SIM Tech SIMCom SIM868 Series Manuals

SIM Tech SIMCom SIM868 Series Manuals

Manuals and User Guides for SIM Tech SIMCom SIM868 Series. We have 1 SIM Tech SIMCom SIM868 Series manual available for free PDF download: Hardware Design

SIM Tech SIMCom SIM868 Series Hardware Design

SIM Tech SIMCom SIM868 Series Hardware Design (72 pages)

Brand: SIM Tech | Category: GSM/GPRS Modules | Size: 2.72 MB

Table of Contents

Table of Contents
3
1 Introduction

11
2 SIM868 Overview

11
- SIM868 Key Features
  12
- Operating Modes
  15
- Functional Diagram
  16
3 Package Information

17
- Pin out Diagram
  17
- Pin Description
  18
- Package Dimensions
  20
4 Application Modes of SIM868

23
- All-In-One Mode
  23
- Stand-Alone Mode
  24
5 Application Interface of GSM

25
- Power Supply of GSM
  25
- Reference Circuit of GSM Power Supply
  26
- Power On/Off GSM Part
  27
  - Power on GSM
    27
  - Power off GSM
    28
- Power Saving Mode of GSM
  29
  - Minimum Functionality Mode of GSM Part
    29
- Serial Port of GSM
  30
  - Function of Serial Port
    31
  - Serial Interfaces
    31
  - Debug Interface
    33
  - Software Upgrade of GSM
    34
- UART1_RI Behaviors
  34
- Audio Interfaces
  35
- SIM Card Interface
  38
- SD Interface
  42
- I2C Bus
  42
- Adc
  42
- Network Status Indication
  43
- Operating Status Indication
  43
- RF Synchronization Signal
  44
- Antenna Interface of GSM
  44
- Bluetooth Antenna Interface
  46
- Bluetooth Low Energy (BLE)
  46
6 Application Interface of GNSS

48
- GNSS Overview
  48
- Power Supply of GNSS
  48
- Backup Power of GNSS
  48
- Power On/Off GNSS
  49
- Serial Port of GNSS
  50
- Software Upgrade of GNSS
  51
- 1PPS Output
  51
- Antenna Interface
  52
  - Passive Antenna
    52
  - Active Antenna
    53
- Operation Modes of GNSS
  53
- A-Gps
  55
  - Easy Mode
    55
  - Epo
    55
- Fast-Fix
  55
- Multi-Tone AIC
  56
- Sbas
  56
7 PCB Layout

57
- Pin Assignment
  57
- Principle of PCB Layout
  58
  - Antenna Interface
    58
  - Power Supply
    58
  - SIM Card Interface
    58
  - Audio Interface
    58
8 Electrical, Reliability and Radio Characteristics

59
- Absolute Maximum Ratings
  59
- Recommended Operating Conditions
  59
- Digital Interface Characteristics
  59
- SIM Card Interface Characteristics
  60
- SIM_VDD Characteristics
  60
- VDD_EXT Characteristics
  60
- Current Consumption（Gsm_Vbat=4.0V
  60
- Electro-Static Discharge
  61
- Radio Characteristics
  62
9 Manufacturing

64
10 Packaging

66
11 Appendix

68
- Related Documents
  68
- Terms and Abbreviations
  69
- Safety Caution
  71

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