MSP432P401R Datasheet, PDF (84/157 Pages) Texas Instruments – Mixed-Signal Microcontrollers

MSP432P401R, MSP432P401M
SLAS826B – MARCH 2015 – REVISED FEBRUARY 2016
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6.7.1.4 Soft Reset
The Soft Reset resets only the execution component of the system, which is the non debug logic in the
Cortex-M4 and the WDT_A. This reset remains nonintrusive to all other peripherals and system
components. The MSP432P401x devices support up to 16 sources of Soft Reset. The following table lists
the reset source allocation. The Reset Controller registers can be used to identify the possible source of
reset in the design. For further details, refer to Reset Controller chapter in the MSP432P4xx Family
Technical Reference Manual (SLAU356).
Table 6-15. MSP432P401x Soft Reset Sources
RESET SOURCE
NUMBER
SOURCE
0
CPU LOCKUP Condition (LOCKUP output of Cortex-M4)
1
WDT_A Time-out ⁽¹⁾
2
WDT_A Password Violation ⁽¹⁾
3
Reserved ⁽²⁾
4
Reserved ⁽²⁾
5
Reserved ⁽²⁾
6
Reserved ⁽²⁾
7
Reserved ⁽²⁾
8
Reserved ⁽²⁾
9
Reserved ⁽²⁾
10
Reserved ⁽²⁾
11
Reserved ⁽²⁾
12
Reserved ⁽²⁾
13
Reserved ⁽²⁾
14
Reserved ⁽²⁾
15
Reserved ⁽²⁾
(1) The WDT_A generated resets can be mapped either as a Hard Reset or a Soft Reset.
(2) 'Reserved' indicates that this source of Soft Reset is currently unused and left for future expansion.
NOTE
To support and enhance debug of reset conditions, the Reset Controller is located on the
PPB of the device. This allows the Reset Controller to remain accessible even if the device is
stuck in a Hard or Soft reset state. The Reset Controller permits overrides for Hard and Soft
resets, thereby allowing regaining control of the device and isolating the cause of the stuck
reset.
6.7.2 Power Supply System (PSS)
The PSS controls all the power supply related functionality of the device. It consists of the following
components
6.7.2.1 VCCDET
The VCCDET monitors the input voltage applied at the DVCC and AVCC pins of the device. When the
V_CC is found to be below the operating range of the VCCDET trip points, it generates a brownout
condition, thereby initiating a device reset (POR class reset).
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