LCD segment (Sx) and common (COMx) signal traces are continuously switching while the LCD is enabled and should, therefore, be kept away from sensitive analog signals such as ADC inputs to prevent any noise coupling. TI recommends keeping the LCD signal traces on one side of the PCB grouped together in a bus-like fashion. A ground plane underneath the LCD traces and guard traces employed alongside the LCD traces can provide shielding.

If the internal charge pump of the LCD module is used, the externally provided capacitor on the LCDCAP0 and LCDCAP1 pins should be located as close as possible to the MCU. The capacitor should be connected to the device using a short and direct trace.

For an example layout of connecting a 4-mux LCD with 27 segments to an MSP430FR4133 and using the charge pump feature, see the MSP-EXP430FR4133 LaunchPad development kit.