ODIN-W2 series - System integration manual
UBX-14040040 - R20 System description Page 18 of 43
C1-Public
1.7 GPIO pins
On the ODIN-W2 series module, 23 pins can also be used as GPIO to control external logic. They can
be configured as output or input. When used as input, pull up or pull down resistor can be enabled.
The mapping of the GPIO pins can be found in the pin description in chapter 1.2. For more information
on setting up the GPIO pins, see the
u-blox Short range AT commands manual [1]
.
1.8 Reserved pins (RSVD)
Do not connect reserved (RSVD) pin. The reserved pins can be allocated for future interfaces and
functionality.
1.9 GND pins
Good connection of the module’s GND pins with solid ground layer of the host application board is
required for correct RF performance. It significantly reduces EMC issues and provides a thermal heat
sink for the module.
The following two types of ground (GND) pads are available:
• GND pads and the PCB edge (castellations): Mainly for power supply return path and RF ground.
• Heat dissipation GND pads under the module: Mainly used for dissipation of heat, especially during
intensive Wi-Fi activity.
See the Module footprint and paste mask and Thermal guidelines sections for information about
ground design.
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