Smart Machine Smart Decision
SIM800C_Hardware_Design_V1.02
12
2015-4-27
2.4.
Functional Diagram
The following figure shows a functional diagram of SIM800C:
GSM baseband
GSM RF
Antenna interface
Other interface
A nalog base
band
D igital base
band
P ow er m anagem ent unit
Radio
Frequency
P ow er
S upply
A nalog Interface
D igital Interface
U A R T
S IM
Audio
A D C
G S M
U S B
G P IO
B T
R T C
Figure 1: SIM800C functional diagram
