Global Sat EM-5318 Manuale utente

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GLOBALSAT GPS Module

User Manual

Product No : EM-5318

Version 1.0

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

Issue Date

2013/06/05

APPR

Ray

CHECK

PREPARE

Mason

EM-5318

High Performance GPS Module

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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)

EM-5318

High Performance GPS Module

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Product Block Diagram

Product Pin Description

PIN Number(s)

Name Type

Description Note

1 VCC P This is the main power supply to the engine

board. (3.3Vdc to 5.5Vdc)

2 GND P Ground

3 TIMEPULSE O

This pin provides one pulse-per-second

output from the board, which is synchronized

GPS

time.

This

not

available

Trickle

Power

mode

. If do not use it, Just NC.

4 BOOTSEL I Set this pin to high for programming flash.

5 TXD O

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

EM-5318

High Performance GPS Module

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setting, Output TTL level referred VCC

6 RXD I

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 This GPIO function based on flash memory

setting, and voltage level is 1.8V.

8 VBAT P

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

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.

9 RESET I This pin is input low active. This Module has

internal Power on Reset circuit.

10 NC O EM-5318 reserved pin, Just NC.

MMCX

connector I MMCX Connect to external active antenna

for receiving GPS signal.

EM-5318

High Performance GPS Module

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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.

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.

Max. Conditions Units

TXD Output Voltage

VTO VCC V

RXD Input Voltage

VRI 3.6 V

High Level Output Current

IOH 2 mA

Low Level Output Current

IOL 2 mA

Receiver Performance

Sensitivity

Chipset Tracking :

Chipset Autonomous acquisition :

-163dBm

-160 dBm

< 35s

Cold Start – Autonomous <15s (with CGEE)

< 35s

Warm Start – Autonomous2

< 15s(with CGEE)

Time-To-First-Fix1

Hot Start – Autonomous3 < 1s

Horizontal Position Accuracy4

Autonomous < 2.5m

Velocity Accuracy5

Speed

Heading

< 0.01 m/s

< 0.01 degrees

Reacquisition

0.1 second, average

NMEA Update Rate

Output data format based on SPI flash memory setting

Maximum Altitude

< 18,000 meter

Maximum Velocity

< 515 meter/ second

EM-5318

High Performance GPS Module

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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 ℃

EM-5318

High Performance GPS Module

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Package Dimensions

Type

10-pin holes

Dimensions

30.0 mm * 30.0 mm * 4.8 mm ±0.2mm

EM-5318

High Performance GPS Module

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Wafer Dimensions(mm)

MMCX connector Dimensions(mm)

EM-5318

High Performance GPS Module

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Reversion history

Reversion Date Name Status / Comments

V1.0 20130605

Mason Initial Version

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