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參數資料
| 型號： | HD404654H |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-Bit Single-Chip Microcomputer |
| 中文描述： | 4位單片機 |
| 文件頁數： | 14/109頁 |
| 文件大?。?/td> | 430K |
| 代理商： | HD404654H |
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HD404654 Series
14
A block diagram of the interrupt control circuit is shown in figure 8, interrupt priorities and vector
addresses are listed in table 2, and interrupt processing conditions for the 11 interrupt sources are listed in
table 3.
An interrupt request occurs when the IF is set to 1 and the IM is set to 0. If the IE is 1 at that point, the
interrupt is processed. A priority programmable logic array (PLA) generates the vector address assigned to
that interrupt source.
The interrupt processing sequence is shown in figure 9 and an interrupt processing flowchart is shown in
figure 10. After an interrupt is acknowledged, the previous instruction is completed in the first cycle. The
IE is reset in the second cycle, the carry, status, and program counter values are pushed onto the stack
during the second and third cycles, and the program jumps to the vector address to execute the instruction
in the third cycle.
Program the JMPL instruction at each vector address, to branch the program to the start address of the
interrupt program, and reset the IF by a software instruction within the interrupt program.
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PDF描述 |
|---|---|
| HD404654S | 4-Bit Single-Chip Microcomputer |
| HD4074654 | 4-Bit Single-Chip Microcomputer |
| HD4074654H | 4-Bit Single-Chip Microcomputer |
| HD4074654S | 4-Bit Single-Chip Microcomputer |
| HD4046612 | Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit(帶雙音多頻電路的低電壓微計算機) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HD404654S | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer |
| HD404654SERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| HD4046612 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit |
| HD4046612H | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit |
| HD404668 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit |
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