Leadtek LR9552 User Manual

LR9552 GPS Module

1. INTRODUCTION..................................................................................................................1

1.1. FEATURES.......................................................................................................... 1

HARDWARE AND SOFTWARE ........................................................................................... 1

PERFORMANCE .............................................................................................................. 1

INTERFACE .................................................................................................................... 1

2. MODULE ARCHITECTURE ..............................................................................................2

2.1. DIMENSIONS ....................................................................................................... 3

2.2. SOFTWARE FEATURES ........................................................................................ 3

2.3. ENVIRONMENTAL SPECIFICATION ......................................................................... 4

2.4. REFERENCE DESIGN............................................................................................ 4

2.5. REGULATIONS COMPLIANCE................................................................................. 5

3. PERFORMANCE CHARACTERISTICS...........................................................................7

3.1. POSITION AND VELOCITY ACCURACY..................................................................... 7

3.2. DYNAMIC CONSTRAINS ........................................................................................ 7

3.3. ACQUISITION TIME 1............................................................................................. 7

3.4. TIMING 1PPS OUTPUT......................................................................................... 8

3.5. SENSITIVITY........................................................................................................ 8

4. HARDWARE INTERFACE POWER SUPPLY.................................................................9

4.1. SPECIFICATIONS.................................................................................................. 9

I. Pin Positions ....................................................................................................................9

II. Pin Assignment...............................................................................................................10

5. SOFTWARE INTERFACE.................................................................................................11

6. MECHANICAL DRAWING AND FOOTPRINT............................................................12

6.1. OUTLINE DRAWING ........................................................................................... 12

7. PACKAGE............................................................................................................................13

7.1. PACKAGE SPECIFICATIONS ................................................................................ 13

8. ROHS COMPLIANT INFORMATION............................................................................14

8.1. ROHS SOLDERING PROFILE ............................................................................... 14

Reflow Profile.........................................................................................................................14

GLOSSARY..................................................................................................................................15

LR9552 Manual V04

1. Introduction

The Leadtek GPS 9952 module (LR9552) is a high sensitivity and very compact smart antenna module, with built in GPS receiver circuit. This 20-channel global positioning system (GPS) receiver is designed for a wide range of OEM applications and is based on the fast and deep GPS signal search capabilities of SiRFStarIII™ architecture. Leadtek GPS 9552 is designed to allow quick and easy integration into GPS-related applications such as:

λ PDA, Pocket PC, and other computing devices λ Car and Marine Navigation λ Fleet Management /Asset Tracking λ AVL and Location-Based Services λ Hand-Held Device for Personal Positioning and Navigation

1.1. Features

Hardware and Software

λ Based on the high performance features of the SiRF GSC3f/LP single chip λ Compact module size for easy integration: 25 x 25 x 8.9 mm (with 4 mm patch antenna)

25 x 25 x 6.9 mm (with 2 mm patch antenna) [option]

λ Fully automatic assembly: reflow solder assembly ready λ Hardware compatible with SiRF GSW3.2 serial software

Performance

λ Cold/Warm/Hot Start Time: 42/38/1 sec. λ Reacquisition Time: 0.1 second. λ RF Metal Shield for best performance in noisy environments.

Interface

λ RS232 or TTL (option) level serial port for GPS communications interface λ Protocol: NMEA-0183/SiRF Binary (default NMEA). λ Baud Rate: 4800 ~ 57600 baud (default 4800).

LR9552 Manual V04

2. Module architecture

LR9552

9552LP ( RS232 ) Block Diagram

25mm Patch Antenna

16.369MHz TCXO

bandpass

LNA

filter

SiRF GSC3f / LP

2.85 VDC regulator

voltage

detector

32.768KHz Crystal

1.50 VDC regulator

RS232

Transceiver

NMEA output

backup battery

5.0VDC power in

9552 ( TTL ) Block Diagram

25mm Patch Antenna

16.369MHz TCXO

bandpass

LNA

filter

32.768KHz Crystal

serial IO

NMEA output

SiRF GSC3f

2.85 VDC regulator

voltage

detector

5.0VDC power in

1.50 VDC regulator

backup battery

LR9552 Manual V04

2.1. Dimensions

The Physical dimensions of the Leadtek 9552 GPS Module are as follow:

Items Description

Length 25.0 ± 0.3 mm Width 25.0 ± 0.3 mm

Height

8.90 ± 0.3 mm

6.90 ± 0.3 mm

Weight

13.0g (w/ 4mm patch antenna)

8.0g (w/ 2mm patch antenna)

2.2. Software Features

The Leadtek 9552 module includes GSW3.2., high sensitivity software solution. For SiRFStarIII/LP receivers, the default configuration is as follows:

Item Description

Core of firmware 3.2 SiRF GSW Baud rate 4800, 9600, 19200, 38400 or 57600 bps (default 4800) Code type NMEA-0183 ASCII Datum WGS-84 Protocol message GSA(5sec), GSV(5sec), RMC(1sec),VTG(1sec)GGA(1sec), Output frequency 1 Hz

LR9552 Manual V04

2.3. Environmental Specification

Item Description

Operating temperature rang (note) -30 deg. C to +60 deg. C Storage temperature range -30 deg. C to +65 deg. C Humidity up to 95% non-condensing or a wet bulb temperature of +35 deg. C Altitude 18,000 meters (60,000 feet) max. Velocity 515 meters/second (1000 knots) max. Jerk 20 meters/second3, max.

Acceleration 4g, max.

Note: The module can be operated between -30℃~+85℃, but higher temperature may cause internal Li backup battery deterioration that will influence the performance of GPS hot start.

2.4. Reference design

The user can use a PMOS to control 9552 power on or off as below:

IRLML6402

VCC 5.0 VD C

ON / OFF C ontrol

To 9552LP pin7 VC C_5V

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