参数资料
型号: M32180F8TFP
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP240
封装: 32 X 32 MM, 0.50 MM PITCH, PLASTIC, QFP-240
文件页数: 15/139页
文件大小: 3774K
代理商: M32180F8TFP
4
4-22
EIT
32180 Group User’s Manual (Rev.1.0)
4.13 Precautions on EIT
The Address Exception (AE) requires caution because if one of the instructions that use “register indirect + register
update” addressing mode (following three) generates an address exception when it is executed, the values of the
registers to be automatically updated (Rsrc and Rsrc2) become undefined.
Except that the values of Rsrc and Rsrc2 become undefined, these instructions behave the same way as when
used in other addressing modes.
Applicable instructions
LD
Rdest, @Rsrc+
ST
Rsrc1, @-Rsrc2
ST
Rsrc1, @+Rsrc2
If the above case applies, consider the fact that the register values become undefined when you design the processing
to be performed after executing said instructions. (If an address exception occurs, it means that the system has some
fatal fault already existing in it. Therefore, address exceptions must be used on condition that control will not be returned
from the address exception handler to the program that was being executed when the exception occurred.)
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