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SLAS826F – MARCH 2015 – REVISED MARCH 2017
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Detailed Description
Copyright © 2015–2017, Texas Instruments Incorporated
6.8.1.2
Reboot Reset
The Reboot Reset is identical to the POR and allows the application to emulate a POR class reset without
needing to power cycle the device or activate the RSTn pin. It can also be initiated through the debugger
and, hence, does not affect the debug connection to the device. On the other hand, a POR results in a
debug disconnect.
6.8.1.3
Hard Reset
The Hard Reset resets all modules that are set up or modified by the application. This includes all
peripherals and the nondebug logic of the Cortex-M4. The MSP432P401x MCUs support up to 16 sources
of Hard Reset.
lists the reset source allocation. The Reset Controller registers can be used to
identify the source of reset in the device. For further details, see the
Reset Controller
chapter in the
MSP432P4xx SimpleLink™ Microcontrollers Technical Reference Manual
(1)
The WDT_A generated resets can be mapped either as a Hard Reset or a Soft Reset.
(2)
The FLCTL can generate a reset if a voltage anomaly is detected that can corrupt only flash reads and
not the rest of the system.
(3)
Reserved indicates that this source of Hard Reset is currently unused and left for future expansion.
(4)
The CS is technically not a source of a Hard Reset, but if a Hard Reset occurs during clock source or
frequency changes, the CS can extend the reset to allow the clocks to settle before releasing the
system. This reduces the chance of nondeterministic behavior.
(5)
The PCM is technically not a source of a Hard Reset, but if a Hard Reset causes power mode
changes, the PCM can extend the reset to allow the system to settle before releasing the Reset. This
reduces the chance of nondeterministic behavior.
Table 6-40. MSP432P401x Hard Reset Sources
RESET SOURCE
NUMBER
SOURCE
0
SYSRESETREQ (System reset output of Cortex-M4)
1
WDT_A Time-out
(1)
2
WDT_A Password Violation
(1)
3
FLCTL
(2)
4
Reserved
(3)
5
Reserved
(3)
6
Reserved
(3)
7
Reserved
(3)
8
Reserved
(3)
9
Reserved
(3)
10
Reserved
(3)
11
Reserved
(3)
12
Reserved
(3)
13
Reserved
(3)
14
CS
(4)
15
PCM
(5)