Renesas RX Series User Manual

R01UH0823EJ0100 Rev.1.00 Page 149 of 1823
Jul 31, 2019
RX23W Group 7. Option-Setting Memory (OFSM)
7.2 Register Descriptions
7.2.1 Option Function Select Register 0 (OFS0)
Address(es): OFSM.OFS0 FFFF FF8Ch
b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16
———
WDTRS
TIRQS
WDTRPSS[1:0] WDTRPES[1:0] WDTCKS[3:0] WDTTOPS[1:0]
WDTST
RT
—
Value after reset:
The value set by the user*
1
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
—
IWDTS
LCSTP
—
IWDTR
STIRQS
IWDTRPSS[1:0] IWDTRPES[1:0] IWDTCKS[3:0] IWDTTOPS[1:0]
IWDTS
TRT
—
Value after reset:
The value set by the user*
1
Bit Symbol Bit Name Description R/W
b0 — Reserved When reading, this bit returns the value written by the user.
The write value should be 1.
R
b1 IWDTSTRT IWDT Start Mode Select 0: IWDT is automatically activated in auto-start mode after a
reset
1: IWDT is halted after a reset
R
b3, b2 IWDTTOPS[1:0] IWDT Timeout Period Select
b3 b2
0 0: 128 cycles (007Fh)
0 1: 512 cycles (01FFh)
1 0: 1024 cycles (03FFh)
1 1: 2048 cycles (07FFh)
R
b7 to b4 IWDTCKS[3:0] IWDT Clock Frequency
Division Ratio Select
b7 b4
0 0 0 0: No division
0 0 1 0: Divide-by-16
0 0 1 1: Divide-by-32
0 1 0 0: Divide-by-64
1 1 1 1: Divide-by-128
0 1 0 1: Divide-by-256
Settings other than above are prohibited.
R
b9, b8 IWDTRPES[1:0] IWDT Window End Position
Select
b9 b8
0 0: 75%
0 1: 50%
1 0: 25%
1 1: 0% (No window end position setting)
R
b11, b10 IWDTRPSS[1:0] IWDT Window Start Position
Select
b11 b10
0 0: 25%
0 1: 50%
1 0: 75%
1 1: 100% (No window start position setting)
R
b12 IWDTRSTIRQS IWDT Reset Interrupt
Request Select
0: Non-maskable interrupt request is enabled
1: Reset is enabled
R
b13 — Reserved When reading, this bit returns the value written by the user.
The write value should be 1.
R
b14 IWDTSLCSTP IWDT Sleep Mode Count
Stop Control
0: Counting stop is disabled
1: Counting stop is enabled when entering sleep, software
standby, or deep sleep mode
R
b16, b15 — Reserved When reading, these bits return the value written by the
user. The write value should be 1.
R
b17 WDTSTRT WDT Start Mode Select 0: WDT is automatically activated in auto-start mode after a
reset
1: WDT is stopped after a reset
R

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English