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User’s Manual U12697EJ3V0UM
22.4.2 BRKCS instruction software interrupt (software context switching)
acknowledgment operation ......................................................................................................... 378
22.5 Operand Error Interrupt Acknowledgment Operation ....................................................... 379
22.6 Non-Maskable Interrupt Acknowledgment Operation ....................................................... 380
22.7 Maskable Interrupt Acknowledgment Operation ............................................................... 384
22.7.1 Vectored interrupt ........................................................................................................................ 386
22.7.2 Context switching ........................................................................................................................ 386
22.7.3 Maskable interrupt priority levels ................................................................................................ 388
22.8 Macro Service Function ....................................................................................................... 394
22.8.1 Outline of macro service function ................................................................................................ 394
22.8.2 Types of macro service ............................................................................................................... 394
22.8.3 Basic macro service operation .................................................................................................... 397
22.8.4 Operation at end of macro service .............................................................................................. 398
22.8.5 Macro service control registers ................................................................................................... 401
22.8.6 Macro service type A ................................................................................................................... 405
22.8.7 Macro service type B .................................................................................................................. 410
22.8.8 Macro service type C .................................................................................................................. 415
22.8.9 Counter mode ............................................................................................................................. 429
22.9 When Interrupt Requests and Macro Service Are Temporarily Held Pending ................ 431
22.10 Instructions Whose Execution Is Temporarily Suspended by an Interrupt or Macro
Service ................................................................................................................................... 432
22.11 Interrupt and Macro Service Operation Timing ................................................................. 432
22.11.1 Interrupt acknowledge processing time .................................................................................... 433
22.11.2 Processing time of macro service ............................................................................................ 434
22.12 Restoring Interrupt Function to Initial State ...................................................................... 435
22.13 Cautions ................................................................................................................................ 436
CHAPTER 23 LOCAL BUS INTERFACE FUNCTIONS .................................................................. 438
23.1 External Memory Expansion Function ................................................................................ 438
23.2 Control Registers .................................................................................................................. 439
23.3 Memory Map for External Memory Expansion .................................................................... 441
23.4 Timing of External Memory Expansion Functions ............................................................. 446
23.5 Wait Functions ....................................................................................................................... 451
23.5.1 Address wait ................................................................................................................................ 451
23.5.2 Access wait ................................................................................................................................. 454
23.6 External Access Status Output Function ............................................................................ 460
23.6.1 Summary ..................................................................................................................................... 460
23.6.2 Configuration of external access status output function ............................................................. 460
23.6.3 External access status enable register ....................................................................................... 461
23.6.4 External access status signal timing ........................................................................................... 461
23.6.5 EXA pin status during each mode ............................................................................................... 462
23.7 External Memory Connection Example ............................................................................... 463
CHAPTER 24 STANDBY FUNCTION .................................................................................................... 464
24.1 Configuration and Function ................................................................................................. 464
24.2 Control Registers .................................................................................................................. 466
24.3 HALT Mode ............................................................................................................................. 472
