Data Sheet

Smart Machine Smart Decision
SIM800F_Hardware Design_V1.00 49 2015-07-31
5 PCB Layout
Usually, most electronic products with good performance are based on good PCB layout. Poor PCB layout will
lead to lots of issues, like TDD noise, SIM card undetected, etc. The final solution for these problems is to redo
PCB layout. Making good PCB layout will save developing schedule and cost as well.
This section will give some guidelines on PCB layout to eliminate interfere or noise by greatest degree, and save
product development period.
5.1 PIN Assignment
Before the placement of the PCB design, customer should learn well about PIN assignment in order to get
reasonable layout with so many external components. Please refer to the figure below:
Figure 45: Pin assignment