Register Descriptions; Reset Status Register 0 (Rstsr0) - Renesas RX100 Series User Manual

RX13T Group
6.2

Register Descriptions

6.2.1

Reset Status Register 0 (RSTSR0)

Address(es): 0008 C290h
b7 b6
— —
Value after reset: 0 0
Bit Symbol
b0 PORF
b1 LVD0RF
b2 LVD1RF
b3 LVD2RF
b7 to b4 —
Note 1. The value after reset depends on the reset source.
Note 2. Only 0 can be written to clear the flag.
PORF Flag (Power-On Reset Detect Flag)
The PORF flag indicates that a power-on reset has occurred.
[Setting condition]
 When a power-on reset occurs.
[Clearing conditions]
 When resets shown in Table 6.2 occur.
 When PORF is read as 1 and then 0 is written to PORF.
LVD0RF Flag (Voltage Monitoring 0 Reset Detect Flag)
The LVD0RF flag indicates that VCC voltage has fallen below Vdet0.
[Setting condition]
 When Vdet0-level VCC voltage is detected.
[Clearing conditions]
 When resets listed in Table 6.2 occur.
 When LVD0RF is read as 1 and then 0 is written to LVD0RF.
LVD1RF Flag (Voltage Monitoring 1 Reset Detect Flag)
The LVD1RF flag indicates that VCC voltage has fallen below Vdet1.
[Setting condition]
 When Vdet1-level VCC voltage is detected.
[Clearing conditions]
 When a reset listed in Table 6.2 occurs.
 When LVD1RF is read as 1 and then 0 is written to LVD1RF.
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
b5 b4 b3 b2
LVD2R LVD1R
— —
F F
0 0 0* 1 0* 1
Bit Name
Power-On Reset Detect Flag
Voltage Monitoring 0 Reset Detect
Flag
Voltage Monitoring 1 Reset Detect
Flag
Voltage Monitoring 2 Reset Detect
Flag
Reserved
b1 b0
LVD0R
PORF
F
0* 1 0* 1
Description
0: Power-on reset not detected.
1: Power-on reset detected.
0: Voltage monitoring 0 reset not detected.
1: Voltage monitoring 0 reset detected.
0: Voltage monitoring 1 reset not detected.
1: Voltage monitoring 1 reset detected.
0: Voltage monitoring 2 reset not detected.
1: Voltage monitoring 2 reset detected.
These bits are read as 0. The write value should be 0.
6. Resets
R/W
R(/W)
2
*
R(/W)
2
*
R(/W)
2
*
R(/W)
2
*
R/W
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