NEC 78K0S/KU1+ User Manual page 11

11.2 Standby Function Operation ...................................................................................................180
11.2.1 HALT mode ................................................................................................................................... 180
11.2.2 STOP mode .................................................................................................................................. 183
CHAPTER 12 RESET FUNCTION .......................................................................................................187
12.1 Register for Confirming Reset Source...................................................................................194
CHAPTER 13 POWER-ON-CLEAR CIRCUIT .....................................................................................195
13.1 Functions of Power-on-Clear Circuit...................................................................................... 195
13.2 Configuration of Power-on-Clear Circuit ...............................................................................196
13.3 Operation of Power-on-Clear Circuit...................................................................................... 196
13.4 Cautions for Power-on-Clear Circuit ...................................................................................... 197
CHAPTER 14 LOW-VOLTAGE DETECTOR.......................................................................................199
14.1 Functions of Low-Voltage Detector........................................................................................199
14.2 Configuration of Low-Voltage Detector .................................................................................199
14.3 Registers Controlling Low-Voltage Detector.........................................................................200
14.4 Operation of Low-Voltage Detector........................................................................................ 202
14.5 Cautions for Low-Voltage Detector ........................................................................................ 206
CHAPTER 15 OPTION BYTE ...............................................................................................................209
15.1 Functions of Option Byte ........................................................................................................209
15.2 Format of Option Byte .............................................................................................................210
15.3 Caution When the RESET Pin Is Used as an Input-Only Port Pin (P34) .............................211
CHAPTER 16 FLASH MEMORY..........................................................................................................212
16.1 Features.....................................................................................................................................212
16.2 Memory Configuration .............................................................................................................213
16.3 Functional Outline ....................................................................................................................213
16.4 Writing with Flash Memory Programmer ...............................................................................214
16.5 Programming Environment .....................................................................................................215
16.6 Processing of Pins on Board ..................................................................................................217
16.6.1 X1 and X2 pins.............................................................................................................................. 217
16.6.2 RESET pin .................................................................................................................................... 218
16.6.3 Port pins ........................................................................................................................................ 219
16.6.4 Power supply................................................................................................................................. 219
16.7 On-Board and Off-Board Flash Memory Programming........................................................220
16.7.1 Flash memory programming mode ............................................................................................... 220
16.7.2 Communication commands........................................................................................................... 220
16.7.3 Security settings............................................................................................................................ 221
16.8 Flash Memory Programming by Self Programming .............................................................222
16.8.1 Outline of self programming .......................................................................................................... 222
16.8.2 Cautions on self programming function ......................................................................................... 225
16.8.3 Registers used for self-programming function............................................................................... 225
User's Manual U18172EJ2V0UD
11