5.3.1 GPIO Pins Functions

Most of the RNBD451 module pins can be configured as GPIOs pins. To find the functionality supported by each of these GPIOs, see Table 3-1. It is recommended to add a series resistor on the host board for all critical, high frequency pins and clocks for EMI considerations. The value of the series resistor depends on the actual pin configuration. These resistors must be placed close to the module. For the placement of the series resistor, see Figure 6-2.