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17
User’s Manual U12697EJ4V1UD
22.5 Operand Error Interrupt Acknowledgement Operation ..................................................... 378
22.6 Non-Maskable Interrupt Acknowledgment Operation ....................................................... 379
22.7 Maskable Interrupt Acknowledgment Operation ............................................................... 383
22.7.1
Vectored interrupt ...................................................................................................................... 385
22.7.2
Context switching ...................................................................................................................... 385
22.7.3
Maskable interrupt priority levels .............................................................................................. 387
22.8 Macro Service Function ....................................................................................................... 393
22.8.1
Outline of macro service function .............................................................................................. 393
22.8.2
Types of macro servicing .......................................................................................................... 393
22.8.3
Basic macro service operation .................................................................................................. 396
22.8.4
Operation at end of macro service ............................................................................................ 397
22.8.5
Macro service control registers ................................................................................................. 400
22.8.6
Macro service type A ................................................................................................................. 404
22.8.7
Macro service type B ................................................................................................................ 409
22.8.8
Macro service type C ................................................................................................................ 414
22.8.9
Counter mode ........................................................................................................................... 428
22.9 When Interrupt Requests and Macro Service Are Temporarily Held Pending ................ 430
22.10 Instructions Whose Execution Is Temporarily Suspended by Interrupt or Macro
Service ................................................................................................................................. 431
22.11 Interrupt and Macro Service Operation Timing ............................................................... 431
22.11.1 Interrupt acknowledge processing time .................................................................................... 432
22.11.2 Processing time of macro service ............................................................................................. 433
22.12 Restoring Interrupt Function to Initial State ..................................................................... 434
22.13 Cautions ............................................................................................................................... 435
CHAPTER 23 LOCAL BUS INTERFACE FUNCTIONS .................................................................. 437
23.1 External Memory Expansion Function ............................................................................... 437
23.2 Control Registers .................................................................................................................. 438
23.3 Memory Map for External Memory Expansion ................................................................... 440
23.4 Timing of External Memory Expansion Functions ............................................................ 445
23.5 Wait Functions ...................................................................................................................... 450
23.5.1
Address wait ............................................................................................................................. 450
23.5.2
Access wait ............................................................................................................................... 451
23.6 External Access Status Output Function ........................................................................... 459
23.6.1
Summary ................................................................................................................................... 459
23.6.2
Configuration of external access status output function ........................................................... 459
23.6.3
External access status enable register ..................................................................................... 460
23.6.4
External access status signal timing ......................................................................................... 460
23.6.5
EXA pin status in each mode .................................................................................................... 461
23.7 External Memory Connection Example .............................................................................. 462
CHAPTER 24 STANDBY FUNCTION ................................................................................................ 463
24.1 Configuration and Function ................................................................................................. 463
24.2 Control Registers .................................................................................................................. 465
24.3 HALT Mode ............................................................................................................................ 470
24.3.1
Settings and operating states of HALT mode ........................................................................... 470
24.3.2
Releasing HALT mode .............................................................................................................. 472
24.4 STOP Mode ............................................................................................................................ 480