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Chapter 21
21.2 Reset Registers
Table 21-3
(1)
Access
Address
Initial Value
Table 21-4
Note
712
The reset functions are controlled and operated by means of the following
registers:
Reset function register overview
Register name
Reset source flag register
RESF - Reset source flag register
The 8-bit RESF register contains information about which type of resets
occurred since the last Power-On-Clear or external RESET.
The RESF register is a special register that can be written only by specific
sequences.
Each following reset condition sets the corresponding flag in the register. For
example, if a Power-On-Clear reset is finished and then a Watchdog Timer
reset occurs, the RESF reads 0001 0000
The register can be read/written in 8-bit units and 1-bit units.
FFFF F888
H
Power-On-Clear reset and external RESET sets this register to 00
7
6
0
0
R
R
RESF register contents
Bit position
Bit name
4
WDT2RF
1
CLMRF
0
LVIRF
If clearing this register by writing and flag setting (occurrence of reset) conflict,
flag setting takes precedence.
User's Manual U18743EE1V2UM00
.
B
5
4
3
0
WDT2RF
0
R
R/W
R
Reset by Watchdog Timer
0: Not generated.
1: Generated.
Reset by Clock Monitor
0: Not generated.
1: Generated.
Reset by Low-Voltage Detector
0: Not generated.
1: Generated.
Shortcut
Address
RESF
FFFF F888
.
H
2
1
0
CLMRF
R
R/W
Function
Reset
H
0
LVIRF
R/W
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