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): 106/155頁
文件大?。?/td> 1340K
代理商: M32000D3FP
4-18
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) are saved to the BPC.
(4) Branching to the EIT vector entry
Processing branches to address H’0000 0010 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 0010 of the EIT vector
entry, and branches to the top address of the EIT handler.
The SBI is used in the case that some problem has already occurred until the system when the
interrupt is detected. Use of the SBI is under the condition that after SBI handler processing,
control does not return to the original program that was executing when the SBI occurred.
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