LR9552
GPS Module
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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
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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).
© 2006 Leadtek Research Inc. All rights reserved. Page 1/18
Preliminary Confidential - Information is subject to change without prior notice.
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
© 2006 Leadtek Research Inc. All rights reserved. Page 2/18
Preliminary Confidential - Information is subject to change without prior notice.
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
© 2006 Leadtek Research Inc. All rights reserved. Page 3/18
Preliminary Confidential - Information is subject to change without prior notice.
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
© 2006 Leadtek Research Inc. All rights reserved. Page 4/18
Preliminary Confidential - Information is subject to change without prior notice.