Sim800 Functional Diagram - SimCom SIM800 Hardware Design

2.3. SIM800 Functional Diagram

The following figure shows a functional diagram of SIM800:

GSM baseband engine

PMU

RF part

Antenna interfaces

Other interfaces
Power
Supply
RTC
Analog
Interface
Audio
ADC
SIM800_Hardware Design_V1.10
Power Management Unit
Analog
Baseband Baseband
Figure 1: SIM800 functional diagram
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Smart Machine Smart Decision
Radio
Frequency
Interface
Digital
GSM
BT
Digital
GPIOs
UART
SIM
USB
KEYPAD
PCM
2018-08-13