Watchdog Timer Mode Register 1 - Wdtmr1 - Holtek HT32F52220 User Manual

32-Bit Arm ® Cortex ® -M0+ MCU
HT32F52220/HT32F52230
Watchdog Timer Mode Register 1 – WDTMR1
This register specifies the Watchdog delta value and the prescaler selection.
Offset: 0x008
Reset value: 0x0000_7FFF
31
Type/Reset
23
Type/Reset
15
Reserved
Type/Reset RW
7
Type/Reset RW 1 RW
Bits Field
[14:12] WPSC
[11:0] WDTD
Rev. 1.10
30 29 28
22 21 20
14 13 12
WPSC
1 RW 1 RW
6 5 4
1 RW 1 RW
Descriptions
Watchdog Timer Prescaler Selection
000: 1/1
001: 1/2
010: 1/4
011: 1/8
100: 1/16
101: 1/32
110: 1/64
111: 1/128
Watchdog Timer Delta Value
Define the permitted range to reload the Watchdog timer. If the Watchdog timer
counter value is less than or equal to the WDTD value, writing to the WDTCR
register with WDTRS = 1 and RSKEY = 0x5FA0 will reload the timer. If the Watchdog
Timer value is greater than the WDTD value, then writing WDTCR with WDTRS
= 1 and RSKEY = 0x5FA0 will cause a Watchdog Timer error. This feature can be
disabled by programming a WDTD value greater than or equal to the WDTV value.
274 of 366
27 26
Reserved
19 18
Reserved
11 10
1 RW 1 RW 1 RW
3 2
WDTD
1 RW 1 RW 1 RW
25 24
17 16
9 8
WDTD
1 RW 1
1 0
1 RW 1
November 09, 2018