
GPS Engine Board
M-89
SPECIFICATION
1F, No. 30, R&D Rd. II, HsinChu City 300, Science-based Industrial Park, Taiwan
(300) 新竹市科學園區 研發二路30號1 樓
TEL: 03-6687000 FAX: 03-6687111
Website: www.holux.com
All Right Reserved

M-89
GPS Module series THE PRO NAME IN GPS
Version Change History
Version Date Revised Reason
0.1 2007/04/18 Draft release
1.0 2007/05/22 Official release
1.1 2007/06/27 Modify 6.2 reference design
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886 -3-6687000 FAX:886-3-6687111 E-mail:info@holux.com.tw http:www.holux.com.tw

M-89
GPS Module series THE PRO NAME IN GPS
Outline
1. Introduction........................................................................................................4
1.1 General introductions ..............................................................................4
1.2 Key Features.............................................................................................4
1.3 Applications ..............................................................................................4
2 Technical Description......................................................................................5
2.1 Block Diagram..........................................................................................5
2.2 Pin Definition............................................................................................5
2.3 Specification...............................................................................................7
3. Mechanical Dimension........................................................................................9
3.1 Mechanical Dimension.............................................................................9
4. Package................................................................................................................10
4.1 Packing.....................................................................................................10
4.2 Reference Product photo........................................................................11
5. User Interface..................................................................................................12
5.1 Protocol.........................................................................................................12
5.2 NMEA Protocol......................................................................................12
5.3 MTK NMEA Packet Format..................................................................13
6. Reference design...........................................................................................14
6.1 Reference circuit......................................................................................14
6.2 Reference PCB pattern...........................................................................15
6.3 Recommendation reflow profile ............................................................16
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886 -3-6687000 FAX:886-3-6687111 E-mail:info@holux.com.tw http:www.holux.com.tw

M-89
GPS Module series THE PRO NAME IN GPS
1. Introduction
1.1 General introductions
M-89 is an ultra miniature 25.4 * 25.4 * 3 mm GPS engine board designed by low
power consumption MTK GPS solution. It provides superior sensitivity up to
-159dBm and fast Time-To-First-Fix in navigation application. The stable
performance of M-89 is your best choice to be embedded in your portable device
design, like PDA、PND、mobile phone、Digital Camera for GPS service.
1.2 Key Features
• small form factor: 25.4 * 25.4 * 3 mm
• RoHS/WEEE compliant
• High sensitivity -159dBm
• Searching up to 32 Channel of satellites
• Fast Position Fix
• Low power consumption
• RTCM -in ready.
• Built-in WAAS/EGNOS/MSAS Demodulator.
• Support NMEA0183 V 3.01 data protocol .
• Real time navigation for location based services.
• For Car Navigation, Marine Navigation, Fleet Management, AVL and
Location-Based Services, Auto Pilot, Personal Navigation or touring
devices, Tracking devices/systems and Mapping devices application
1.3 Applications
• Automotive and Marine Navigation
• Automotive Navigator Tracking
• Emergency Locator
• Geographic Surveying
• Personal Positioning
• Sporting and Recreation
• Embedded applications:
• Smart phone, UMPC, PND, MP4
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886 -3-6687000 FAX:886-3-6687111 E-mail:info@holux.com.tw http:www.holux.com.tw

M-89
GPS Module series THE PRO NAME IN GPS
2 Technical Description
2.1 Block Diagram
2.2 Pin Definition
Pin Pin Name Type
1
VCC_IN I 3.3 ~ 5 V supply input
Function description
2
3
4
5
6
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: 886 -3-6687000 FAX:886-3-6687111 E-mail:info@holux.com.tw http:www.holux.com.tw
GND G Ground
NC I NC
RXDA I Serial Data input A
TXDA O Serial Data Output A
TXDB O Serial Data Output B