LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ 1 Product name Description Version MC-1613 Datasheet of MC-1613 stand-alone GPS module 1.2 Introduction LOCOSYS GPS MC-1613 module features high sensitivity, low power and ultra small form factor. This GPS module is powered by MediaTek, it can provide you with superior sensitivity and performance even in urban canyon and dense foliage environment. This module supports hybrid ephemeris prediction to achieve faster cold start. One is self-generated ephemeris prediction that is no need of both network assistance and host CPU’s intervention. This is valid for up to 3 days and updates automatically from time to time when GPS module is powered on and satellites are available. The other is server-generated ephemeris prediction that gets from an internet server. This is valid for up to 14 days. Both ephemeris predictions are stored in the on-board flash memory and perform a cold start time less than 15 seconds. 2 Features 3 MediaTek high sensitivity solution Support 66-channel GPS Low power consumption Fast TTFF at low signal level Built-in 12 multi-tone active interference canceller Free hybrid ephemeris prediction to achieve faster cold start Built-in data logger Up to 10 Hz update rate Capable of SBAS (WAAS, EGNOS, MSAS, GAGAN) Support SBAS ranging Support Japan QZSS Indoor and outdoor multi-path detection and compensation Small form factor 15.9 x 13.1 x 2.2 mm SMD type with stamp holes; RoHS compliant Application Personal positioning and navigation Automotive navigation Marine navigation Page 1/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ Fig 3-1 System block diagram. GPS active antenna 3.3V TX RX VCC LNA Impedance 50 ohm 2~4.3V Battery keep alive to get hot start and AGPS start LDO output 3.3V 1 2 3 4 5 29 NC 28 NC 27 NC 26 NC 25 NC RFIN GND NC NC V_BCKP 6 GND 7 8 9 10 11 MC-1613 NC NC NC NC VCC GND GND Micro processor 24 23 NC 22 NC 21 NC 20 1PPS 19 NC Fig 3-2 Typical application circuit that uses an active antenna Page 2/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ 3.3V GPS passive antenna Impedance 50 ohm 2~4.3V Battery keep alive to get hot start and AGPS start output 3.3V 36 GND 35 NC 34 NC 33 GND 32 NC 31 RX 30 TX 1 2 3 4 5 29 NC 28 NC 27 NC 26 NC 25 NC RFIN GND NC NC V_BCKP 6 GND 7 8 9 10 11 NC NC NC NC VCC MC-1613 GND VCC GND Micro processor 24 23 NC 22 NC 21 NC 20 1PPS 19 NC 18 NC 17 NC 16 NC 15 GND 14 NC 13 /RESET 12 NC LDO TX RX Fig 3-3 Typical application circuit that uses a passive antenna. Page 3/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ 4 GPS receiver and antenna 4.1 GPS receiver Chip MediaTek MT3339 Frequency L1 1575.42MHz, C/A code Channels Support 66 channels (22 Tracking, 66 Acquisition) Update rate 1Hz default, up to 10Hz Sensitivity Acquisition Time Tracking up to -165dBm (with external LNA) Cold start up to -148dBm (with external LNA) Hot start (Open Sky) < 1s (typical) Hot start (Indoor) < 30s 32s (typical) without AGPS Cold Start (Open Sky) < 15s (typical) with AGPS (hybrid ephemeris prediction) Position Accuracy Autonomous 3m (2D RMS). SBAS 2.5m (depends on accuracy of correction data). Max. Altitude < 50,000 m Max. Velocity < 515 m/s Protocol Support NMEA 0183 ver 3.01 9600 bps(1), 8 data bits, no parity, 1 stop bits (default) 1Hz: GGA, GLL, GSA, GSV, RMC, VTG Note 1: Both baud rate and output message rate are configurable to be factory default. 5 Software interface 5.1 NMEA output message Table 5.1-1 NMEA output message NMEA record Description GGA Global positioning system fixed data GLL Geographic position - latitude/longitude GSA GNSS DOP and active satellites GSV GNSS satellites in view RMC Recommended minimum specific GNSS data VTG Course over ground and ground speed GGA--- Global Positioning System Fixed Data Table 5.1-2 contains the values for the following example: $GPGGA,053740.000,2503.6319,N,12136.0099,E,1,08,1.1,63.8,M,15.2,M,,0000*64 Table5.1- 2 GGA Data Format Name Example Message ID $GPGGA Units Description GGA protocol header Page 4/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ UTC Time 053740.000 hhmmss.sss Latitude 2503.6319 ddmm.mmmm N/S indicator N N=north or S=south