Datasheet

Index-6
18.4.1 Maskable interrupt acknowledgment ........................................................................................... 593
18.4.2 Software interrupt request acknowledgment ............................................................................... 595
18.4.3 Multiple interrupt servicing........................................................................................................... 596
18.4.4 Interrupt request hold .................................................................................................................. 599
CHAPTER 19 STANDBY FUNCTION .................................................................................................. 600
19.1 Standby Function and Configuration..................................................................................... 600
19.1.1 Standby function ......................................................................................................................... 600
19.1.2 Registers controlling standby function......................................................................................... 601
19.2 Standby Function Operation ................................................................................................... 603
19.2.1 HALT mode ................................................................................................................................. 603
19.2.2 STOP mode ................................................................................................................................ 607
CHAPTER 20 RESET FUNCTION........................................................................................................ 614
20.1 Register for Confirming Reset Source ................................................................................... 623
CHAPTER 21 POWER-ON-CLEAR CIRCUIT...................................................................................... 624
21.1 Functions of Power-on-Clear Circuit...................................................................................... 624
21.2 Configuration of Power-on-Clear Circuit ............................................................................... 625
21.3 Operation of Power-on-Clear Circuit ...................................................................................... 625
21.4 Cautions for Power-on-Clear Circuit ...................................................................................... 628
CHAPTER 22 LOW-VOLTAGE DETECTOR ....................................................................................... 630
22.1 Functions of Low-Voltage Detector........................................................................................ 630
22.2 Configuration of Low-Voltage Detector ................................................................................. 631
22.3 Registers Controlling Low-Voltage Detector......................................................................... 631
22.4 Operation of Low-Voltage Detector ........................................................................................ 634
22.4.1 When used as reset .................................................................................................................... 635
22.4.2 When used as interrupt ............................................................................................................... 638
22.5 Cautions for Low-Voltage Detector ........................................................................................ 641
CHAPTER 23 REGULATOR ................................................................................................................. 644
23.1 Regulator Overview.................................................................................................................. 644
23.2 Registers Controlling Regulator ............................................................................................. 644
23.3 Cautions for Self Programming .............................................................................................. 645
CHAPTER 24 OPTION BYTE............................................................................................................... 646
24.1 Functions of Option Bytes ...................................................................................................... 646
24.2 Format of Option Byte.............................................................................................................. 647
CHAPTER 25 FLASH MEMORY .......................................................................................................... 652
25.1 Internal Memory Size Switching Register.............................................................................. 652
25.2 Writing with Flash Memory Programmer ............................................................................... 653
25.3 Programming Environment ..................................................................................................... 654
25.4 Connection of Pins on Board.................................................................................................. 655
25.4.1 TOOL pins................................................................................................................................... 655
25.4.2 RESET pin .................................................................................................................................. 656