NEC 78K0 User Manual page 14

CHAPTER 15 INTERRUPT FUNCTIONS ............................................................................................ 313
15.1 Interrupt Function Types......................................................................................................... 313
15.2 Interrupt Sources and Configuration ..................................................................................... 313
15.3 Registers Controlling Interrupt Functions ............................................................................ 316
15.4 Interrupt Servicing Operations ............................................................................................... 323
15.4.1 Maskable interrupt request acknowledgment................................................................................323
15.4.2 Software interrupt request acknowledgment.................................................................................325
15.4.3 Multiple interrupt servicing ............................................................................................................326
15.4.4 Interrupt request hold....................................................................................................................329
CHAPTER 16 KEY INTERRUPT FUNCTION ..................................................................................... 330
16.1 Functions of Key Interrupt ...................................................................................................... 330
16.2 Configuration of Key Interrupt................................................................................................ 330
16.3 Register Controlling Key Interrupt ......................................................................................... 331
CHAPTER 17 STANDBY FUNCTION .................................................................................................. 332
17.1 Standby Function and Configuration..................................................................................... 332
17.1.1 Standby function ...........................................................................................................................332
17.1.2 Registers controlling standby function ..........................................................................................334
17.2 Standby Function Operation................................................................................................... 336
17.2.1 HALT mode...................................................................................................................................336
17.2.2 STOP mode ..................................................................................................................................341
CHAPTER 18 RESET FUNCTION........................................................................................................ 345
18.1 Register for Confirming Reset Source................................................................................... 351
CHAPTER 19 CLOCK MONITOR ........................................................................................................ 352
19.1 Functions of Clock Monitor..................................................................................................... 352
19.2 Configuration of Clock Monitor .............................................................................................. 352
19.3 Register Controlling Clock Monitor........................................................................................ 353
19.4 Operation of Clock Monitor..................................................................................................... 354
CHAPTER 20 POWER-ON-CLEAR CIRCUIT...................................................................................... 359
20.1 Functions of Power-on-Clear Circuit...................................................................................... 359
20.2 Configuration of Power-on-Clear Circuit ............................................................................... 360
20.3 Operation of Power-on-Clear Circuit...................................................................................... 360
20.4 Cautions for Power-on-Clear Circuit ...................................................................................... 361
CHAPTER 21 LOW-VOLTAGE DETECTOR ....................................................................................... 363
21.1 Functions of Low-Voltage Detector........................................................................................ 363
21.2 Configuration of Low-Voltage Detector ................................................................................. 363
21.3 Registers Controlling Low-Voltage Detector ........................................................................ 364
21.4 Operation of Low-Voltage Detector........................................................................................ 367
21.5 Cautions for Low-Voltage Detector ........................................................................................ 371
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User's Manual U16227EJ2V0UD