ports ................................................................................................ 129
9.1
9.2
9.3
9.4
9.5
9.6
10.1
10.2
10.3
10.4
10.5
10.6
10.7
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
12.1
12.2
12.3
12.4
12.5
12.6
12.7
12.8
12.9
13.1
Features ........................................................................................................102
Overview ........................................................................................................102
Reset Sequence ............................................................................................104
Reset Sources ...............................................................................................104
Register Description ......................................................................................109
Register Summary .........................................................................................110
Features ........................................................................................................111
Overview ........................................................................................................111
Battery Backup Module .................................................................................112
Main Power Loss ...........................................................................................113
Main Reset and Start-up Sequence ..............................................................113
Register Description ......................................................................................114
Register Summary .........................................................................................116
Features ........................................................................................................117
Overview ........................................................................................................117
Normal Mode Operation ................................................................................117
Window Mode Operation ...............................................................................118
Watchdog Timer clock ...................................................................................118
Configuration Protection and Lock ................................................................118
Registers Description ....................................................................................119
Register Summary .........................................................................................122
Features ........................................................................................................123
Overview ........................................................................................................123
Operation .......................................................................................................123
Interrupts .......................................................................................................124
Interrupt level .................................................................................................125
Interrupt priority .............................................................................................125
Moving Interrupts Between Application and Boot Section .............................127
Register Description ......................................................................................127
Register Summary .........................................................................................128
Features ........................................................................................................129
XMEGA A
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