參數(shù)資料
型號: M32000D3FP
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 66.6 MHz, RISC MICROCONTROLLER, PQFP100
封裝: 14 X 20 MM, 0.65 MM PITCH, PLASTIC, LQFP-100
文件頁數(shù): 108/155頁
文件大?。?/td> 1340K
代理商: M32000D3FP
4-20
M32000D3FP User's Manual
EIT
4.9 Interrupt processing
[EIT processing]
(1) SM, IE and C bits saving
The SM, IE and C bits are saved in the PSW register.
BSM
SM
BIE
IE
BC
C
(2) SM, IE and C bits updating
The SM, IE and C bits are updated.
SM
0
IE
0
C
0
(3) PC saving
The contents of the PC (always a word boundary value) is saved to the BPC.
(4) Branching to the EIT vector entry
Processing branches to address H’0000 0080 in user space. The M32000D3FP carries out hardware
pre-processing up to this point.
(5) Branching from the EIT vector entry to the EIT handler
The M32000D3FP executes the BRA instruction written in address H'0000 0080 of the EIT vector
entry, and branches to the top address of the EIT handler. At the top address of the EIT handler,
the BPC, the PSW register and any necessary general-purpose registers should be saved in the
stack.
However, it is not necessary to save to the stack if starting the M32000D3FP in slave mode.
(6) Returning from the EIT handler
At the end of the external interrupt EIT handler, return the general-purpose registers, the BPC and
the PSW register from the stack and execute the RTE instruction.
If starting the M32000D3FP in the slave mode, set the BPC and the PSW register, and execute
the RTE instruction.
When the RTE instruction is executed, hardware post-processing is automatically carried out.
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