upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 133

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(1) To acknowledge maskable interrupts in service program
servicing control. To set a priority level, write values to the xxPRn0 to xxPRn2 bits of the interrupt request control
register (xxICn) corresponding to each maskable interrupt request. At reset, the interrupt request is masked by the
xxMKn bit, and the priority level is set to 7 by the xxPRn0 to xxPRn2 bits.
(2) To generate exception in service program
Priorities 0 to 7 (0 is the highest) can be programmed for each maskable interrupt request for multiple interrupt
Remark
• Save EIPC to memory or register
• Save EIPSW to memory or register
• EI instruction (enables interrupt acknowledgement)
• DI instruction (disables interrupt acknowledgement)
• Restore saved value to EIPSW
• Restore saved value to EIPC
• RETI instruction
• Save EIPC to memory or register
• Save EIPSW to memory or register
• EI instruction (enables interrupt acknowledgement)
• TRAP instruction
• Illegal opcode
• Restore saved value to EIPSW
• Restore saved value to EIPC
• RETI instruction
Service program of maskable interrupt or exception
Service program of maskable interrupt or exception
xx: Identification name of each peripheral unit (refer to Table 5-2)
n:
...
...
...
...
...
...
...
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Number of each peripheral unit (refer to Table 5-2)
CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION
User’s Manual U12768EJ4V1UD
← Acknowledgement of interrupt such as INTP
← Acknowledgement of exception such as TRAP
← Acknowledgement of exception such as illegal
input.
instruction.
opcode.
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