Longitude 12136.0099 dddmm.mmmm E/W Indicator E E=east or W=west Position Fix Indicator 1 See Table 5.1-3 Satellites Used 08 Range 0 to 12 HDOP 1.1 Horizontal Dilution of Precision MSL Altitude 63.8 mters Units M mters Geoid Separation 15.2 mters Units M mters Age of Diff. Corr. second Diff. Ref. Station ID 0000 Checksum *64 <CR> <LF> Null fields when DGPS is not used End of message termination Table 5.1-3 Position Fix Indicators Value Description 0 Fix not available or invalid 1 GPS SPS Mode, fix valid 2 Differential GPS, SPS Mode, fix valid 3-5 Not supported 6 Dead Reckoning Mode, fix valid GLL--- Geographic Position – Latitude/Longitude Table 5.1-4 contains the values for the following example: $GPGLL,2503.6319,N,12136.0099,E,053740.000,A,A*52 Table 5.1-4 GLL Data Format Name Example Units Description Message ID $GPGLL GLL protocol header Latitude 2503.6319 ddmm.mmmm N/S indicator N N=north or S=south Longitude 12136.0099 dddmm.mmmm E/W indicator E E=east or W=west UTC Time 053740.000 hhmmss.sss Status A A=data valid or V=data not valid Page 5/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ Mode A Checksum *52 A=autonomous, D=DGPS, E=DR, N=Data not valid, R=Coarse Position(1), S=Simulator <CR> <LF> End of message termination GSA---GNSS DOP and Active Satellites Table 5.1-5 contains the values for the following example: $GPGSA,A,3,24,07,17,11,28,08,20,04,,,,,2.0,1.1,1.7*35 Table 5.1-5 GSA Data Format Name Example Units Description Message ID $GPGSA GSA protocol header Mode 1 A See Table 5.1-6 Mode 2 3 See Table 5.1-7 ID of satellite used 24 Sv on Channel 1 ID of satellite used 07 Sv on Channel 2 …. …. ID of satellite used Sv on Channel 12 PDOP 2.0 Position Dilution of Precision HDOP 1.1 Horizontal Dilution of Precision VDOP 1.7 Vertical Dilution of Precision Checksum *35 <CR> <LF> End of message termination Table 5.1-6 Mode 1 Value Description M Manual- forced to operate in 2D or 3D mode A Automatic-allowed to automatically switch 2D/3D Table 5.1-7 Mode 2 Value Description 1 Fix not available 2 2D 3 3D GSV---GNSS Satellites in View Table 5.1-8 contains the values for the following example: $GPGSV,3,1,12,28,81,285,42,24,67,302,46,31,54,354,,20,51,077,46*73 $GPGSV,3,2,12,17,41,328,45,07,32,315,45,04,31,250,40,11,25,046,41*75 $GPGSV,3,3,12,08,22,214,38,27,08,190,16,19,05,092,33,23,04,127,*7B Page 6/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ Table 5.1-8 GSV Data Format Name Example Message ID $GPGSV Units GSV protocol header Total number of messages1 3 Message number 1 Description Range 1 to 3 1 Range 1 to 3 Satellites in view 12 Satellite ID 28 Elevation 81 degrees Channel 1 (Range 00 to 90) Azimuth 285 degrees Channel 1 (Range 000 to 359) SNR (C/No) 42 dB-Hz Channel 1 (Range 00 to 99, null when not tracking) Satellite ID 20 Elevation 51 degrees Channel 4 (Range 00 to 90) Azimuth 077 degrees Channel 4 (Range 000 to 359) SNR (C/No) 46 dB-Hz Channel 4 (Range 00 to 99, null when not tracking) Checksum *73 Channel 1 (Range 01 to 196) Channel 4 (Range 01 to 196) <CR> <LF> End of message termination 1. Depending on the number of satellites tracked multiple messages of GSV data may be required. RMC---Recommended Minimum Specific GNSS Data Table 5.1-9 contains the values for the following example: $GPRMC,053740.000,A,2503.6319,N,12136.0099,E,2.69,79.65,100106,,,A*53 Table 5.1-9 RMC Data Format Name Example Message ID $GPRMC RMC protocol header UTC Time 053740.000 hhmmss.sss Status A A=data valid or V=data not valid Latitude 2503.6319 ddmm.mmmm N/S Indicator N N=north or S=south Longitude 12136.0099 dddmm.mmmm E/W Indicator E E=east or W=west Speed over ground 2.69 knots Course over ground 79.65 degrees Date 100106 Description True ddmmyy degrees Magnetic variation Variation sense Mode Units E=east or W=west (Not shown) A A=autonomous, D=DGPS, E=DR, N=Data not valid, R=Coarse Position, S=Simulator Page 7/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ Checksum *53 <CR> <LF> End of message termination VTG---Course Over Ground and Ground Speed Table 5.1-10 contains the values for the following example: $GPVTG,79.65,T,,M,2.69,N,5.0,K,A*38 Table 5.1-10 VTG Data Format Name Example Message ID $GPVTG Course over ground 79.65 Reference T Units VTG protocol header degrees Reference M Speed over ground 2.69 Units N Speed over ground 5.0 Units K Mode A Checksum *38 Measured heading True degrees Course over ground Description Measured heading Magnetic knots Measured speed Knots km/hr Measured speed Kilometer per hour A=autonomous, D=DGPS, E=DR, N=Data not valid, R=Coarse Position(1), S=Simulator <CR> <LF> End of message termination 5.2 Proprietary NMEA input/output message Please refer to MTK proprietary message. 