Ebyte E108-GN01 User manual

E108-GN01 User Manual
GK9501 GPS Module

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2020，Chengdu Ebyte Electronic Technology Co., Ltd
1
CONTENTS
1. PRODUCT OVERVIEW................................................................................................................... 2
1.1 PRODUCTION INTRODUCTION.........................................................................................................................................2
1.2 FEATURES...................................................................................................................................................................... 2
1.3 APPLICATION................................................................................................................................................................. 2
2 QUICK START...................................................................................................................................3
3 SPECIFICATION AND PARAMETERS...........................................................................................5
3.1 GPS PERFORMANCE...................................................................................................................................................... 5
3.2 BASIC PARAMETER........................................................................................................................................................ 6
4 DIMENSION AND PIN DEFINITION..............................................................................................7
5 HARDWARE DESIGN...................................................................................................................... 8
6. OPERATING MODE.........................................................................................................................9
7. PRODUCTION GUIDANCE............................................................................................................ 9
7.1 REFLOW SOLDERING TEMPERATURE..............................................................................................................................9
7.2 REFLOW SOLDERING CURVE........................................................................................................................................ 10
8 E108 SERIES.................................................................................................................................... 10
9 ANTENNA GUIDANCE.................................................................................................................. 10
10 PACKAGE FOR BULK ORDER................................................................................................... 11
ABOUT US.......................................................................................................................................... 11

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2020，Chengdu Ebyte Electronic Technology Co., Ltd
2
1. Product overview
1.1 Production introduction
E108-GN01 is a high-performance, highly integrated, low-power, low-cost
multi-mode satellite positioning and navigation chip. It can be used for GNSS
positioning applications such as car navigation, smart wearable, and drone. It also
provides software and hardware interfaces compatible with other module manufacturers,
which greatly reduces the user's development cycle and supports BDS / GPS /
GLONASS / GALILEO / QZSS / SBAS.
It adopts the integrated design of RF baseband, integrates DC / DC, LDO, RF front-end, low-power application
processor, RAM, Flash storage, RTC, and power management, etc. It supports crystal or external pin clock input. A coin
cell battery or a farad capacitor supplies power to the RTC and backup RAM to reduce the time to first fix. It also
supports multiple ways to connect with other peripherals, such as UART, I2C, SPI or GPIO.
1.2 Features
BDS/GPS/GLONASS/GALILEO/QZSS/SBAS joint positioning and single system independent positioning;
10Hz D-GNSS differential positioning, A-GNSS assisted positioning, ephemeris prediction, DR integrated
navigation application, the fastest data update rate is 10Hz;
32-bit application processor, with a maximum frequency of 133MHz, for dynamic frequency adjustment;
PPS output;
Built-in reset controller;
UART 、SPI 、I2C 、GPIO;
RTC: Support 32.768 KHz ± 20 ppm crystal, 1.1V RTC clock output, support external signal wake-up；
Output format: NMEA0183 V4.1 and previous versions, the maximum fixed update frequency can reach 10Hz；
High sensitivity: -149dBm for cold start, -162dBm for hot start, -166dBm for tracking；
Ultra-low power consumption: capture 30mA, track 20mA;
The software and hardware are compatible with other manufacturers, which greatly reduces the user's development
cycle.
1.3 Application
Vehicle positioning and navigation equipment
Wearable devices, such as GPS trackers;
UAV positioning, industrial computers, etc
Industrial equipment that requires GNSS positioning or navigation.

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
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2 Quick start
For testing E108-GN01-TB，if there is no board available, please refer to schematic of it in reference file.
1. After the GPS antenna is connected, connect the computer with a USB cable at the same time. There is a
USB port on the opposite side of the antenna of the board, and then press the switch button to turn on.
2. Note that when using an active antenna, the two RF_POWER pins need to be shorted with jumpers.
3. You can open the serial port assistant to view the data reported by the serial port, or you can use our naviTrack to
view it.
The baud rate is set to 9600 bps. Data will be reported after the serial port is closed. Common output formats are as
follows:

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
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GGA: time, location, number of satellites;
GSA: GPS receiver operating mode, satellite used for positioning, DOP value, positioning status;
GSV: visible GPS satellite information, elevation, azimuth, signal-to-noise ratio;
RMC: time, date, location, speed;
VTG: ground speed information;
For detailed meaning, please refer to Section 3 NMEA0183 protocol;
For ease of use, we recommend using the exclusive tool TaviTrack for debugging. For detailed usage, please refer to
the “naviTrack User Manual”
1. Run naviTrack. With administrator privileges, run as above;
2. Select the corresponding com port and click connect. After the connection is successful, you can see the
reported data in the NMEA window.
For detailed meaning, please refer to the description in the third section of NMEA0183 protocol;
3. After positioning, you can get the latitude and longitude information in the $ GPRMC field reported by the
serial port. For more detailed tool usage information, please refer to the manual in the toolkit.

