ATxmega256A3B Atmel Corporation, ATxmega256A3B Datasheet - Page 439

• 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
16 Hi-Res - High Resolution Extension ................................................... 188
17 RTC - Real Time Counter ..................................................................... 190
18 RTC32 - 32-bit Real Time Counter ...................................................... 197
19 TWI – Two Wire Interface .................................................................... 205
15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
16.1
16.2
16.3
16.4
17.1
17.2
17.3
17.4
17.5
18.1
18.2
18.3
18.4
18.5
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
Features ........................................................................................................176
Overview ........................................................................................................176
Port Override .................................................................................................177
Dead Time Insertion ......................................................................................179
Pattern Generation ........................................................................................180
Fault Protection .............................................................................................181
Register Description ......................................................................................182
Register Summary .........................................................................................187
Features ........................................................................................................188
Overview ........................................................................................................188
Register Description ......................................................................................189
Register Summary .........................................................................................189
Features ........................................................................................................190
Overview ........................................................................................................190
Register Description ......................................................................................191
Register Summary .........................................................................................196
Interrupt Vector Summary .............................................................................196
Features ........................................................................................................197
Overview ........................................................................................................197
Register Description ......................................................................................198
Register Summary .........................................................................................204
Interrupt Vector Summary .............................................................................204
Features ........................................................................................................205
Overview ........................................................................................................205
General TWI Bus Concepts ...........................................................................206
TWI Bus State Logic ......................................................................................212
TWI Master Operation ...................................................................................213
TWI Slave Operation .....................................................................................215
Enabling External Driver Interface .................................................................216
Register Description - TWI ............................................................................217
Register Description - TWI Master ................................................................217
XMEGA A
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