5.3 Examples to configure the power mode of GPS module The GPS module supports different power modes that user can configure by issuing software commands. 5.3.1 Standby mode User can issue software command to make GPS module go into standby mode that consumes less than 200uA current. GPS module will be awaked when receiving any byte. The following flow chart is an example to make GPS module go into standby mode and then wake up. Page 8/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ Start GPS module is powered on and in normal operation mode Change GPS to standby mode Wake up GPS module unsigned char StandbyMode[] = {"$PMTK161,0*28\x0D\x0A"}; Yes Issue any byte to wake up GPS module No GPS module will return {"$PMTK010,002*2D\x0D\x0A"} and start normal operation. End 5.3.2 Periodic mode When GPS module is commanded to periodic mode, it will be in operation and standby periodically. Its status of power consumption is as below chart. The following flow chart is an example to make GPS module go into periodic mode Page 9/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ and then back to normal operation mode. Start GPS module is powered on Change GPS to periodic mode with 3000ms on and 12000ms standby if position fix is available, otherwise (18000, 72000) ms will be applied. unsigned char PeriodicMode[] = {"$PMTK225,2,3000,12000,18000,72000*15\x0D\x0A"}; Note: minimum on time is 2000ms. maximum standby time is 518400000ms (6 days) GPS module will return message "$PMTK001,225,3*35\x0D\x0A" if command is accepted. Set GPS to normal operation mode? Yes GPS is in standby now Yes Issue any byte to GPS and wait it awake No No Issue command of normal operation mode unsigned char NormalMode[] = {"$PMTK225,0*2B\x0D\x0A"}; GPS module will return message "$PMTK001,225,3*35\x0D\x0A" if command is accepted. End GPS is in periodic mode End GPS is in normal mode 5.3.3 AlwaysLocateTM mode AlwaysLocateTM is an intelligent controller of periodic mode. Depending on the environment and motion conditions, GPS module can adaptively adjust working/standby time to achieve balance of positioning accuracy and power consumption. In this mode, the host CPU does not need to control GPS module until the host CPU needs the GPS position data. The following flow chart is an example to make GPS module go into AlwaysLocateTm mode and then back to normal operation mode. Page 10/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ Note: AlwaysLocateTM is a trade mark of MTK. Start GPS module is powered on Change GPS to AlwaysLocate mode unsigned char AlwaysLocateMode[] = {"$PMTK225,8*23\x0D\x0A"}; Yes GPS module will return message "$PMTK001,225,3*35\x0D\x0A" if command is accepted. Request a GPS position data No Yes Issue any byte to get GPS position data No Set GPS to normal operation mode? Change GPS back to AlwaysLocate mode Yes Issue any byte to GPS and wait it awake No Set GPS to normal operation mode unsigned char NormalMode[] = {"$PMTK225,0*2B\x0D\x0A"}; End GPS is in normal mode 5.4 Data logger The GPS module has internal flash memory for logging GPS data. The configurations Page 11/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ include time interval, distance, speed, logging mode, and … etc. For more information, please contact us. 6 Pin assignment and descriptions Table 6-1 Pin descriptions Pin # Name Type Description 1 RFIN I GPS RF signal input 2 GND P Ground 3 NC Not connected 4 NC Not connected 5 V_BCKP P 6 GND P 7 NC Not connected 8 NC Not connected 9 NC Not connected 10 NC Not connected 11 VCC P Backup battery supply voltage This pin must be powered to enable the module. Note 1 2 Ground DC supply voltage Page 12/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ 12 NC Not connected 13 /RESET Reset input, active low. GPS module has internal power-on reset circuit, user can leave this pin floating. 