
Preliminary User’s Manual U16892EJ1V0UD
13
17.3.2
Restore .........................................................................................................................................487
17.3.3
Priorities of maskable interrupts ...................................................................................................488
17.3.4
Interrupt control register (xxlCn) ...................................................................................................492
17.3.5
Interrupt mask registers 0, 1, 3 (IMR0, IMR1, IMR3) ....................................................................494
17.3.6
In-service priority register (ISPR)..................................................................................................495
17.3.7
ID flag ...........................................................................................................................................496
17.3.8
Watchdog timer mode register 1 (WDTM1) ..................................................................................497
17.4
External Interrupt Request Input Pins (NMI, INTP0 to INTP6) ............................................. 498
17.4.1
Noise elimination ..........................................................................................................................498
17.4.2
Edge detection..............................................................................................................................498
17.5
Software Exceptions................................................................................................................ 501
17.5.1
Operation......................................................................................................................................501
17.5.2
Restore .........................................................................................................................................502
17.5.3
EP flag ..........................................................................................................................................503
17.6
Exception Trap ......................................................................................................................... 504
17.6.1
Illegal opcode ...............................................................................................................................504
17.6.2
Debug trap....................................................................................................................................506
17.7
Multiple Interrupt Servicing Control ...................................................................................... 508
17.8
Interrupt Response Time......................................................................................................... 510
17.9
Periods in Which Interrupts Are Not Acknowledged by CPU ............................................. 511
17.10 Cautions.................................................................................................................................... 511
CHAPTER 18 KEY INTERRUPT FUNCTION ......................................................................................512
18.1
Function .................................................................................................................................... 512
18.2
Register..................................................................................................................................... 513
CHAPTER 19 STANDBY FUNCTION ...................................................................................................514
19.1
Overview ................................................................................................................................... 514
19.2
Registers................................................................................................................................... 517
19.3
HALT Mode ............................................................................................................................... 520
19.3.1
Setting and operation status .........................................................................................................520
19.3.2
Releasing HALT mode .................................................................................................................520
19.4
IDLE Mode................................................................................................................................. 522
19.4.1
Setting and operation status .........................................................................................................522
19.4.2
Releasing IDLE mode...................................................................................................................522
19.5
STOP Mode ............................................................................................................................... 524
19.5.1
Setting and operation status .........................................................................................................524
19.5.2
Releasing STOP mode .................................................................................................................524
19.5.3
Securing oscillation stabilization time when STOP mode is released...........................................526
19.6
Subclock Operation Mode....................................................................................................... 527
19.6.1
Setting and operation status .........................................................................................................527
19.6.2
Releasing subclock operation mode.............................................................................................527
19.7
Sub-IDLE Mode......................................................................................................................... 529
19.7.1
Setting and operation status .........................................................................................................529
19.7.2
Releasing sub-IDLE mode............................................................................................................529
CHAPTER 20 RESET FUNCTION ........................................................................................................531
20.1
Overview ................................................................................................................................... 531