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User’s Manual U16994EJ6V0UD
11
CHAPTER 11 STANDBY FUNCTION.................................................................................................. 187
11.1 Standby Function and Configuration ..................................................................................... 187
11.1.1 Standby function ........................................................................................................................... 187
11.1.2 Registers used during standby ...................................................................................................... 189
11.2 Standby Function Operation ................................................................................................... 190
11.2.1 HALT mode ................................................................................................................................... 190
11.2.2 STOP mode .................................................................................................................................. 193
CHAPTER 12 RESET FUNCTION ....................................................................................................... 197
12.1 Register for Confirming Reset Source................................................................................... 204
CHAPTER 13 POWER-ON-CLEAR CIRCUIT ..................................................................................... 205
13.1 Functions of Power-on-Clear Circuit...................................................................................... 205
13.2 Configuration of Power-on-Clear Circuit ............................................................................... 206
13.3 Operation of Power-on-Clear Circuit ...................................................................................... 206
13.4 Cautions for Power-on-Clear Circuit ...................................................................................... 207
CHAPTER 14 LOW-VOLTAGE DETECTOR ....................................................................................... 209
14.1 Functions of Low-Voltage Detector........................................................................................ 209
14.2 Configuration of Low-Voltage Detector ................................................................................. 209
14.3 Registers Controlling Low-Voltage Detector......................................................................... 210
14.4 Operation of Low-Voltage Detector ........................................................................................ 212
14.5 Cautions for Low-Voltage Detector ........................................................................................ 216
CHAPTER 15 OPTION BYTE ............................................................................................................... 219
15.1 Functions of Option Byte ........................................................................................................ 219
15.2 Format of Option Byte ............................................................................................................. 220
15.3 Caution When the RESET Pin Is Used as an Input-Only Port Pin (P34)............................. 221
CHAPTER 16 FLASH MEMORY.......................................................................................................... 222
16.1 Features..................................................................................................................................... 222
16.2 Memory Configuration ............................................................................................................. 223
16.3 Functional Outline .................................................................................................................... 223
16.4 Writing with Flash Memory Programmer ............................................................................... 224
16.5 Programming Environment ..................................................................................................... 225
16.6 Processing of Pins on Board .................................................................................................. 227
16.6.1 X1 and X2 pins.............................................................................................................................. 227
16.6.2 RESET pin .................................................................................................................................... 228
16.6.3 Port pins ........................................................................................................................................ 229
16.6.4 Power supply................................................................................................................................. 229
16.7 On-Board and Off-Board Flash Memory Programming........................................................ 230
16.7.1 Flash memory programming mode ............................................................................................... 230
16.7.2 Communication commands........................................................................................................... 230
16.7.3 Security settings............................................................................................................................ 231