14 NC 15 GND 16 NC Not connected 17 NC Not connected 18 NC Not connected 19 NC Not connected 20 1PPS 21 NC Not connected 22 NC Not connected 23 NC Not connected 24 GND 25 NC Not connected 26 NC Not connected 27 NC Not connected 28 NC Not connected 29 NC Not connected 30 TX O Serial output (Default NMEA) 31 RX I Serial input (Default NMEA) 32 NC 33 GND 34 NC Not connected 35 NC Not connected 36 GND I Not connected P O P Ground Pulse per second (default 100ms pulse/sec) Ground Not connected P P Ground Ground <Note> 1. RFIN does not have short circuit protection. 2. In order to get AGPS (Long Term Orbit) advantage, this pin must be always powered during the period of effective AGPS. Page 13/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ 7 DC & Temperature characteristics 7.1 Absolute maximum ratings Parameter Symbol Ratings Units VCC 4.3 V Input Backup Battery Voltage V_BCKP 4.3 Operating Temperature Range Topr -40 ~ 85 V ℃ Storage Temperature Range Tstg -40 ~ 85 ℃ Input Voltage 7.2 DC Electrical characteristics Parameter Input Voltage Input Backup Battery Voltage Symbol Conditions Min. Typ. Max. Units VCC 3.0 3.3 4.3 V V_BCKP 2.0 4.3 V 87(1) VCC = 3.3V, w/o active antenna, Peak Acquisition Tracking Standby 26 18(2) 170 mA mA mA uA VCC = 0V 6 uA Supply Current Iss Backup Battery Current Ibat High Level Input Voltage VI H 2.0 3.6 V Low Level Input Voltage VI L -0.3 0.8 V High Level Input Current IIH no pull-up or down -1 1 uA Low Level Input Current IIL no pull-up or down -1 1 uA High Level Output Voltage VOH Low Level Output Voltage VOL High Level Output Current IOH 2 mA Low Level Output Current IOL 2 mA 2.4 V 0.4 V Note 1. This happens when downloading AGPS data to MC-1613. Note 2. Measured when position fix (1Hz) is available, input voltage is 3.3V and the function of self-generated ephemeris prediction is inactive. 7.3 Temperature characteristics Parameter Symbol Min. Typ. Max. Operating Temperature Topr -40 - 85 Units ℃ Storage Temperature Tstg -40 25 85 ℃ Page 14/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ 8 Mechanical specification 8.1 Outline dimensions 8.2 Recommended land pattern dimensions Page 15/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ 9 Reel packing information Page 16/17 © 2010 LOCOSYS Technology Inc. LOCOSYS Technology Inc. 20F.-13, No.79, Sec. 1, Xintai 5th Rd., Xizhi City, Taipei County 221, Taiwan ℡ 886-2-8698-3698 886-2-8698-3699 www.locosystech.com/ Document change list Revision 1.0 First release on Dec. 24, 2010. Revision 1.0 to Revision 1.1 (April 11, 2011) Upgraded GPS firmware to version AXN1.5. Changed cold start time from 35s to 33s on page 3 Changed full cold start time from 38s to 34s on page 3 Revised RFIN (pin11) to RFIN (pin1) on page 3. Changed default 1PPS as 100ms pulse/sec on page 10 Revision 1.1 to Revision 1.2 (November 21, 2011) Changed GPS chip from MT3329 to MT3339 on page 4. The units with a capital T after the date code on the metal shield have been changed to new chip. Added the description of hybrid ephemeris prediction in section 1. Added several new features in section 2. Changed Fig 3-1 and Fig 3-2 Added Fig 3-3 Changed hot start time from < 2s to < 1s on page 5. Changed cold start time from 33s to 32s on page 5. Changed Max. Altitude from 18,000m to 50,000m on page 5. Removed the section 4.2 Changed the range of satellite ID in GSV message from 32 to 196 on page 7. Added “N = data not valid, R=Coarse Position, S=Simulator” in GLL, RMC and VTG message. Added section 5.3 and 5.4 Changed the maximum input voltage of VCC from 3.6V to 4.3V in the section 7.2. Changed the peak supply current from 160mA to 87mA in the section 7.2. Changed the acquisition current from 35mA to 26mA in the section 7.2. Changed the tracking current from 33mA to 18mA in the section 7.2. Added standby current, 170uA in the section 7.2. Changed the minimum operation temperature from -30℃ to -40℃ in the section 7.3 Page 17/17 © 2010 LOCOSYS Technology Inc.