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GLOBALSAT GPS Module
User Manual
Product No : EM-5318
Version 1.0
Issue Date
2013/06/05
APPR
Ray
GlobalSat WorldCom Corporation
16F., No. 186, Jian-Yi Road, Chung-Ho City, Taipei
Hsien 235, Taiwan
Tel: 886-2-8226-3799 Fax: 886-2-8226-3899
E-mail : service@globalsat.com.tw
Website: www.globalsat.com.tw
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EM-5318
High Performance GPS Module
Product Description
Product Description
EM-5318 GPS module features high sensitivity, low power and ultra small form factor. This GPS
module is powered by SiRF Star IV, it can provide you with superior sensitivity and performance
even in urban canyon and dense foliage environment. With SiRF CGEE (Client Generated
Extended Ephemeris) technology, it predicts satellite positions for up to 3 days and delivers
CGEE-start time of less than 15 seconds under most conditions, without any network assistance.
Besides, Micro Power Mode allows GPS module to stay in a hot-start condition nearly
continuously while consuming very little power. EM-5318 is suitable for the following applications:
Automotive navigation
Personal positioning
Fleet management
Mobile phone navigation
Marine navigation
Notebook navigation
Product Features
SiRF Star IV high performance GPS Chipset
Very high sensitivity (Tracking Sensitivity: chipset -163dBm )
Extremely fast TTFF (Time To First Fix) at low signal level
Support UART(bidirectional transmission)/I2C(unidirectional transmission)
interface( Default UART)
Build-in MMCX connector for external active antenna.
Compact size (30.0mm x 30.0mm x 4.8mm) suitable for space-sensitive application
Support NMEA 0183 V3.0 (GGA, GSA, GSV, RMC, VTG, GLL, ZDA)
Support OSP protocol
Micro Power Mode(MPM) : Reduce MPM current consumption from <500 uA to < 125 uA
Support SBAS (WASS, EGNOS, MSAS, GAGAN, QZSS)
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EM-5318
High Performance GPS Module
Product Block Diagram
Product Pin Description
PIN Number(s) Name Type Description Note
1
2
3
4
5
VCC P
GND P
TIMEPULSE O
BOOTSEL I
TXD O
This is the main power supply to the engine
board. (3.3Vdc to 5.5Vdc)
Ground
This pin provides one pulse-per-second
output from the board, which is synchronized
to GPS time. This is not available in Trickle
Power mode
Set this pin to high for programming flash.
This is the main transmits channel for
outputting navigation and measurement data
to user’s navigation software or user written
software. Baud rate based on flash memory
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. If do not use it, Just NC.
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EM-5318
High Performance GPS Module
6 RXD I
setting, Output TTL level referred VCC
This is the main receive channel for receiving
software commands to the engine board from
SiRFdemo software or from user written
software. Baud rate based on flash memory
setting.
7
GPIO I/O
setting, and voltage level is 1.8V.
This is the battery backup power input for the
SRAM and RTC when main power is off.
Without the external backup battery,
EM-5318 will always execute a cold star after
This GPIO function based on flash memory
8
VBAT P
turning on. To achieve the faster start-up
offered by a hot or warm start, a battery
backup must be connected. The battery
voltage should be between 2.0V and 3.5V.
This pin is input low active. This Module has
9 RESET I
internal Power on Reset circuit.
10 NC O EM-5318 reserved pin, Just NC.
MMCX
connector
MMCX Connect to external active antenna
I
for receiving GPS signal.
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EM-5318
High Performance GPS Module
Electrical Specification
Absolute Maximums Ratings
Parameter Min. Typ. Max. Conditions Unit
Power
Power supply voltage(VCC) 3.3 3.3 5.5 V
Backup battery supply 2.0 3.5 V
Main power supply Current 45 50 55 GPS is not 3D Fixed. mA
Backup battery supply Current 35 38 45 GPS is 3D Fixed. uA
MMCX output power 2.8 For external active
antenna
DC Electrical characteristics
Parameter Symbol Min. Typ.
VTO VCC V
VRI 3.6 V
IOH 2 mA
IOL 2 mA
Max. Conditions Units
Receiver Performance
-163dBm
-160 dBm
< 35s
<15s (with CGEE)
Sensitivity
Chipset Tracking :
Chipset Autonomous acquisition :
Cold Start – Autonomous
V
Time-To-First-Fix
Horizontal Position Accuracy
Velocity Accuracy
Reacquisition 0.1 second, average
NMEA Update Rate
Maximum Altitude < 18,000 meter
Maximum Velocity < 515 meter/ second
1
Warm Start – Autonomous
Hot Start – Autonomous
4
Autonomous < 2.5m
Speed
5
Heading
Output data format based on SPI flash memory setting
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2
3
< 35s
< 15s(with CGEE)
< 1s
< 0.01 m/s
< 0.01 degrees
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EM-5318
High Performance GPS Module
Maximum Acceleration < 4G
<Note>
1. 50% -130dBm Fu 0.5ppm Tu ±2s Pu 30Km
2. Commanded Warm START
3. Commanded Hot START
4. 50% 24hr static, -130dBm
5. 50% @ 30m/s
Environmental Characteristics
Parameter Min Typ Max Unit
Humidity Range 5 95 % non-condensing
Operation Temperature -40 25 85
Storage Temperature -40 85
℃
℃
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EM-5318
High Performance GPS Module
Package Dimensions
Type 10-pin holes
Dimensions 30.0 mm * 30.0 mm * 4.8 mm ±0.2mm
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EM-5318
High Performance GPS Module
Wafer Dimensions(mm)
MMCX connector Dimensions(mm)
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EM-5318
High Performance GPS Module
Reversion history
Reversion Date Name Status / Comments
V1.0 20130605 Mason Initial Version
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