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型號：	HD6433045
廠商：	Hitachi,Ltd.
英文描述：	Multipole Connector; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No RoHS Compliant: No
中文描述：	日立單片機
文件頁數：	117/867頁
文件大小：	2771K
代理商：	HD6433045

Figure 5-5 shows the transitions among the above states.

Figure 5-5 Interrupt Masking State Transitions (Example)

Figure 5-6 is a flowchart showing how interrupts are accepted when UE = 0.

If an interrupt condition occurs and the corresponding interrupt enable bit is set to 1, an

interrupt request is sent to the interrupt controller.

When the interrupt controller receives one or more interrupt requests, it selects the highest-

priority request, following the IPR interrupt priority settings, and holds other requests

pending. If two or more interrupts with the same IPR setting are requested simultaneously, the

interrupt controller follows the priority order shown in table 5-3.

The interrupt controller checks the I bit. If the I bit is cleared to 0, the selected interrupt

request is accepted regardless of its IPR setting, and regardless of the UI bit. If the I bit is set

to 1 and the UI bit is cleared to 0, only NMI and interrupts with priority level 1 are accepted;

interrupt requests with priority level 0 are held pending. If the I bit and UI bit are both set to

1, only NMI is accepted; all other interrupt requests are held pending.

When an interrupt request is accepted, interrupt exception handling starts after execution of

the current instruction has been completed.

In interrupt exception handling, PC and CCR are saved to the stack area. The PC value that is

saved indicates the address of the first instruction that will be executed after the return from

the interrupt service routine.

The I and UI bits are set to 1 in CCR, masking all interrupts except NMI.

The vector address of the accepted interrupt is generated, and the interrupt service routine

starts executing from the address indicated by the contents of the vector address.

All interrupts are

Only NMI, IRQ , and

IRQ are unmasked

Exception handling,

or I 1, UI 1

All interrupts are

masked except NMI

Exception handling,

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相關代理商/技術參數	參數描述
HD6433045F	制造商:未知廠家制造商全稱:未知廠家功能描述:32-Bit Microcontroller
HD6433045TF	制造商:未知廠家制造商全稱:未知廠家功能描述:32-Bit Microcontroller
HD6433045VF	制造商:未知廠家制造商全稱:未知廠家功能描述:32-Bit Microcontroller
HD6433045VTF	制造商:未知廠家制造商全稱:未知廠家功能描述:32-Bit Microcontroller
HD6433047	制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Hitachi Single-Chip Microcomputer

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