4.2.5.1 GPIO Pins/PPS Functions

Most of the WBZ45 Module pins can be configured as GPIOs pins or for PPS functionality. To find the functionality supported by each of these GPIOs, see I/O Ports and Peripheral Pin Select (PPS) from Related Links. The recommendation is to add a series resistor on the host board for all GPIOs, mainly critical high-frequency pins and clocks for EMI considerations. The value of the series resistor depends on the actual pin configuration. The user must place these resistors close to the module. Example of Host Board on Top Layer illustrates the placement of the series resistor; see the Example of Host Board on Top Layer figure in the WBZ45 Module Routing Guidelines from Related Links.