Hardware Design SIM800L (SIMCom) - 3

Smart Machine Smart Decision Contents
Version History. 10
1. Introduction. 11 2. SIM800L Overview. 11 2.1.
2.2.
2.3. 3. Package Information . 15 3.1.
3.2.
3.3. 4. SIM800L Key Features. 11
Operating Mode .13
Functional Diagram.14 Pin out Diagram .15
Pin Description.16
Package Dimensions .19 Application Interface. 21 4.1.
4.1.1.
4.1.2. 4.2.
4.2.1.
4.2.2.
4.2.3. 4.3.
4.3.1.
4.3.2.
4.3.3. 4.4.
4.5.
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5 4.6.
4.7.
4.7.1.
4.7.2.
4.7.3.
4.7.4. 4.8.
4.8.1.
4.8.2. Power Supply .21
Power supply pin. 22
Monitoring Power Supply . 23 Power on/down Scenarios.23
Power on SIM800L . 23
Power down SIM800L . 24
Reset Function. 26 Power Saving Mode .27
Minimum Functionality Mode . 27
Sleep Mode (AT+CSCLK=1) . 28
Wake Up SIM800L from Sleep Mode (AT+CSCLK=1). 28 RTC Backup.28
Serial Port and USB Interface.29
Function of Serial Port . 30
Serial Interfaces. 30
Debug Interface. 33
Software Upgrade and Debug . 33
Multiplexing function of serial port . 34 RI Behaviors .35
Audio Interfaces.36
Speaker Interfaces Configuration. 37
Microphone Interfaces Configuration . 37
Audio Electronic Characteristic . 38
TDD . 38 SIM Card Interface.38
SIM Card Application . 39
SIM Card Design Guide. 40 SIM800L_Hardware_Design_V1.00 3 2013-08-20