Register Map; Register Descriptions; Watchdog Timer Control Register - Wdtcr; Table 46. Watchdog Timer Register Map - Holtek HT32F54231 User Manual

32-Bit Arm ® Cortex ® -M0+ MCU
HT32F54231/HT32F54241/HT32F54243/HT32F54253

Register Map

The following table shows the Watchdog Timer registers and reset values.

Table 46. Watchdog Timer Register Map

Register
WDTCR 0x000
WDTMR0 0x004
WDTMR1 0x008
WDTSR 0x00C
WDTPR 0x010
WDTCSR 0x018

Register Descriptions

Watchdog Timer Control Register – WDTCR
This register is used to reload the Watchdog timer.
Offset: 0x000
Reset value: 0x0000_0000
31
Type/Reset WO 0 WO
23
Type/Reset WO 0 WO
15
Type/Reset
7
Type/Reset
Bits Field
[31:16] RSKEY
[0] WDTRS
Rev. 1.00
Offset
Watchdog Timer Control Register
Watchdog Timer Mode Register 0
Watchdog Timer Mode Register 1
Watchdog Timer Status Register
Watchdog Timer Protection Register
Watchdog Timer Clock Selection Register
30 29 28
0 WO 0 WO
22 21 20
0 WO 0 WO
14 13 12
6 5 4
Reserved
Descriptions
Watchdog Timer Reload Lock Key
The RSKEY [15:0] bits should be written with a 0x5FA0 value to enable the WDT
reload operation function. Writing any other value except 0x5FA0 in this field will
abort the write operation.
Watchdog Timer Reload
0: No effect
1: Reload Watchdog Timer
This bit is used to reload the Watchdog timer counter as a WDTV value which
is stored in the WDTMR0 register. It is set to 1 by software and cleared to 0 by
hardware automatically.
413 of 576
Description
27 26
RSKEY
0 WO 0 WO 0 WO
19 18
RSKEY
0 WO 0 WO 0 WO
11 10
Reserved
3 2
Reset Value
0x0000_0000
0x0000_0FFF
0x0000_7FFF
0x0000_0000
0x0000_0000
0x0000_0000
25 24
0 WO 0
17 16
0 WO 0
9 8
1 0
WDTRS
WO 0
January 28, 2022