User’s Manual U17894EJ9V0UD
15
19.2
Standby Function Operation.................................................................................................660
19.2.1
HALT mode ..............................................................................................................................660
19.2.2
STOP mode..............................................................................................................................665
CHAPTER 20 RESET FUNCTION ......................................................................................................672
20.1
Register for Confirming Reset Source ................................................................................680
CHAPTER 21 POWER-ON-CLEAR CIRCUIT ....................................................................................681
21.1
Functions of Power-on-Clear Circuit ...................................................................................681
21.2
Configuration of Power-on-Clear Circuit.............................................................................682
21.3
Operation of Power-on-Clear Circuit ...................................................................................682
21.4
Cautions for Power-on-Clear Circuit....................................................................................685
CHAPTER 22 LOW-VOLTAGE DETECTOR ......................................................................................687
22.1
Functions of Low-Voltage Detector .....................................................................................687
22.2
Configuration of Low-Voltage Detector ...............................................................................688
22.3
Registers Controlling Low-Voltage Detector ......................................................................688
22.4
Operation of Low-Voltage Detector......................................................................................693
22.4.1
When used as reset .................................................................................................................694
22.4.2
When used as interrupt ............................................................................................................700
22.5
Cautions for Low-Voltage Detector......................................................................................706
CHAPTER 23 REGULATOR ................................................................................................................710
23.1
Regulator Overview ...............................................................................................................710
23.2
Registers Controlling Regulator...........................................................................................710
CHAPTER 24 OPTION BYTE..............................................................................................................712
24.1
Functions of Option Bytes ....................................................................................................712
24.1.1
User option byte (000C0H to 000C2H/010C0H to 010C2H) ....................................................712
24.1.2
On-chip debug option byte (000C3H/ 010C3H)........................................................................713
24.2
Format of User Option Byte ..................................................................................................713
24.3
Format of On-chip Debug Option Byte ................................................................................715
24.4
Setting of Option Byte ...........................................................................................................716
CHAPTER 25 FLASH MEMORY.........................................................................................................717
25.1
Writing with Flash Memory Programmer.............................................................................717
25.2
Programming Environment...................................................................................................721
25.3
Communication Mode ...........................................................................................................721
25.4
Connection of Pins on Board ...............................................................................................722
25.4.1
FLMD0 pin................................................................................................................................722
25.4.2
TOOL0 pin................................................................................................................................723
25.4.3
RESET pin................................................................................................................................723
25.4.4
Port pins ...................................................................................................................................724
25.4.5
REGC pin .................................................................................................................................724
25.4.6
X1 and X2 pins .........................................................................................................................724
25.4.7
Power supply............................................................................................................................724