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SIM800L Datasheet(PDF) 35 Page - SIMCom

No. de pieza SIM800L
Descripción Electrónicos  Hardware Design_V2.02
PDF  73 Pages
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Fabricante Electrónico  SIMCOM [SIMCom]
Página de inicio  https://www.simcom.com
Logo SIMCOM - SIMCom

SIM800L Datasheet(HTML) 35 Page - SIMCom

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Figure 29: RI behaviour of URC or receive SMS
However, if the module is used as caller, the RI will remain high. Please refer to the following figure.
Figure 30: RI behaviour as a caller
4.7. Audio Interfaces
SIM800H&SIM800L provides two analog inputs (MIC1P/1N; MIC2P/2N), which could be used for electret
microphone. The module also provides two analog outputs (SPK1P/1N; SPK2P/2N).
Table 13: Audio interface definition
Pin name
Pin number
Function
MIC1P
52
Main Audio input positive
MIC1N
12
Main Audio input negative
SPK1P
53
Main Audio output positive
Main
SPK1N
13
Main Audio output negative
MIC2P
9
Secondary Audio input positive
MIC2N
10
Secondary Audio input negative
SPK2P
51
Secondary Audio output positive
Secondary
SPK2N
11
Secondary Audio output negative
SPK1P/1N output can directly drive 32Ω receiver, SIM800H&SIM800L internal has class-AB audio amplifier,
the following table is class-AB performance:
SIM800H&SIM800L_Hardware Design_V2.02
35
2015-07-27



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