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2020，Chengdu Ebyte Electronic Technology Co., Ltd
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3 Specification and parameters
3.1 GPS performance
Type
Indicator
Typ.
Unit
Positioning time
（test condition 1）
Cold start
27.5
S
Hot start
＜1
S
Re-capture
＜1
S
A-GNSS
＜10
S
Sensitivity
（test condition 2）
Cold start
-148
dBm
Hot start
-162
dBm
Re-capture
-164
dBm
Follow
-166
dBm
Accuracy
（test condition 3）
Horizontal positioning
accuracy
2.5
m
Height positioning
accuracy
3.5
m
Speed positioning accuracy
0.1
m/s
Timing accuracy
30
ns
Power consumption
（test condition 4）
Capture current
30
mA
Follow current
20
mA
Operating temperature
--
-35℃--85℃
--
Storage temperature
--
-55℃--100℃
--
Humidity
--
5%--95%RH（No
condensation）
--
Note: The above results are for GPS / BeiDou dual-mode working mode.
[Test condition 1]: The number of receiving satellites is greater than 6, the signal strength of all satellites is -130dBm, the
average value is 10 times, and the positioning error is 10 meters.
[Test condition 2]: The noise figure of the external LNA is 0.8, the number of receiving satellites is greater than 6, and
the received signal strength value is locked or not lost within five minutes.
[Test condition 3]: Open and unobstructed environment, continuous power-on test for 24 hours, 50% CEP.
[Test condition 4]: The number of receiving satellites is greater than 6, and the signal strength of all satellites is
-130dBm.

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
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3.2 Basic parameter
Type
Details
Protocol
NMEA0183 V4.1 and previous version，max updating frequency is 10Hz
GPS system
BDS/GPS/GLONASS/GALILEO/QZSS/SBAS
Peripheral interface
UART（TXD/RXD）or GPIO
Low power
Available
Ultra-low power
Available
Periodical low power
Available
Direct low power
Available
Parameter setting software
Available
Certification
Pending
Size
16*12*2.4mm(L*W*H)
Package
Half hole（SMT）
Power supply
VCC
2.8V—4.3V（3.3V）
UART
Communication level
2.8V
Baud rate（bps）
9600（default）、115200（customizable）
Data bit
8bit
Stop bit
1
Parity
None

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
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4 Dimension and pin definition
No.
Name
Details
1
NC
N/A
2
NC
N/A
3
1PPS
Positioning indicator, square wave will be output when positioning is
successful
4
EINT3
External interrupt 3，default：pull down，8 ma driving current
5
FORCE_ON
Sleep wake-up pin, pulled high when the module enters ultra-low
power consumption
This pin exits the ultra-low power mode (the level of this pin is
1.1V, if the control pin level is not 1.1V,
Partial pressure treatment is required)
6
EINT0
External interrupt 0，default：pull down，8 ma driving current
7
NC
N/A
8
RSTN
Reset pin，default pull up，pull down for resetting.
9
VCC_RF
RF power output，to power active antenna（equal to VCC）
10
GND
Ground
11
RF_IN
RF input
12
GND
Ground
13
GND
Ground
14
NC
N/A
15
NC
N/A

