Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 139 of 1823
Jul 31, 2019
RX23W Group 6. Resets
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
Table 6.2 occurs.
Address(es): 0008 C291h
b7 b6 b5 b4 b3 b2 b1 b0
———————CWSF
Value after reset:
0000000
0/1
*1
Bit Symbol Bit Name Description R/W
b0 CWSF Cold/Warm Start Determination Flag 0: Cold start
1: Warm start
R(/W)
*2
b7 to b1 — 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