Data Sheet

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

Analog base

band

Digita l base

band

Pow er m anagem ent unit

Radio

Frequency

Power

Supply

Analog Interface

Digita l In te rfa c e

UART

SIM

Audio

ADC

GSM

USB

GPIO

RTC

Figure 1: SIM800C functional diagram