SLAZ463Z May   2014  – August 2021 MSP430FR5947

 

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6.37 PMM33

PMM Module

Category

Functional

Function

Device might hang-up or generate a RESET during LPM3 wake-up

Description

If the device is used in LPM3 and peripherals of only one of the below peripheral groups  (see also table 6-3 in datasheet under chapter 6.3.1.1) are used (only A or only B), the device might hang-up during wake-up or cause an unexpected reset (BOR or ACCTEIFG).

GroupA:
- TimerTA1
- TimerTA2
- TimerTB0
- eUSCI_A0
- eUSCI_A1
- eUSCI_B0

GroupB:
- TimerTA0
- TimerTA3
- Comparator
- ADC12_B
- REF_A

Workaround

1. Use AM, LPM0, LPM1 or LPM2 instead of LPM3

or

2. Use LPM3 with

a. no other peripherals except WDT and RTC are used in LPM3

or

b. at least one peripheral from each peripheral group (A and B) is enabled in LPM3