Holux CR-105 SPECIFICATION V1.2 User manual


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: [phone] FAX: [phone]
Website: www.holux.com
Version : 1.2
All Right Reserved
CR‐105
SPECIFICATION
GPS RECEIVER MODULE

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
2
Version change history
Version Date Revised Reason
0.1 2007/4/19 Draft release
0.2 2007/05/31 Add product photo
1.0 2007/06/27 Official release
1.1 2007/09/04 Modify section 3. ME drawing
1.2 2007/11/05 Add T0D in section 2.4 and 3.

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
3
Outline
1. Introduction..........................................................................................................4
1.1 General introductions..............................................................................4
1.2 Key Features.............................................................................................4
1.3 Applications..............................................................................................4
2Technical Description ..........................................................................................5
2.1 Block Diagram..........................................................................................5
2.2 Pin Definition............................................................................................5
2.3 Specification..............................................................................................6
2.4 Configuration Information ......................................................................7
3. Mechanical Dimension.............................................................................................8
3.1 Mechanical Dimension.............................................................................8
3.2 Product photo.........................................................................................13
4User Interface.....................................................................................................15
4.1 Protocol....................................................................................................15
4.2 NMEA Protocol.......................................................................................15
4.3 MTK NMEA Packet Format..................................................................16
5. Customer design recommendation.......................................................................17
5.1 Recommend Layout Pattern.................................................................17
5.1.1 FFC Connector Layout..................................................................17
5.1.2 FFC connector cable......................................................................17
5.2 Recommend H/W specification.............................................................17
5.2.1 Antenna.........................................................................................17
5.2.2 Recommend circuit......................................................................18

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
4
1. Introduction
1.1 General introductions
CR-105 is an ultra miniature 18 * 25.15 * 7.9 mm GPS receiver module integrated
with patch built in 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 CR-105 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: 18 * 25.15 * 7.9 mm(with 15*15*4 patch)
‧ RoHS/WEEE compliant
‧ High sensitivity -159dBm
‧ Searching up to 32 Channel of satellites
‧ Fast Position Fix
‧ Low power consumption
‧ EE Design benefit for customer
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

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
5
2Technical Description
2.1 Block Diagram
GND
VDD
6
Serial data input
Power in
5
MT3318
4
External interrupt
PATCH ANT
Standby mode setting
Reset
RF
SWITCH
VBAT in
HRST
MMCX
Serial data output
FPC CONNECTOR
LNA
V28D
RX0
V28A
TX0
3
Dual LDO
Regalutors
STANDBY
1
1.2V
Regalutors
IN1
SAW
External Ant.
2
8
VBAT
7
2.2 Pin Definition
Pin Pin Name Type Function description
1 GND I GND
2 HRST I System reset, Active low
3 RXD0 I Serial Data input UART0
4 TXD0 O Serial Data Output UART0
5 STANDBY I Standby Mode Hi: Standby mode, Low: Normal mode(Reserve for
future)
6 INT1 I/O GPIO/External interrupt(Reserve for future)
7 VBAT I 3 ~ 5 V supply input
8 VDD I 3 ~ 5 V supply input
I: Input O: Output I/O: Input or Output, Open if not used

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
6
2.3 Specification
General
GPS technology MTK GPS chipset
Frequency L1,1575.42MHz
C/A Code 1.023MHZ chip rate
Channels 32 channels all in view searching
Sensitivity Better than -159dBm
ReceiverAccuracy
Position Without aid:3.0 M 2D-RMS
DGPS(WAAS, EGNOS, MSAS, RTCM):2.5m
Velocity Without aid:0.1M/sec
Time 0.1μs. Sync GPS time
Datum
Datum WGS84(Default) total 219 datums
Time to First Fix (Follow MTK chip specification)
Hot start 1 sec average
Warm start 33 sec average
Cold start 36 sec average
Reacquisition ＜1sec
Protocol
GPS Output Data
NMEA0183(v3.1)- GGA,GLL,GSA,GSV,RMC,VTG
Support Baud rate 4800/9600/…./115200 bps (default 4800),
Data bit:8,Stop bit:1, No parity
Update Rata 1Hz(default)
Protocol Support NMEA-0183
1PPS Enable(1Hz pulse 10% duty cycle)
Limitations
Acceleration Limit ＜4G
Altitude Limit ＜18000 meters
Velocity Limit ＜515 M/sec
Jerk Limit 20 M/sec3
Power
Operation Current Acquisition:65 [email protected]
Operation Current Tracking:＜[email protected]
DC Input Range VCC 3.0~5.0V

