LR9552LP
GPS Module
i
1. INTRODUCTION..................................................................................................................1
1.1. F
H
ARDWARE AND SOFTWARE ........................................................................................... 1
ERFORMANCE .............................................................................................................. 1
P
I
NTERFACE .................................................................................................................... 1
EATURES.......................................................................................................... 1
2. MODULE ARCHITECTURE......................... .....................................................................2
2.1. D
2.2. S
2.3. E
2.4. R
2.5. R
IMENSIONS ....................................................................................................... 3
OFTWARE FEATURES ........................................................................................ 3
NVIRONMENTAL SPECIFICATION ......................................................................... 4
EFERENCE DESIGN............................................................................................ 4
EGULATIONS COMPLIANCE................................................................................. 5
3. PERFORMANCE CHARACTERISTICS...........................................................................7
3.1. P
3.2. D
3.3. A
3.4. T
3.5. S
OSITION AND VELOCITY ACCURACY..................................................................... 7
YNAMIC CONSTRAINS ........................................................................................ 7
CQUISITION TIME
IMING 1PPS OUTPUT......................................................................................... 8
ENSITIVITY........................................................................................................ 8
1
............................................................................................. 7
4. HARDWARE INTERFACE POWER SUPPLY.................................................................9
4.1.
SPECIFICATIONS.................................................................................................. 9
I. Pin Positions ....................................................................................................................9
II. Pin Assignment.................................................................................................................9
5. SOFTWARE INTERFACE.................................................................................................10
6. MECHANICAL DRAWING AND FOOTPRINT............................................................11
6.1. O
UTLINE DRAWING ........................................................................................... 11
7. PACKAGE............................................................................................................................12
7.1. P
ACKAGE SPECIFICATIONS ................................................................................ 12
8. ROHS COMPLIANT INFORMATION............................................................................13
8.1. R
OHS SOLDERING PROFILE ............................................................................... 13
Reflow Profile.........................................................................................................................13
GLOSSARY..................................................................................................................................14
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LR9552LP Manual V02
1. Introduction
The Leadtek GPS 9952LP module (LR9552LP) 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 9552LP is designed to allow quick and easy
integration into GPS-related applications such as:
PDA, Pocket PC, and other computing devices
Car and Marine Navigation
Fleet Management /Asset Tracking
AVL and Location-Based Services
Hand-Held Device for Personal Positioning and Navigation
1.1. Features
Hardware and Software
Based on the high performance features of the SiRFStar III/LP single chip
Compact module size for easy integration: 25x25x8.9 mm (with 4 mm patch antenna)
25x25x6.9 mm (with 2 mm patch antenna) [option]
Fully automatic assemb ly: reflow solder assembly read y
Hardware compatible with SiRF GSW3.2 serial software
Performance
Cold/Warm/Hot Start Time: 1/38/42 sec.
Reacquisition Time: 0.1 second.
RF Metal Shield for best performance in noisy environments.
Interface
RS232 or TTL (option) level serial port for GPS communications interface
Protocol: NMEA-0183/SiRF Binary (default NMEA).
Baud Rate: 4800, 19200, or 57600 baud (default 4800).
© 2006 Leadtek Research Inc. All rights reserved. Page 1/17
Preliminary Confidential - Information is subject to change without prior notice.
LR9552LP Manual V02
2. Module architecture
9552LP ( RS232 ) Block Diagram
25 mm Patch Antenna
16.369MHz
TCXO
bandpass
LNA
filter
SiRF GSC3f / LP
2.85 VD C
regulator
voltage
detector
32.768KHz
Crystal
1.50 VD C
regulator
RS232
Transceiver
NMEA
output
backup battery
5.0VDC p ow er i n
9552 ( TTL ) Block Diagram
25mm Patch Antenna
16.369MHz
TCXO
bandpass
LNA
filter
32.768KHz
Crystal
serial
IO
NMEA
output
Si RF GSC3f
2.85 VDC
regulator
voltage
detector
5.0VDC pow er i n
© 2006 Leadtek Research Inc. All rights reserved. Page 2/17
Preliminary Confidential - Information is subject to change without prior notice.
1.50 VDC
regulator
backup batt ery
LR9552LP Manual V02
2.1. Dimensions
The Physical dimensions of the Leadtek 9552LP 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 9552LP module includes GSW3.2., high sensitivity software solution. For
SiRFStarIII/LP receivers, the default configuration is as follows:
Item Description
Core of firmware SiRF GSW3.2
Baud rate 4800, 9600, 19200, 38400 or 57600 bps (default 4800)
Code type NMEA-0183 ASCII
Datum WGS-84
Protocol message GGA(1sec), GSA(5sec), GSV(5sec), RMC(1sec),VTG(1sec)
Output frequency 1 Hz
© 2006 Leadtek Research Inc. All rights reserved. Page 3/17
Preliminary Confidential - Information is subject to change without prior notice.
LR9552LP Manual V02
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~+85degC, 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 9552LP power on or off as below:
IRLML6402
VCC 5.0 VDC To 9552LP pin7 VCC_5V
ON / OFF C ontrol
© 2006 Leadtek Research Inc. All rights reserved. Page 4/17
Preliminary Confidential - Information is subject to change without prior notice.
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