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參數(shù)資料
| 型號： | UPD78322GJ-XXX-5BJ |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP74 |
| 封裝： | 20 X 20 MM, PLASTIC, QFP-74 |
| 文件頁數(shù)： | 39/90頁 |
| 文件大?。?/td> | 649K |
| 代理商： | UPD78322GJ-XXX-5BJ |
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42
PD78320, 78322
4.
INTERRUPT FUNCTIONS
4.1
OVERVIEW
In the
PD78322, various interrupt requests generated externally or from the on-chip peripheral hardware are handled
in the following three servicing modes.
Interrupt requests are classified into the following three groups.
Nonmaskable interrupt requests
Maskable interrupt requests
Interrupt requests by software
Figure 4-1 shows the maskable interrupt request servicing modes. Table 4-1 gives a listing of interrupt factors which can
be serviced.
Figure 4-1. Interrupt Request Servicing Modes
Handled by Vectored Interrupt Servicing
Interrupt Request
Handled by Context Switching
Handled by Macro Service
× × MK = 1 (Interrupt Masked)
Vectored Interrupt and Macro Service Reserved
× × MK = 0 (Interrupt Unmasked)
× × ISM = 0 (Vectored Interrupt Servicing Mode)
DI
Vectored Interrupt Servicing Reserved
EI
× × CSE = 0
Vectored Interrupt Servicing Executed
× × CSE = 1
Context Switching Executed
× × ISM = 1 (Macro Service Processing Mode)
Macro Service Processing Executed
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