Datasheet
Index-13
22.3 Registers Controlling Voltage Detector ................................................................................. 760
22.3.1 Voltage detection register (LVIM) ................................................................................................. 761
22.3.2 Voltage detection level register (LVIS) ......................................................................................... 762
22.4 Operation of Voltage Detector ................................................................................................ 765
22.4.1 When used as reset mode ............................................................................................................ 765
22.4.2 When used as interrupt mode ...................................................................................................... 767
22.4.3 When used as interrupt and reset mode ...................................................................................... 769
22.5 Cautions for Voltage Detector ................................................................................................. 774
CHAPTER 23 SAFETY FUNCTIONS .................................................................................................... 776
23.1 Overview of Safety Functions ................................................................................................. 776
23.2 Registers Used by Safety Functions ...................................................................................... 777
23.3 Operation of Safety Functions ................................................................................................ 777
23.3.1 Flash memory CRC operation function (high-speed CRC) ........................................................... 777
23.3.1.1 Flash memory CRC control register (CRC0CTL) ............................................................ 778
23.3.1.2 Flash memory CRC operation result register (PGCRCL) ................................................ 779
23.3.2 CRC operation function (general-purpose CRC) .......................................................................... 781
23.3.2.1 CRC input register (CRCIN) ............................................................................................ 781
23.3.2.2 CRC data register (CRCD) .............................................................................................. 782
23.3.3 RAM parity error detection function .............................................................................................. 783
23.3.3.1 RAM parity error control register (RPECTL) .................................................................... 783
23.3.4 RAM guard function ...................................................................................................................... 785
23.3.4.1 Invalid memory access detection control register (IAWCTL) ........................................... 785
23.3.5 SFR guard function ...................................................................................................................... 786
23.3.5.1 Invalid memory access detection control register (IAWCTL) ........................................... 786
23.3.6 Invalid memory access detection function .................................................................................... 787
23.3.6.1 Invalid memory access detection control register (IAWCTL) ........................................... 788
23.3.7 Frequency detection function ....................................................................................................... 789
23.3.7.1 Timer input select register 0 (TIS0) ................................................................................. 790
23.3.8 A/D test function ........................................................................................................................... 791
23.3.8.1 A/D test register (ADTES) ............................................................................................... 793
23.3.8.2 Analog input channel specification register (ADS) .......................................................... 794
CHAPTER 24 REGULATOR ................................................................................................................. 796
24.1 Regulator Overview .................................................................................................................. 796
CHAPTER 25 OPTION BYTE ............................................................................................................... 797
25.1 Functions of Option Bytes ...................................................................................................... 797
25.1.1 User option byte (000C0H to 000C2H) ......................................................................................... 797
25.1.2 On-chip debug option byte (000C3H) ........................................................................................... 798
25.2 Format of User Option Byte .................................................................................................... 799
25.3 Format of On-chip Debug Option Byte ................................................................................... 803