Preliminary User’s Manual U16896EJ1V0UD
14
19.7.2
Releasing sub-IDLE mode ........................................................................................................... 552
CHAPTER 20 RESET FUNCTION........................................................................................................ 554
20.1
Overview ................................................................................................................................... 554
20.2
Configuration............................................................................................................................ 554
20.3
Register to Check Reset Source............................................................................................. 555
20.4
Reset Sources .......................................................................................................................... 556
20.4.1
Reset operation via RESET pin ................................................................................................... 556
20.4.2
Reset operation by WDTRES1 signal .......................................................................................... 560
20.4.3
Reset operation by WDTRES2 signal .......................................................................................... 561
20.4.4
Power-on-clear reset operation.................................................................................................... 562
20.4.5
Reset operation by low-voltage detector...................................................................................... 565
20.4.6
Reset operation by clock monitor................................................................................................. 566
20.5
Reset Output Function............................................................................................................. 567
CHAPTER 21 CLOCK MONITOR ........................................................................................................ 568
21.1
Function .................................................................................................................................... 568
21.2
Registers ................................................................................................................................... 568
21.3
Operation .................................................................................................................................. 570
21.4
Ring Clock Operation Mode .................................................................................................... 573
21.4.1
Setting and operation status ........................................................................................................ 573
21.4.2
Releasing ring clock operation mode ........................................................................................... 573
21.5
Ring HALT Mode ...................................................................................................................... 575
21.5.1
Setting and operation status ........................................................................................................ 575
21.5.2
Releasing ring HALT mode.......................................................................................................... 575
CHAPTER 22 LOW-VOLTAGE DETECTOR ....................................................................................... 577
22.1
Function .................................................................................................................................... 577
22.2
Configuration............................................................................................................................ 577
22.3
Registers ................................................................................................................................... 578
22.4
Operation .................................................................................................................................. 580
CHAPTER 23 POWER-ON-CLEAR CIRCUIT...................................................................................... 582
23.1
Function .................................................................................................................................... 582
23.2
Configuration............................................................................................................................ 582
23.3
Operation .................................................................................................................................. 583
CHAPTER 24 ROM CORRECTION FUNCTION................................................................................. 584
24.1
Overview ................................................................................................................................... 584
24.2
Control Registers ..................................................................................................................... 585
24.2.1
Correction address registers 0 to 3 (CORAD0 to CORAD3)........................................................ 585
24.2.2
Correction control register (CORCN) ........................................................................................... 586
24.3
ROM Correction Operation and Program Flow ..................................................................... 586
CHAPTER 25 MASK OPTION/OPTION BYTE ................................................................................... 588
25.1
Mask Option (Mask ROM Versions)........................................................................................ 588
25.2
Option Byte (Flash Memory Versions) ................................................................................... 589