
Preliminary User’s Manual U17790EJ1V0UD
19
CHAPTER 25 RESET FUNCTIONS......................................................................................................969
25.1
Overview.................................................................................................................................969
25.2
Registers to Check Reset Source........................................................................................971
25.3
Operation................................................................................................................................972
25.3.1
Reset operation via RESET pin ............................................................................................... 972
25.3.2
Reset operation by watchdog timer 2 ...................................................................................... 974
25.3.3
Reset operation by low-voltage detector.................................................................................. 976
25.3.4
Operation after reset release ................................................................................................... 977
25.3.5
Reset function operation flow .................................................................................................. 978
CHAPTER 26 CLOCK MONITOR .........................................................................................................979
26.1
Functions ...............................................................................................................................979
26.2
Configuration .........................................................................................................................979
26.3
Register ..................................................................................................................................980
26.4
Operation................................................................................................................................981
CHAPTER 27 LOW-VOLTAGE DETECTOR (LVI)..............................................................................984
27.1
Functions ...............................................................................................................................984
27.2
Configuration .........................................................................................................................984
27.3
Registers ................................................................................................................................985
27.4
Operation................................................................................................................................987
27.4.1
To use for internal reset signal ................................................................................................ 987
27.4.2
To use for interrupt .................................................................................................................. 988
27.5
RAM Retention Voltage Detection Operation.....................................................................989
27.6
Emulation Function...............................................................................................................990
CHAPTER 28 REGULATOR ..................................................................................................................991
28.1
Overview.................................................................................................................................991
28.2
Operation................................................................................................................................992
CHAPTER 29 ROM CORRECTION FUNCTION .................................................................................993
29.1
Overview.................................................................................................................................993
29.2
Registers ................................................................................................................................994
29.3
ROM Correction Operation and Program Flow ..................................................................996
29.4
Cautions .................................................................................................................................998
CHAPTER 30 FLASH MEMORY...........................................................................................................999
30.1
Features..................................................................................................................................999
30.2
Memory Configuration ........................................................................................................1000
30.3
Functional Outline...............................................................................................................1002
30.4
Rewriting by Dedicated Flash Programmer .....................................................................1005
30.4.1
Programming environment .................................................................................................... 1005
30.4.2
Communication mode............................................................................................................ 1006
30.4.3
Flash memory control ............................................................................................................ 1012
30.4.4
Selection of communication mode......................................................................................... 1013
30.4.5
Communication commands ................................................................................................... 1014
30.4.6
Pin connection ....................................................................................................................... 1015
30.5
Rewriting by Self Programming.........................................................................................1020
30.5.1
Overview ............................................................................................................................... 1020