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AT32AP7002-CTUT bảng dữ liệu(PDF) 21 Page - ATMEL Corporation

tên linh kiện AT32AP7002-CTUT
Giải thích chi tiết về linh kiện  AVR32 32-bit Microcontroller
PDF  896 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT32AP7002-CTUT bảng dữ liệu(HTML) 21 Page - ATMEL Corporation

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21
32054F–AVR32–09/09
AT32AP7002
6.2.7
Unimplemented instructions
The following instructions are unimplemented in AVR32 AP, and will cause an Unimplemented
Instruction Exception if executed:
•mems
•memc
•memt
6.2.8
Exceptions and Interrupts
AVR32 AP incorporates a powerful exception handling scheme. The different exception
sources, like Illegal Op-code and external interrupt requests, have different priority levels, ensur-
ing a well-defined behavior when multiple exceptions are received simultaneously. Additionally,
pending exceptions of a higher priority class may preempt handling of ongoing exceptions of a
lower priority class. Each priority class has dedicated registers to keep the return address and
status register thereby removing the need to perform time-consuming memory operations to
save this information.
There are four levels of external interrupt requests, all executing in their own context. The INT3
context provides dedicated shadow registers ensuring low latency for these interrupts. An inter-
rupt controller does the priority handling of the external interrupts and provides the autovector
offset to the CPU.
The addresses and priority of simultaneous events are shown in Table 6-2 on page 22.



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