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LC79D
Quectel LC79D User Manual
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GNSS
Module
Series
LC79D
Hardware
Design
LC79D_Har
dware_D
esign
14
/ 42
3
Application I
nterfaces
LC79D
is
designed
w
ith
28
pins
(18
LCC
pi
ns
and
10
LGA
pins)
thr
ough
which
the
module
can
be
m
ount
ed
to the moth
erboard of a
ny t
erminal.
3.1.
Pin A
ssignment
T
X
D
/
SPI
_
CLK
G
ND
24
B
O
O
T
RE
SE
RV
E
D
RE
SE
RV
E
D
G
ND
RX
D
/
SPI
_
CS
1
PPS
NS
T
A
NDB
Y
RE
S
E
RV
E
D
V
CC
RE
S
E
RV
E
D
RE
S
E
RV
E
D
I2
C_
S
CL
INT
I2
C_
S
DA
RE
S
E
RV
E
D
V
CC
_
RF
RF
_
IN
G
ND
LNA
_
EN
G
ND
RT
S/
SPI
_MIS
O
RE
Q
RD
Y
RE
S
E
RVE
D
AP
_RE
Q
CT
S/
SPI
_M
O
S
I
9
1
2
3
4
5
6
7
8
10
18
17
16
15
14
13
12
11
25
26
27
28
19
20
21
22
23
LC
79
D
To
p
V
iew
G
ND
P
O
W
E
R
RE
S
E
RV
E
D
G
P
IO
B
O
O
T
A
NT
Figure 2:
Pin A
ssignment
14
16
Table of Contents
About the Document
3
Contents
4
Table of Contents
4
1 Introduction
8
Safety Information
8
2 Product Concept
9
General Description
9
Product Variants
10
UDR Technology
10
Key Features
11
Block Diagram
12
Evaluation Board
13
Supported Protocols
13
3 Application Interfaces
15
Pin Assignment
15
Pin Description
16
Power Supply
19
Operation Modes
20
Full on Mode
20
Sleep Mode
21
Standby Mode
21
UART Interface
22
SPI Interface
23
I2C Interface
24
Boot Interface
25
4 Antenna Interfaces
27
Antenna Specifications
27
Recommended Antenna Reference Designs
28
Antenna Selection Guide
28
Active Antenna Reference Design
28
Passive Antenna Reference Design
29
5 Electrical, Reliability and Radio Characteristics
31
Absolute Maximum Ratings
31
Operating Conditions
32
Current Consumption
32
ESD Protection
32
6 Mechanical Dimensions
34
Mechanical Dimensions of the Module
34
Recommended Footprint
36
Top and Bottom Views
37
7 Storage, Manufacturing, and Packaging
38
Storage
38
Manufacturing and Soldering
39
Tape and Reel Packaging
40
8 Appendix A References
42
4
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Quectel LC79D Specifications
General
Brand
Quectel
Model
LC79D
Category
Control Unit
Language
English
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