Quectel M20 Manuals

Quectel M20 Manuals

Manuals and User Guides for Quectel M20. We have 2 Quectel M20 manuals available for free PDF download: Hardware Design, User Manual

Quectel M20 Hardware Design

Quectel M20 Hardware Design (82 pages)

Cellular Engine

Brand: Quectel | Category: GSM/GPRS Modules | Size: 1.94 MB

Table of Contents

Table of Contents
3
Revision History
9
1 Introduction

10
- Related Documents
  10
- Terms and Abbreviations
  11
- Safety Caution
  13
2 Product Concept

15
- Key Features
  15
- Functional Diagram
  17
- Evaluation Board
  18
3 Application Interface

19
- Pin Description
  19
- Operating Modes
  23
- Power Supply
  24
  - Power Supply Pins
    26
  - Minimizing Power Losses
    26
  - Monitoring Power Supply
    27
- Power up and Power down Scenarios
  27
  - Turn on
    27
  - Turn off
    30
  - Restart Module Using the PWRKEY Pin
    33
- Charging Interface
  34
- Power Saving
  41
  - Minimum Functionality Mode
    41
  - SLEEP Mode
    41
  - Wake up Module from the SLEEP Mode
    42
- Summary of State Transition (Except SLEEP Mode)
  42
- RTC Backup
  42
- Serial Interface
  44
  - Function of Serial Port 0 & Serial Port 1
    46
  - Software Upgrade and Software Debug
    47
- Audio Interfaces
  49
- SIM Card Interface
  56
  - SIM Card Application
    56
  - Design Considerations for SIM Card Holder
    58
- Adc
  60
- Behavior of the Pin RI0
  60
- Network Status Indication
  62
4 Antenna Interface

63
- Antenna Installation
  63
  - Antenna Connector
    63
  - Antenna Pad
    64
- RF Output Power
  65
- RF Receiving Sensitivity
  65
- Operating Frequency
  65
5 Electrical, Reliability and Radio Characteristics

66
- PIN Assignment of the Module
  66
- Absolute Maximum Ratings
  67
- Operating Temperatures
  67
- Power Supply Ratings
  67
- Current Consumption
  68
- Electro-Static Discharge
  71
6 Product Information

72
7 Mechanical Dimension

73
Appendix A: GPRS Coding Schemes

80
Appendix B: GPRS Multi-Slot Classes

81

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Quectel M20 User Manual

Quectel M20 User Manual (29 pages)

Brand: Quectel | Category: GSM/GPRS Modules | Size: 1.89 MB

Table of Contents

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