參數資料
型號: UPD78218A
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁數: 29/66頁
文件大?。?/td> 510K
代理商: UPD78218A
29
μ
PD78217A, 78218A
Fig. 4-1 Servicing Example when an Interrupt Request Occurrence is Issued while an Interrupt is Serviced
Fig. 4-2 Servicing Example of Simultaneous Interrupt Requests
Main Routine
Vectored Interrupt Request a
(Low-Priority Level)
Vectored Interrupt Request e
(High-Priority Level)
Servicing of b
Servicing of c
Servicing of d
Servicing of a
Macro Service
Request b
Vectored
Interrupt
Request c
(High-Priority
Level)
Macro Service
Request d
Servicing of e
Macro Service
Request f
Servicing of f
Macro Service
Request h
Vectored Interrupt Request g (Low-Priority
Servicing of h
Servicing
of g
[Nesting 1]
[Nesting 2]
[Nesting 3]
Main Routine
[Nesting 1]
[Nesting 2]
Servicing of b
Servicing of d
Servicing of c
Servicing of a
Vectored Interrupt Request a
(Low-Priority Level)
Macro Service Request b
(High-Priority Level)
Macro Service Request c
(Low-Priority Level)
Vectored Interrupt Request d
(High-Priority Level)
Default Priority: a > b > c > d
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