Watchdog Timer Clock Selection Register - Wdtcsr - Holtek HT32F50231 User Manual

32-Bit Arm ® Cortex ® -M0+ MCU
HT32F50231/HT32F50241
Watchdog Timer Clock Selection Register – WDTCSR
This register specifies the Watchdog timer clock source selection and lock configuration.
Offset: 0x018
Reset value: 0x0000_0000
31
Type/Reset
23
Type/Reset
15
Type/Reset
7
Reserved
Type/Reset
Bits Field
[4] WDTLOCK
[0] WDTSRC
Rev. 1.00
30 29 28
22 21 20
14 13 12
6 5 4
WDTLOCK
RW
Descriptions
Watchdog Timer Lock Mode
0: This bit is only set to 0 on any reset. It cannot be cleared by software
1: This bit is set once only by software and locks the Watchdog timer function
Software can set this bit to 1 at any time. Once the WDTLOCK bit is set, the function
and registers of the Watchdog timer cannot be modified or disabled, including the
Watchdog timer clock source, and only waits for a system reset to disable the lock
mode.
Watchdog Timer Clock Source Selection
0: Internal 32 kHz RC oscillator clock selected (LSI)
1: External 32.768 kHz crystal oscillator clock selected (LSE)
Select using software to control the Watchdog timer clock source.
390 of 486
27 26
Reserved
19 18
Reserved
11 10
Reserved
3 2
Reserved
0
25 24
17 16
9 8
1 0
WDTSRC
RW 0
July 31, 2018