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參數(shù)資料
| 型號： | UPD17233MC |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機的小型通用紅外遙控器 |
| 文件頁數(shù)： | 54/92頁 |
| 文件大?。?/td> | 378K |
| 代理商： | UPD17233MC |
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Data Sheet U14360EJ1V0DS00
μ
PD17230, 17231, 17232, 17233, 17234, 17235, 17236
54
7.3.2
Returning from interrupt processing routine
To return from an interrupt processing routine, use the RETI instruction.
Then the following processing is executed within an instruction cycle.
Loads contents of interrupt
stack register to PSWORD
Increments value of stack pointer by 1
Loads contents of stack addressed by
stack pointer to program counter
To enable an interrupt after the processing of an interrupt has been finished, the EI instruction must be
executed immediately before the RETI instruction.
Accepting the interrupt is enabled by the EI instruction after the instruction next to the EI instruction has
been executed. Therefore, the interrupt is not accepted between the EI and RETI instructions.
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