UPD78320GJ-5BJ NEC, UPD78320GJ-5BJ Datasheet - Page 42
UPD78320GJ-5BJ
Manufacturer Part Number
UPD78320GJ-5BJ
Description
16/8-BIT SINGLE-CHIP MICROCONTROLLER
Manufacturer
NEC
Datasheet
1.UPD78320GJ-5BJ.pdf
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42
4. INTERRUPT FUNCTIONS
4.1
in the following three servicing modes.
be serviced.
In the PD78322, various interrupt requests generated externally or from the on-chip peripheral hardware are handled
Interrupt requests are classified into the following three groups.
Figure 4-1 shows the maskable interrupt request servicing modes. Table 4-1 gives a listing of interrupt factors which can
OVERVIEW
• Nonmaskable interrupt requests
• Maskable interrupt requests
• Interrupt requests by software
Interrupt Request
Vectored Interrupt and Macro Service Reserved
MK = 1 (Interrupt Masked)
MK = 0 (Interrupt Unmasked)
Figure 4-1. Interrupt Request Servicing Modes
Macro Service Processing Executed
ISM = 0 (Vectored Interrupt Servicing Mode)
ISM = 1 (Macro Service Processing Mode)
DI
EI
CSE = 0
CSE = 1
Vectored Interrupt Servicing Reserved
Vectored Interrupt Servicing Executed
Context Switching Executed
Handled by Vectored Interrupt Servicing
Handled by Context Switching
Handled by Macro Service
PD78320, 78322
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