Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 138 of 1823
Jul 31, 2019
RX23W Group 6. Resets
6.2 Register Descriptions
6.2.1 Reset Status Register 0 (RSTSR0)
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.
Address(es): 0008 C290h
b7 b6 b5 b4 b3 b2 b1 b0
—————
LVD1R
F
LVD0R
F
PORF
Value after reset:
00000
0*
1
0*
1
0*
1
Bit Symbol Bit Name Description R/W
b0 PORF Power-On Reset Detect Flag 0: Power-on reset not detected.
1: Power-on reset detected.
R(/W)
*2
b1 LVD0RF Voltage Monitoring 0 Reset Detect
Flag
0: Voltage monitoring 0 reset not detected.
1: Voltage monitoring 0 reset detected.
R(/W)
*2
b2 LVD1RF Voltage Monitoring 1 Reset Detect
Flag
0: Voltage monitoring 1 reset not detected.
1: Voltage monitoring 1 reset detected.
R(/W)
*2
b7 to b3 — Reserved These bits are read as 0. The write value should be 0. R/W

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English