R01UH0822EJ0100 Rev.1.00
Page 97 of 1041
Jul 31, 2019
RX13T Group
6. Resets
LVD2RF Flag (Voltage Monitoring 2 Reset Detect Flag)
The LVD2RF flag indicates that VCC voltage has fallen below Vdet2.
[Setting condition]
When Vdet2-level VCC voltage is detected.
[Clearing conditions]
When a reset listed in
When LVD2RF is read as 1 and then 0 is written to LVD2RF.
6.2.2
Reset Status Register 1 (RSTSR1)
Note 1. The value after reset depends on the reset source.
Note 2. Only 1 can be written to set the flag.
RSTSR1 determines whether a power-on reset has caused the reset processing (cold start) or a reset signal input during
operation has caused the reset processing (warm start).
CWSF Flag (Cold/Warm Start Determination Flag)
The CWSF flag indicates the type of reset processing: cold start or warm start.
The CWSF flag is initialized at a power-on.
[Setting condition]
When 1 is written through programming; it is not set to 0 even when 0 is written.
[Clearing condition]
When a reset listed in
Address(es): 0008 C291h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
—
—
—
CWSF
Value after reset:
0
0
0
0
0
0
0
0/1*
Bit
Symbol
Bit Name
Description
R/W
b0
Cold/Warm Start Determination Flag
0: Cold start
1: Warm start
R(/W)
b7 to b1
—
Reserved
These bits are read as 0. The write value should be 0.
R/W