UPD78F1502AGK-GAK-AX Datasheet, PDF (14/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

19.4.4 Interrupt request hold .................................................................................................................. 770
CHAPTER 20 KEY INTERRUPT FUNCTION ..................................................................................... 771
20.1 Functions of Key Interrupt ...................................................................................................... 771
20.2 Configuration of Key Interrupt ................................................................................................ 771
20.3 Register Controlling Key Interrupt ......................................................................................... 772
CHAPTER 21 STANDBY FUNCTION .................................................................................................. 773
21.1 Standby Function and Configuration ..................................................................................... 773
21.1.1 Standby function ......................................................................................................................... 773
21.1.2 Registers controlling standby function......................................................................................... 773
21.2 Standby Function Operation ................................................................................................... 776
21.2.1 HALT mode ................................................................................................................................. 776
21.2.2 STOP mode ................................................................................................................................ 782
CHAPTER 22 RESET FUNCTION........................................................................................................ 788
22.1 Register for Confirming Reset Source ................................................................................... 797
CHAPTER 23 POWER-ON-CLEAR CIRCUIT...................................................................................... 798
23.1 Functions of Power-on-Clear Circuit...................................................................................... 798
23.2 Configuration of Power-on-Clear Circuit ............................................................................... 799
23.3 Operation of Power-on-Clear Circuit ...................................................................................... 799
23.4 Cautions for Power-on-Clear Circuit ...................................................................................... 802
CHAPTER 24 LOW-VOLTAGE DETECTOR ....................................................................................... 804
24.1 Functions of Low-Voltage Detector........................................................................................ 804
24.2 Configuration of Low-Voltage Detector ................................................................................. 805
24.3 Registers Controlling Low-Voltage Detector......................................................................... 805
24.4 Operation of Low-Voltage Detector ........................................................................................ 810
24.4.1 When used as reset .................................................................................................................... 811
24.4.2 When used as interrupt ............................................................................................................... 817
24.5 Cautions for Low-Voltage Detector ........................................................................................ 823
CHAPTER 25 REGULATOR ................................................................................................................. 827
25.1 Regulator Overview.................................................................................................................. 827
25.2 Registers Controlling Regulator ............................................................................................. 827
CHAPTER 26 OPTION BYTE............................................................................................................... 829
26.1 Functions of Option Bytes ...................................................................................................... 829
26.1.1 User option byte (000C0H to 000C2H/010C0H to 010C2H) ....................................................... 829
26.1.2 On-chip debug option byte (000C3H/ 010C3H)........................................................................... 830
26.2 Format of User Option Byte .................................................................................................... 830
26.3 Format of On-chip Debug Option Byte................................................................................... 832
26.4 Setting of Option Byte.............................................................................................................. 833
CHAPTER 27 FLASH MEMORY .......................................................................................................... 834
27.1 Writing with Flash Memory Programmer ............................................................................... 834
27.2 Programming Environment ..................................................................................................... 834