Quectel SC650T Manuals

Manuals and User Guides for Quectel SC650T. We have 1 Quectel SC650T manual available for free PDF download: Hardware Design

Quectel SC650T Hardware Design

Quectel SC650T Hardware Design (113 pages)

Brand: Quectel | Category: Control Unit | Size: 3.12 MB

Table of Contents

About the Document
3
Table of Contents
4
Contents
4
Introduction
14
Safety Information
15
Product Concept
16
General Description
16
Key Features
17
Evaluation Board
20
Application Interfaces
21
General Description
21
Pin Assignment
22
Pin Description
23
Power Supply
40
Power Supply Pins
40
Decrease Voltage Drop
40
Reference Design for Power Supply
41
Turn on and off Scenarios
42
Turn on Module Using the PWRKEY
42
Turn off Module
44
VRTC Interface
44
Power Output
45
Battery Charge and Management
46
USB Interface
48
UART Interfaces
50
U)SIM Interfaces
52
SD Card Interface
54
GPIO Interfaces
56
I2C Interfaces
60
I2S Interface
60
SPI Interfaces
61
ADC Interfaces
62
Vibrator Drive Interface
62
LCM Interfaces
63
Touch Panel Interfaces
67
Camera Interfaces
68
Design Considerations
72
Flashlight Interfaces
74
Sensor Interfaces
75
Audio Interfaces
75
Reference Circuit Design for Microphone Interfaces
77
Reference Circuit Design for Earpiece Interface
78
Reference Circuit Design for Headphone Interface
79
Reference Circuit Design for Loudspeaker Interface
79
Audio Interfaces Design Considerations
79
Emergency Download Interface
80
LED Driver Interfaces
80
Wi-Fi and BT
82
Wi-Fi Overview
82
Wi-Fi Performance
82
BT Overview
84
BT Performance
85
Gnss
86
GNSS Performance
86
GNSS RF Design Guidelines
87
Antenna Interfaces
88
Main/Rx-Diversity Antenna Interfaces
88
Main and Rx-Diversity Antenna Interfaces Reference Design
89
Reference Design of RF Layout
90
Wi-Fi/Bt Antenna Interface
92
GNSS Antenna Interface
92
Recommended Circuit for Passive Antenna
93
Recommended Circuit for Active Antenna
93
Antenna Installation
94
Antenna Requirements
94
Recommended RF Connector for Antenna Installation
95
Electrical, Reliability and Radio Characteristics
97
Absolute Maximum Ratings
97
Power Supply Ratings
97
Operation and Storage Temperatures
98
Current Consumption
98
RF Output Power
100
RF Receiving Sensitivity
101
Electrostatic Discharge
102
Mechanical Dimensions
103
Mechanical Dimensions of the Module
103
Recommended Footprint
105
Top and Bottom View of the Module
106
Storage, Manufacturing and Packaging
107
Storage
107
Manufacturing and Soldering
108
Packaging
109
Appendix A References
111

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