SLAZ105Z October 2012 – May 2021 CC430F6147
LCDB Module
Functional
Static DC charge can built up on dedicated COMx pins.
If the device is set into LPMx.5, its dedicated COMx pins (not shared with GPIO function) are floating. External leakage paths to these pins can result in dedicated COMx pins being charged. This can lead to static DC voltages being applied to the external LCD display. This might cause long term over-stress to the LCD display and/or cause certain LCD segments to flare up when device wakes up from LPMx.5 mode.
Connect a high-resistance resistor between the dedicated COM pins and Vss to permanently discharge the affected pins.