Reset Status Register 1 (Rstsr1) - Renesas RX100 Series User Manual

RX13T Group
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 Table 6.2 occurs.
 When LVD2RF is read as 1 and then 0 is written to LVD2RF.
6.2.2

Reset Status Register 1 (RSTSR1)

Address(es): 0008 C291h
b7 b6
— —
0 0
Value after reset:
Bit Symbol
b0 CWSF
b7 to b1 —
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 Table 6.2 occurs.
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
b5 b4 b3 b2
— — — —
0 0 0 0
Bit Name
Cold/Warm Start Determination Flag
Reserved
b1 b0
— CWSF
0 1
0/1*
Description
0: Cold start
1: Warm start
These bits are read as 0. The write value should be 0.
6. Resets
R/W
R(/W)
*2
R/W
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