SimCom SIM808 Manuals

SimCom SIM808 Manuals

Manuals and User Guides for SimCom SIM808. We have 1 SimCom SIM808 manual available for free PDF download: Hardware Design

SimCom SIM808 Hardware Design

SimCom SIM808 Hardware Design (67 pages)

Brand: SimCom | Category: Control Unit | Size: 3 MB

Table of Contents

Contents

3
- Table of Contents
  3
Version History

9
1 Introduction

10
2 SIM808 Overview

10
- SIM808 Key Features
  10
- Table 2: Gps Engine Performance
  12
- Operating Modes
  13
- SIM808 Functional Diagram
  14
3 Package Information

15
- Pin out Diagram
  15
- Pin Description
  16
- Package Dimensions
  18
- Figure 4: Recommended Pcb Footprint Outline（Unit: MM
  19
4 GSM Application Interface

20
- Power Supply
  20
  - Power Supply Pin
    21
  - Monitoring Power Supply
    22
- Power On/Down SIM808
  22
  - Power on SIM808
    22
  - Figure 12: Timing of Power on Module
    23
  - Power down SIM808
    24
  - Reset Function
    25
- Power Saving Mode
  26
- Charging Interface
  28
- RTC Backup
  30
- Serial Port and USB Interface
  31
  - Function of Serial Port
    32
  - Serial Port
    32
  - Figure 23: Level Converting by Resistor
    33
  - USB Interface
    34
  - Software Upgrade and Debug
    35
- RI Behaviors
  35
- Audio Interfaces
  36
  - Speaker Interface Configuration
    37
  - Microphone Interfaces Configuration
    37
  - Audio Electronic Characteristics
    38
  - Tdd
    38
- Bluetooth
  39
  - Antenna Interface
    39
- SIM Card Interface
  39
- PCM Interface
  43
  - PCM Multiplex Function
    43
  - PCM Interface
    44
  - LCD Display/Spi Interface
    44
  - SD Card Interface
    45
- Keypad Interface
  45
- Figure 44: Extended Keypad Reference Circuit
  46
- I2C Bus
  47
  - General Purpose Input/Output (GPIO)
    48
- Adc
  48
- Pwm
  49
- Table 29: Adc Specification
  49
- Network Status Indication
  50
- Operating Status Indication
  50
- RF Synchronization Signal
  51
- Antenna Interface
  51
5 GPS Application Interface

52
- GPS Operating Modes
  52
- GPS Power On/Down Scenarios
  53
  - Power on GPS Engine
    53
  - Power down GPS Engine
    53
- GPS Antenna Interface
  53
  - GPS Antenna Choice Consideration
    53
6 Electrical, Reliability and Radio Characteristics

54
7 Manufacturing

61
Appendix

63
- Terms and Abbreviations
  64
- Safety Caution
  65

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