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L76
Quectel L76 Hardware Design
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Manual
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GN
SS
Mo
du
le
Series
L76&L76-L
_H
ard
wa
re
_Design
35
/
59
Pull down
>
100
ms
RE
S
ET_N
UA
R
T
Vali
d
Vali
d
Inva
l
id
Inva
l
id
VC
C
V_B
CK
P
Not ca
r
ed
Fi
gure
17
:
Reset S
equen
ce
1.
Ensure RESET_N is co
nne
cted so
that
it can be used to reset the modules if the modules enter an
abnormal stat
e.
2.
T
he
power domain
of
RESET_
N
is
2.8 V for L76/L76-
L
mo
dules, 1.8
V for L
76
-L(L) modu
le.
NOTE
35
37
Table of Contents
Safety Information
4
About the Document
5
Table of Contents
7
Contents
7
Product Description
11
Overview
11
Features
12
Performance
13
Block Diagram
14
GNSS Constellations
15
Gps
15
Beidou
15
Glonass
15
Galileo
16
Qzss
16
Augmentation System
16
Sbas
16
Agnss
16
Easy
16
Epo
17
Locus
17
Multi-Tone AIC
17
Pin Assignment
19
Power Management
22
Power Unit
22
Power Supply
23
VCC
23
V_Bckp
24
Power Mode
25
Continuous Mode
25
Standby Mode
25
Backup Mode
26
Periodic Mode
27
GLP Mode
28
Alwayslocate™ Mode
29
Power-Up Sequence
30
Power-Down Sequence
31
Application Interfaces
32
I/O Pins
32
Communication Interfaces
32
Anton
34
1Pps
34
System Pin
35
Design
37
Recommended Footprint
37
Antenna Design
38
Antenna Specification
38
Antenna Selection Guide
38
Active Antenna Reference Design
39
Passive Antenna Reference Design
41
Coexistence with Cellular Systems
42
In-Band Interference
43
Out-Of-Band Interference
44
Ensuring Interference Immunity
44
Electrical Specification
46
Absolute Maximum Ratings
46
Recommended Operating Conditions
47
ESD Protection
48
Mechanical Dimensions
49
Top, Side and Bottom View Dimensions
49
Top and Bottom Views
50
Product Handling
51
Packaging
51
Tapes
51
Reels
52
Storage
52
Manufacturing and Soldering
53
Labelling Information
56
Appendix References
57
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User Guide
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Quectel L76 Specifications
General
Brand
Quectel
Model
L76
Category
Motherboard
Language
English
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