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SIM800L 数据表(PDF) 31 Page - SIMCom

部件名 SIM800L
功能描述  Hardware Design_V2.02
PDF  73 Pages
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制造商  SIMCOM [SIMCom]
网页  https://www.simcom.com
标志 SIMCOM - SIMCom

SIM800L 数据表(HTML) 31 Page - SIMCom

Back Button SIM800L Datasheet HTML 27Page - SIMCom SIM800L Datasheet HTML 28Page - SIMCom SIM800L Datasheet HTML 29Page - SIMCom SIM800L Datasheet HTML 30Page - SIMCom SIM800L Datasheet HTML 31Page - SIMCom SIM800L Datasheet HTML 32Page - SIMCom SIM800L Datasheet HTML 33Page - SIMCom SIM800L Datasheet HTML 34Page - SIMCom SIM800L Datasheet HTML 35Page - SIMCom Next Button
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Smart Machine Smart Decision
1K
5.6K
RXD
TXD
RTS
CTS
GPIO
GPIO
EINT
DTE
(3.3V)
5.6K
5.6K
1K
1K
1K
1K
1K
1K
Module
TXD
RXD
RTS
CTS
DTR
DCD
RI
GND
GND
Figure 21: Resistor matching circuit
If the voltage of UART is 3V or3.3V, the following reference circuits are recommended:
Figure 22 : Diode isolation circuit
Note: please make sure the minimum of client high limit should be less than 2.8V minus the diode drop.
If the voltage of UART is 5V, the following reference circuits are recommended:
Figure 23: TX level matching circuit
SIM800H&SIM800L_Hardware Design_V2.02
31
2015-07-27



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