Datasheet

17.3 Registers Controlling Interrupt Functions............................................................................. 596
17.4 Interrupt Servicing Operations ............................................................................................... 629
17.4.1 Maskable interrupt acknowledgment ........................................................................................... 629
17.4.2 Software interrupt request acknowledgment ............................................................................... 631
17.4.3 Multiple interrupt servicing........................................................................................................... 632
17.4.4 Interrupt request hold .................................................................................................................. 635
CHAPTER 18 KEY INTERRUPT FUNCTION ..................................................................................... 636
18.1 Functions of Key Interrupt ...................................................................................................... 636
18.2 Configuration of Key Interrupt ................................................................................................ 637
18.3 Register Controlling Key Interrupt ......................................................................................... 638
CHAPTER 19 STANDBY FUNCTION .................................................................................................. 639
19.1 Standby Function and Configuration..................................................................................... 639
19.1.1 Standby function ......................................................................................................................... 639
19.1.2 Registers controlling standby function......................................................................................... 640
19.2 Standby Function Operation ................................................................................................... 642
19.2.1 HALT mode ................................................................................................................................. 642
19.2.2 STOP mode ................................................................................................................................ 647
CHAPTER 20 RESET FUNCTION........................................................................................................ 655
20.1 Register for Confirming Reset Source ................................................................................... 664
CHAPTER 21 POWER-ON-CLEAR CIRCUIT...................................................................................... 665
21.1 Functions of Power-on-Clear Circuit...................................................................................... 665
21.2 Configuration of Power-on-Clear Circuit ............................................................................... 666
21.3 Operation of Power-on-Clear Circuit ...................................................................................... 666
21.4 Cautions for Power-on-Clear Circuit ...................................................................................... 669
CHAPTER 22 LOW-VOLTAGE DETECTOR ....................................................................................... 671
22.1 Functions of Low-Voltage Detector........................................................................................ 671
22.2 Configuration of Low-Voltage Detector ................................................................................. 672
22.3 Registers Controlling Low-Voltage Detector......................................................................... 672
22.4 Operation of Low-Voltage Detector ........................................................................................ 676
22.4.1 When used as reset .................................................................................................................... 678
22.4.2 When used as interrupt ............................................................................................................... 683
22.5 Cautions for Low-Voltage Detector ........................................................................................ 688
CHAPTER 23 REGULATOR ................................................................................................................. 691
23.1 Regulator Overview.................................................................................................................. 691
23.2 Register Controlling Regulator ............................................................................................... 691
23.3 Cautions for Self Programming .............................................................................................. 692
CHAPTER 24 OPTION BYTE............................................................................................................... 693
24.1 Functions of Option Bytes ...................................................................................................... 693
24.2 Format of Option Byte.............................................................................................................. 694