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EC25-V
Quectel EC25-V User Manual
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LTE
Module
Series
EC25-V
User
Manual
EC25-V_
User_Manual
Confidentia
l / Released
29
/
69
PWRKEY
S1
Close to S1
TVS
Figure
11
: Turn on the
Module Usi
ng Key
stroke
The turn on s
cenario is
illustrat
ed in the follow
ing figure.
V
IL
≤ 0.5V
V
IH
≥ 1.3V
VBAT
PWRKEY
≥ 100ms
RESET_N
STATUS
(OD)
Inactive
Active
UART
NOTE
Inactive
Active
USB
TBD
TBD
TBD
Figure
12
: Timing of T
urning
on Module
Make sure that VBA
T
is stable before pulling down P
WRKEY
pin. The time between them is
no less than
30ms.
NOTE
29
31
Table of Contents
About the Document
3
Contents
4
Table of Contents
4
1 Introduction
8
Safety Information
8
2 Product Concept
10
General Description
10
Directives and Standards
11
FCC Statement
11
Key Features
11
Functional Diagram
13
Evaluation Board
14
3 Application Interface
15
General Description
15
Pin Assignment
15
Figure 2: Pin Assignment (Top View)
16
Pin Description
17
Operating Modes
22
Power Saving
23
Sleep Mode
23
UART Application
23
USB Application with USB Remote Wakeup Function
24
USB Application with USB Suspend/Resume and RI Function
24
USB Application Without USB Suspend Function
25
Airplane Mode
26
Power Supply
26
Power Supply Pins
26
Decrease Voltage Drop
27
Reference Design for Power Supply
28
Monitor the Power Supply
29
Turn on and off Scenarios
29
Turn on Module Using the PWRKEY
29
Figure 11: Turn on the Module Using Keystroke
30
Turn off Module
31
Turn off Module Using the PWRKEY Pin
31
Turn off Module Using at Command
31
Reset the Module
31
Table 8: Reset_N Pin Description
32
USIM Card Interface
33
Figure 17: Reference Circuit of 8-Pin Usim Connector
34
USB Interface
35
Figure 19: Reference Circuit of Usb Application
36
UART Interface
37
Table 13: Logic Levels of Digital I/O
38
PCM and I2C Interface
39
Table 14: Pin Definition of Pcm and I2C Interface
40
Figure 24: Reference Circuit of Pcm Application with Audio Codec
41
ADC Function
42
Status
43
Behavior of the RI
44
Table 20: Behavior of the Ri
45
4 GNSS Receiver
46
Layout Guideline
47
5 Antenna Interface
48
GNSS Antenna Interface
49
Antenna Installation
50
Install the Antenna with RF Connector
51
Figure 30: Mechanicals of Uf.l-Lp Connectors
52
Figure 31: Space Factor of Mated Connector (Unit: MM)
53
6 Electrical, Reliability and Radio Characteristics
54
Operating Temperature
55
RF Receiving Sensitivity
56
7 Mechanical Dimensions
57
Figure 33: Module Bottom Dimensions (Bottom View)
58
Footprint of Recommendation
59
Top View of the Module
60
8 Storage and Manufacturing
61
Packaging
62
Figure 38: Carrier Tape
63
9 Appendix A Reference
64
4
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Quectel EC25-V Specifications
General
Brand
Quectel
Model
EC25-V
Category
Control Unit
Language
English
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