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
7
VBAT 3.0~5.0V
Temperature
Operating -40℃to 85℃
Storage -40℃to 85℃
Humidity ≦95% , non condensing
Physical
Dimension 18 * 25.15 * 7.9 mm(include GND PLANE)
Weight 5g
Antenna
Impedance 50Ω
Protection Build-in short circuit and Over current protection
Output Voltage 2.8VDC
Patch dimension
4 types : 15*15*4 mm, 15*15*2 mm, 12*12*4 mm,
18*18*4 mm
Connector
FFC Type 8Pin
MMCX Active Antenna connector (option)
2.4 Configuration Information
CR-105 provide 5 configurations because of the different angle of MMCX
connector and different RF interface output voltage.
Model No. Patch size MMCX(90∘) connector
CR-105-T0A 15*15*4 mm No
CR-105-T0B 15*15*2 mm No
CR-105-T0C 12*12*4 mm No
CR-105-T0D 18*18*4 mm No
CR-105-TEA 15*15*4 mm Yes

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
8
3. Mechanical Dimension
3.1 Mechanical Dimension
Type : T0A(Patch 15*15*4mm)

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
9
Type : T0B (Patch 15*15*2mm)

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
10
Type : T0C (Patch 12*12*4mm)

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
11
Type : T0D (Patch 18*18*4mm)

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
12
Type : TEA (Patch 15*15*4mm + 90∘MMCX connector)

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
13
3.2 Product photo
The photo is for reference, the real content will depend on the real configuration.
Top side (without MMCX connector) :
Top side (with MMCX connector) :

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
14
Bottom side (without MMCX connector)

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
15
4User Interface
CR-105 provides 2-wire digital UART port for communication of GPS position data
using NMEA protocol or MTK extension protocol. UART port is capable of 4800 to
115200 baud rate.
4.1 Protocol
CR-105 is default to support standard NMEA-0183 protocol. In addition, a series of
MTK extensions (PMTK messages) have been developed that can be used to provide
extended capabilities common to many applications.
4.2 NMEA Protocol
CR-105 is capable of supporting following NMEA formats:
NMEA RECORD Description
GGA GPS fix data
GLL Geographic
GSA GNSS DOP and active satellite
GSV GNSS Satellites in view
RMC Recommended minimum specific GNSS data
VTG Course Over Ground and Ground Speed
ZDA Time&Data

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
16
4.3 MTK NMEA Packet Format
Preamble TalkerID PktType Data field * CHK1 CHK2 CR LF
Maximum packet length is restricted to 255 bytes
Field Length Type D
Preamble 1 byte Character “$”
TalkerID 4 byte Character string “PMTK”
PktType 3 byte Character string
“000”to “999”, an identifier used
to tell the decoder how to decode
the packet
Data Field Variable
“, ”must be inserted ahead each
data filed to help the decoder
process the Data Field
* 1 byte Character
The star symbol is used to mark
the end of Data Field
CHK1
CHK2 2 byte Character string checksum of the data between Preamble “, ”and “*”
CR, LF 2 byte Binary data used to identify the end of a
packet

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
17
5. Customer design recommendation
5.1 Recommend Layout Pattern
5.1.1 FFC Connector Layout
5.1.2FFC connector cable
Pitch 0.5mm 8pin Flat Flexible cable
※ Reference connector cable: ENTERY INDUSTRIAL CO.,LTD
※ Product No:A08020C3344NB
5.2 Recommend H/W specification
．Active antenna connector: MMCX connector
．Interface connector: FFC connector
．GND PLANE depends on different Antenna patch size, HOLUX can provide the
customization design.
5.2.1 Antenna
．Use active antenna that work with 2.8V power supply
．Receiving frequency 1.57542GHz±1.032MHz
．Polarization RHCP (right hand circular polarized)
．Output impedance=50Ω
．Noise figure ≦2.0dB
．15dB≦LNA Gain≦20dB

CR-105
GPS Module series THE PRO NAME IN GPS
HOLUX Technology, Inc.
1F, No.30, R&D Road, Hsinchu 300, Taiwan (Hsinchu Science Industrial Park)
TEL: [phone] FAX:[phone] E-mail:[e-mail] http:www.holux.com.tw
18
5.2.2 Recommend circuit
HRST
C1
10p
VDD
STANDBY
VDD
VDD
C2
2.2uF
R1
10K
R2
10K
C4
2.2uF
INT1
VBAT
C3
10p
HRST
GND
RXD0
STANDBY
RXD0
TXD0
CR-105
VBAT
TXD0
Note1: VDD (pin8) could connect to3~5Vdc power supply
Note2: VBAT (pin7) could connect to3~5Vdc power supply
Note3: HRST (pin2) active LOW
Note4: STANDBY (pin5) active HIGH, enter standby mode