MSP432P401R Datasheet, PDF (95/157 Pages) Texas Instruments – Mixed-Signal Microcontrollers

www.ti.com
MSP432P401R, MSP432P401M
SLAS826B – MARCH 2015 – REVISED FEBRUARY 2016
6.8.7 Watchdog Timer (WDT_A)
The primary function of the WDT_A module is to perform a controlled system restart after a software
problem occurs. If the selected time interval expires, a system reset is generated. If the watchdog function
is not needed in an application, the module can be configured as an interval timer and can generate
interrupts at selected time intervals.
The watchdog can generate a reset either on a time-out or a password violation. This reset can be
configured to generate either a Hard Reset or a Soft Reset into the system. Refer to the MSP432P4xx
Family Technical Reference Manual for more details.
Table 6-25. WDT_A Clocks
WDTSSELx
00
01
10
11
NORMAL OPERATION
(WATCHDOG AND INTERVAL TIMER MODE)
SMCLK
ACLK
VLOCLK
BCLK
CAUTION
The WDT must be set to interval mode before transitioning into the LPM3 or
LPM3.5 modes of operation. This allows the WDT event to wake the device
and return it to active modes of operation. Using the WDT in watchdog mode
may result in nondeterministic behavior due to the generated reset.
6.8.7.1 Watchdog Reset Control Register [Address = E004_3008h]
Figure 6-15. SYS_WDTRESET_CTL Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Reserved
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
r
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reserved
VIOLA TIMEO
TION UT
r
r
r
r
r
r
r
r
r
r
r
r
r
r
rw-1 rw-1
Bit
31-2
1
Field
Reserved
VIOLATION
0
TIMEOUT
Table 6-26. SYS_WDTRESET_CTL Register Description
Type
R
RW
Reset
0h
1h
Description
Reserved. Reads return 0h
0b = WDT password violation event generates Soft reset
RW
1h
1b = WDT password violation event generates Hard reset
0b = WDT time-out event generates Soft reset
1b = WDT time-out event generates Hard reset
Copyright © 2015–2016, Texas Instruments Incorporated
Submit Documentation Feedback
Product Folder Links: MSP432P401R MSP432P401M
Detailed Description
95