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User’s Manual U19678EJ1V1UD
17
21.5 Cautions for Low-Voltage Detector ........................................................................................ 941
CHAPTER 22 REGULATOR ................................................................................................................. 945
22.1 Regulator Overview ................................................................................................................ 945
22.2 Registers Controlling Regulator............................................................................................ 945
CHAPTER 23 OPTION BYTE............................................................................................................... 947
23.1 Functions of Option Bytes ...................................................................................................... 947
23.1.1 User option byte (000C0H to 000C2H/010C0H to 010C2H) .........................................................947
23.1.2 On-chip debug option byte (000C3H/ 010C3H) ............................................................................948
23.2 Format of User Option Byte .................................................................................................... 948
23.3 Format of On-chip Debug Option Byte .................................................................................. 950
23.4 Setting of Option Byte ............................................................................................................. 951
CHAPTER 24 FLASH MEMORY.......................................................................................................... 952
24.1 Writing with Flash Memory Programmer............................................................................... 952
24.2 Programming Environment..................................................................................................... 960
24.3 Communication Mode.............................................................................................................. 960
24.4 Connection of Pins on Board.................................................................................................. 961
24.4.1 FLMD0 pin ....................................................................................................................................961
24.4.2 TOOL0 pin ....................................................................................................................................962
24.4.3 RESET pin ....................................................................................................................................962
24.4.4 Port pins........................................................................................................................................963
24.4.5 REGC pin......................................................................................................................................963
24.4.6 X1 and X2 pins..............................................................................................................................963
24.4.7 Power supply ................................................................................................................................963
24.5 Registers that Control Flash Memory .................................................................................... 963
24.6 Programming Method .............................................................................................................. 964
24.6.1 Controlling flash memory ..............................................................................................................964
24.6.2 Flash memory programming mode ...............................................................................................964
24.6.3 Selecting communication mode ....................................................................................................965
24.6.4 Communication commands...........................................................................................................965
24.7 Security Settings ...................................................................................................................... 967
24.8 Flash Memory Programming by Self-Programming ............................................................. 969
24.8.1 Boot swap function........................................................................................................................971
24.8.2 Flash shield window function ........................................................................................................973