SimCom SIM800L User Manual

Smart Machine Smart Decision
SIM800L(MT6261)_Hardware Design_V1.01 4 2016-07-07
4.7.1. Speaker Interfaces Configuration ........................................................................................................ 34
4.7.2. Microphone Interfaces Configuration ................................................................................................. 35
4.7.3. Audio Electronic Characteristic .......................................................................................................... 35
4.7.4. TDD .................................................................................................................................................... 35
4.8. SIM Card Interface.............................................................................................................. 36
4.8.1. SIM Card Application ......................................................................................................................... 36
4.8.2. SIM Card Design Guide ...................................................................................................................... 37
4.8.3. Design Considerations for SIM Card Holder ...................................................................................... 37
4.9. PCM Interface ..................................................................................................................... 39
4.9.1. PCM Interface ..................................................................................................................................... 40
4.10. Keypad Interface ................................................................................................................. 40
4.11. I2C Bus ............................................................................................................................... 42
4.12. General Purpose Input/Output (GPIO) ............................................................................... 43
4.13. ADC .................................................................................................................................... 43
4.14. PWM ................................................................................................................................... 44
4.15. Network Status Indication ................................................................................................... 45
4.16. Operating Status Indication ................................................................................................. 45
4.17. LED Interface ...................................................................................................................... 46
4.18. RF Synchronization Signal ................................................................................................. 46
4.19. Antenna Interface ................................................................................................................ 47
4.19.1. GSM Antenna Interface ................................................................................................................... 47
4.19.2. FM Antenna Interface ...................................................................................................................... 48
5. PCB Layout ........................................................................................................ 50
5.1 Pin Assignment ................................................................................................................... 50
5.2 Principle of PCB Layout ..................................................................................................... 50
5.2.1 Antenna Interface ................................................................................................................................ 51
5.2.2. Power Supply ...................................................................................................................................... 51
5.2.3 SIM Card Interface .............................................................................................................................. 51
5.2.4 Audio Interface .................................................................................................................................... 51
5.2.5 Others .................................................................................................................................................. 51
5.3 Recommended PCB Layout ................................................................................................ 51
6. Electrical, Reliability and Radio Characteristics ........................................... 53
6.1 Absolute Maximum Ratings ............................................................................................... 53
6.2 Recommended Operating Conditions ................................................................................. 53
6.3 Digital Interface Characteristics .......................................................................................... 53
6.4 SIM Card Interface Characteristics ..................................................................................... 53
6.5 SIM_VDD Characteristics .................................................................................................. 54
6.6 VDD_EXT Characteristics.................................................................................................. 54
6.7 VRTC Characteristics ......................................................................................................... 54
6.8 Current Consumption (VBAT=3.8V) ................................................................................. 54
6.9 Electro-Static Discharge...................................................................................................... 55
6.10 Radio Characteristics .......................................................................................................... 56
6.10.1. Module RF Output Power ................................................................................................................ 56
6.10.2. Module RF Receive Sensitivity ....................................................................................................... 57
6.10.3. Module Operating Frequencies ........................................................................................................ 57
SIMCOM CONFIDENTIAL FILE

SimCom SIM800L Specifications

General

Brand	SimCom
Model	SIM800L
Category	Recording Equipment
Language	English