AT32UC3A1256AU Atmel Corporation, AT32UC3A1256AU Datasheet - Page 30
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AT32UC3A1256AU
Manufacturer Part Number
AT32UC3A1256AU
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(98 pages)
2.AT32UC3A0128.pdf
(826 pages)
3.AT32UC3A0128.pdf
(377 pages)
4.AT32UC3A0128.pdf
(33 pages)
5.AT32UC3A0128.pdf
(159 pages)
6.AT32UC3A0128AU.pdf
(2 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
3.9.1.6
3.9.1.7
3.9.1.8
32002F–03/2010
Bus Error Exception on Instruction Fetch
NMI Exception
INT3 Exception
caused the exception. The exception handler is responsible for performing the appropriate
action.
The Bus Error on Instruction Fetch exception is generated when the data bus detects an error
condition. This exception is caused by events related to the instruction stream. Therefore, exe-
cution can be restarted in a safe way after this exception, assuming that the condition that
caused the bus error is dealt with.
The NMI exception is generated when the NMI input line to the core is asserted. The NMI excep-
tion can not be masked by the SR[GM] bit. However, the core ignores the NMI input line when
processing an NMI Exception (the SR[M2:M0] bits are B’111). This guarantees serial execution
of NMI Exceptions, and simplifies the NMI hardware and software mechanisms.
Since the NMI exception is unrelated to the instruction stream, the instructions in the pipeline are
allowed to complete. After finishing the NMI exception routine, execution should continue at the
instruction following the last completed instruction in the instruction stream.
The INT3 exception is generated when the INT3 input line to the core is asserted. The INT3
exception can be masked by the SR[GM] bit, and the SR[I3M] bit. Hardware automatically sets
the SR[I3M] bit when accepting an INT3 exception, inhibiting new INT3 requests when process-
ing an INT3 request.
The INT3 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.
*(--SP
*(--SP
SR[M2:M0] = B’110;
SR[EM] = 1;
SR[GM] = 1;
PC = EVBA | 0x08;
BEAR = failing address
*(--SP
*(--SP
SR[M2:M0] = B’110;
SR[EM] = 1;
SR[GM] = 1;
PC = EVBA | 0x0C;
*(--SP
*(--SP
SR[M2:M0] = B’111;
SR[EM] = 1;
SR[GM] = 1;
PC = EVBA | 0x10;
SYS
SYS
SYS
SYS
SYS
SYS
) = PC of first non-issued instruction;
) = SR;
) = PC of first non-issued instruction;
) = SR;
) = PC of first noncompleted instruction;
) = SR;
AVR32
30