AT32UC3A1256AU Atmel Corporation, AT32UC3A1256AU Datasheet - Page 72

• Manufacturer Part Number: AT32UC3A1256AU
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A1256AU

• Flash (kbytes): 256 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 69
• Ext Interrupts: 69
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 1
• Uart: 4
• Ssc: 1
• Ethernet: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 16
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Operating Voltage (vcc): 3.0-3.6 or (1.65-1.95+3.0-3.6)
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 10
• Output Compare Channels: 16
• Input Capture Channels: 6
• Pwm Channels: 13
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8.3.1.10
72
AVR32
INT1 Exception
The INT1 exception is generated when the INT1 input line to the core is asserted. The INT1
exception can be masked by the SR[GM] bit, and the SR[I1M] bit. Hardware automatically sets
the SR[I1M] bit when accepting an INT1 exception, inhibiting new INT1 requests when process-
ing an INT1 request.
The INT1 Exception handler address is calculated by adding EVBA to an interrupt vector offset
specified by an interrupt controller outside the core. The interrupt controller is responsible for
providing the correct offset.
Since the INT1 exception is unrelated to the instruction stream, the instructions in the pipeline
are allowed to complete. After finishing the INT1 exception routine, execution should continue at
the instruction following the last completed instruction in the instruction stream.
*(--SP
*(--SP
SR[R] = 0;
SR[J] = 0;
SR[M2:M0] = B’100;
SR[I2M] = 1;
SR[I1M] = 1;
SR[I0M] = 1;
PC = EVBA + INTERRUPT_VECTOR_OFFSET;
*(--SP
*(--SP
*(--SP
*(--SP
*(--SP
*(--SP
*(--SP
*(--SP
SR[R] = 0;
SR[J] = 0;
SR[M2:M0] = B’011;
SR[I1M] = 1;
SR[I0M] = 1;
PC = EVBA + INTERRUPT_VECTOR_OFFSET;
SYS
SYS
SYS
SYS
SYS
SYS
SYS
SYS
SYS
SYS
) = PC of first noncompleted instruction;
) = SR;
) = R8;
) = R9;
) = R10;
) = R11;
) = R12;
) = LR;
) = PC of first noncompleted instruction;
) = SR;
32000D–04/2011