User's Manual

Smart Machine Smart Decision
SIM868_Hardware_Design_V1.00 48 2016-06-20
5. PCB Layout
This section will give some guidelines on PCB layout, in order to eliminate interfere or noise.
5.1 Pin Assignment
Before PCB layout, we should learn about pin assignment in order to get reasonable layout with so many
external components. Following figure is the overview of pin assignment of the module.
Figure 41: PIN assignment