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
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16
RSTN
Reset pin，default pull up，pull down for resetting.
17
EINT1
External interrupt 1，default：pull down，8 ma driving current
18
TX1
UART1 output（N/A，2.8V communication level）
19
RX1
UART1 input（N/A，2.8V communication level）
20
TXD
UART output（AT port，2.8V communication level）
21
RXD
UART input（AT port，2.8V communication level）
22
VBKP
RTC power input，RTC must be powered so module can work（2V-4.2V）
23
VCC
Power supply（2.8V—4.2V）
24
GND
Ground
5 Hardware design
Check E108-GN01-TB-SCH in related file for schematic；
It is recommended to use a DC stabilized power supply. The power supply ripple factor is as small as possible, and
the module needs to be reliably grounded.
Please pay attention to the correct connection of the positive and negative poles of the power supply.
Reverse connection may cause permanent damage to the module；
Please check the power supply to ensure it is within the recommended voltage otherwise when it exceeds the
maximum value the module will be permanently damaged；
Please check the stability of the power supply, the voltage cannot be fluctuated frequently；
When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the
margin, so the whole machine is beneficial for long-term stable operation.
The module should be as far away as possible from the power supply, transformers, high-frequency wiring and other
parts with large electromagnetic interference
High-frequency digital routing, high-frequency analog routing, and power routing must be avoided under the
module. If it is necessary to pass through the module, assume that the module is soldered to the Top Layer, and the
copper is spread on the Top Layer of the module contact part(well grounded), it must be close to the digital part of
the module and routed in the Bottom Layer；
Assuming the module is soldered or placed over the Top Layer, it is wrong to randomly route over the Bottom Layer
or other layers, which will affect the module's spurs and receiving sensitivity to varying degrees；
It is assumed that there are devices with large electromagnetic interference around the module that will greatly
affect the performance. It is recommended to keep them away from the module according to the strength of the
interference. If necessary, appropriate isolation and shielding can be done；
Assume that there are traces with large electromagnetic interference (high-frequency digital, high-frequency analog,
power traces) around the module that will greatly affect the performance of the module. It is recommended to stay
away from the module according to the strength of the interference
If necessary, appropriate isolation and shielding can be done.
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, still a
risk of damage)；
Try to stay away from some physical layers such as TTL protocol at 2.4GHz , for example: USB3.0；
The mounting structure of antenna has a great influence on the performance of the module. It is necessary to ensure
that the antenna is exposed, preferably vertically upward. When the module is mounted inside the case, use a good

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
9
antenna extension cable to extend the antenna to the outside；
6. Operating mode
1. Please refer to the “GK9501 Input and Output Format” in the data package for the command format of the
module-related functions.
2. This module supports AGPS settings. For detailed setting methods, please refer to the “Goke AGPS User Manual” in
the package.
7. Production Guidance
7.1 Reflow soldering temperature
Profile Feature
Sn-Pb Assembly
Pb-Free Assembly
Solder Paste
Sn63/Pb37
Sn96.5/Ag3/Cu0.5
Preheat Temperature min （Tsmin）
100℃
150℃
Preheat temperature max (Tsmax)
150℃
200℃
Preheat Time (Tsmin to Tsmax)(ts)
60-120 sec
60-120 sec
Average ramp-up rate(Tsmax to Tp)
3℃/second max
3℃/second max
Liquidous Temperature (TL)
183℃
217℃
Time（tL）Maintained Above（TL）
60-90 sec
30-90 sec
Peak temperature（Tp）
220-235℃
230-250℃
Aveage ramp-down rate（Tp to Tsmax）
6℃/second max
6℃/second max
Time 25℃ to peak temperature
6 minutes max
8 minutes max

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
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7.2 Reflow soldering curve
8 E108 Series
Model
RF IC
Satellite
Package
Size
mm
Communication
interface
E108-GN01-V1.0
GK9501
BDS/GPS/GLONASS/GALILEO/QZSS/SBAS
SMD
16*12*2.4
UART/GPIO
9 Antenna guidance
Model
Type
Frequency
Hz
Interface
Gain
dBi
Size
mm
Feeder
cm
Function
TXGB-AZ-300
Sucker
antenna
1575.042±1.023MHz~1561.
098±2.046MHz
SMA-J
4.0
50*38*16.7
300
Directional antenna， LNA
gain 28dBi
TXGPS-XP-300
Sucker
antenna
For Beidou
/GPS/Galileo/Glonass
SMA-J
5.0
100*30
300
Small, cost effective

Chengdu Ebyte Electronic Technology Co., Ltd E108-GN01 User Manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co., Ltd
11
10 Package for bulk order
About Us
Technical support: supp[email protected]m;
Documents and RF Setting download link: www.ebyte.com
Tel：[phone]
Fax：[phone]
Web：www.ebyte.com
Address: Building B5, Mould Industrial Park, 199# Xiqu Avenue, Chengdu, Sichuan