R01UH0823EJ0100 Rev.1.00
Page 842 of 1823
Jul 31, 2019
RX23W Group
31. Independent Watchdog Timer (IWDTa)
31.2.5
IWDT Count Stop Control Register (IWDTCSTPR)
The IWDTCSTPR register controls whether to stop the IWDT counter in a low power consumption state. There are some
restrictions on writing to the IWDTCSTPR register. For details, refer to
section 31.3.2, Control over Writing to the
IWDTCR, IWDTRCR, and IWDTCSTPR Registers
In auto-start mode, the IWDTCSTPR register setting are disabled, and the settings in option function select register 0
(OFS0) are enabled. The bit setting mode to the IWDTCSTPR register can also be made in the OFS0 register. For details,
refer to
section 31.3.8, Correspondence between Option Function Select Register 0 (OFS0) and IWDT
.
SLCSTP Bit (Sleep Mode Count Stop Control)
This bit selects whether to stop counting at a transition to sleep mode, software standby mode, or deep sleep mode.
31.2.6
Option Function Select Register 0 (OFS0)
For option function select register 0 (OFS0), refer to
section 31.3.8, Correspondence between Option Function
Select Register 0 (OFS0) and IWDT Registers
.
Address(es): IWDT.IWDTCSTPR 0008 8038h
b7
b6
b5
b4
b3
b2
b1
b0
SLCST
P
—
—
—
—
—
—
—
Value after reset:
1
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b6 to b0
—
Reserved
These bits are read as 0. Writing to these bits has no effect.
R
b7
Sleep Mode Count Stop Control
0: Count stop is disabled.
1: Count is stopped at a transition to sleep mode, software
standby mode, or deep sleep mode.
R/W