RGPSM202 Semtech, RGPSM202 Datasheet
RGPSM202
Specifications of RGPSM202
Related parts for RGPSM202
RGPSM202 Summary of contents
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... Easily integrated into existing systems • On-board RAM for GPS navigation data, on-board Flash memory back-up • PPS output • Bidirectional NMEA interface • Real Time Clock with separate back-up power supply REFERENCE RGPSM202 – 16M Flash version 1 RGPSM202 SlimGPS™ Receiver www.semtech.com ...
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... FIRSTGPS ARCHITECTURE HIGHLIGHTS................................................................................................................3 1.1 Industry Leading GPS Performance......................................................................................................................3 1.2 Low Power .............................................................................................................................................................3 1.3 RGPSM202 SlimGPS Receiver Highlights............................................................................................................3 2 FUNCTIONAL BLOCK DIAGRAM ................................................................................................................................3 3 PIN DESCRIPTION.......................................................................................................................................................4 4 TECHNICAL CHARACTERISTICS...............................................................................................................................4 4.1 Specifications.........................................................................................................................................................4 4.2 Physical Characteristics.........................................................................................................................................5 4.3 Mechanical Interface..............................................................................................................................................5 4.4 Production Issues ..................................................................................................................................................6 4.4.1 Proposed Customer Solder Profile.................................................................................................................6 5 INTERFACE DEFINITION, PRINCIPLES OF OPERATION ...
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... Low-power – RF section and GPS engine turned OFF, MCU clock turned ON o Power down - RF section, GPS engine, and MCU clock turned OFF, main power supply OFF, RTC o running on the back-up supply 1.3 RGPSM202 SLIMGPS RECEIVER HIGHLIGHTS - Embedded AT91 MCU, ARM7TDMI-based - Small form factor - Low cost Ready-to-plug solution, fully autonomous PVT solution ...
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... Searching/Position fix indicator / Board Test Mode Sel Almanac complete & valid / Board Test Mode Sel Board Test Mode Table 1 – Pin description Min. 1/minute 12 seconds (50%) 32 seconds (50%) 120 seconds (50%) 4 RGPSM202 SlimGPS™ Receiver Typ. Max. L1, C/A code 32/8 1/second 1/second 1 second -173 dBW ...
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... Input voltage – data interface Output voltage, VCC = 3V 4.2 PHYSICAL CHARACTERISTICS The dimensions of the RGPSM202 are (approx. 1.49” x 1.04” x 0.12”) drop-in module. Weight is < 6 grams. This device has an operating temperature range between -40 and +85°C 4.3 MECHANICAL INTERFACE Surface mount, compatible with an SMD assembly line ...
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... PRODUCTION ISSUES The RGPSM202 module PCB is 1mm thick FR4 board. Its pin out uses castellation joints. It contains BGA components, has a shield around the edge designed for a secondary re-flowed in customers manufacturing process. 4.4.1 Proposed Customer Solder Profile The customer solder profile choice is dictated by the solder profile used in the assembly process of the RGPSM202 module. In the Customer Solder Profile recommended to use a solder content of 63% Tin and 37% lead, with a peak temperature of 200° ...
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... BTM – Board Test Mode selection TDI, TDO, TMS, TCK – JTAG test interface © Semtech 2005 1 second ~ 83 ms. Figure 3 – PPS timing diagram (Delay > 100 ms <1.5 sec.) Beginning of the ‘Delete Initial Position’ task Figure 4 – DELPOSN timing diagram 7 RGPSM202 SlimGPS™ Receiver www.semtech.com ...
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... Operating the GPS receiver in a basic “stand-alone” configuration The simplest and easiest way to operate the RGPSM202 is the stand-alone configuration described below. In this case, the GPS receiver is simply controlled by its main power supply. It only sends NMEA strings through its TXDA line. The ...
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... Operating the GPS receiver in a basic “serial, bidirectional” configuration This is a slightly more elaborate way to operate the RGPSM202. Compared to Paragraph 5.2.1, the module can receive command/data ASCII character strings from its RXDA serial line. In this case the RXDA line should be connected to a host, microcontroller, or any other device that can send NMEA strings through a UART ...
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... NMEA STANDARD MESSAGE SET SPECIFICATION The RGPSM202 supports NMEA-0183 v3.0 output messages listed below. Brief descriptions of these messages are provided below. 5.3.1 NMEA Standard Sentences Semtech receivers use the standard output messages listed in Table 6: NMEA GGA GLL GSA GSV RMC ...
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... SV on Channel N 1.8 Position Dilution of Precision 1.0 Horizontal Dilution of Precision 1.5 Vertical Dilution of Precision *33 End of message termination Table 10. GSA Data Format Description Manual – forced to operate mode Automatic – allowed to automatically switch 2D/3D Table 11. Mode 1 11 RGPSM202 SlimGPS™ Receiver www.semtech.com ...
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... Range 0 to 99, null when not tracking … 27 Channel 4 (Range 1 to 32) 27 degrees Channel 4 (Maximum 90) 138 degrees Channel 4 (True, Range 0 to 359) 42 dBHz Range 0 to 99, null when not tracking *71 End of message termination Table 13. GGA Data Format 12 RGPSM202 SlimGPS™ Receiver www.semtech.com ...
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... True 139.6 degrees Measured heading M Magnetic 0.13 knots Measured horizontal speed N Knots 0.2 km/hr Measured horizontal speed K Kilometer per hour autonomous differential estimated manual input, S=simulator mode not valid *6E End of message termination Table 15. VTG Data Format 13 RGPSM202 SlimGPS™ Receiver 1 www.semtech.com ...
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... End of message termination Table 16 ZDA Data Format Example Units Description $GPGPQ GPQ protocol header RMC Identifier of the requested NMEA sentence: GGA, GLL, GSA, GSV, RMC, VTG, or ZDA End of message termination Table 17 GPQ Data format 14 RGPSM202 SlimGPS™ Receiver www.semtech.com ...
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... This sentence can be automatically output at a given rate by setting Bit #9 of the NMEA sentence mask (see NM- Sentence Mask and Automatic Output Rate section below). This is a query-only sentence. $PXEMaTF,a,a,xxxxxx,xx,x,llll.lllll,a,yyyyy.yyyyy,a,xxxxx*hh © Semtech 2005 where ccccccc is a diagnostic string characters 15 RGPSM202 SlimGPS™ Receiver www.semtech.com ...
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... Automatic output sentence rate (00 to 99) End of message termination Table 19 NM Data Format Sentence Bit# Field value GLL 1 GGA 0 GLL 1 VTG 2 GSV 3 GSA 4 ZDA 5 RMC (set) 16 RGPSM202 SlimGPS™ Receiver 0002 0001 0002 0004 0008 0010 0020 0100 0200 www.semtech.com ...
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... C = cold software reset W = warm software reset H = hot software reset S = start the FirstGPS library X = shut down the FirstGPS library B = save GPS data into the BBFLASH (ignored if there is no position fix) End of message termination Table 23 RT Data Format 17 RGPSM202 SlimGPS™ Receiver www.semtech.com ...
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... End of message termination Table 25 GS Data Format Semi-Major Axis 6377563.396 6378160 6377397.155 6377483.865 6378206.4 6378249.145 18 RGPSM202 SlimGPS™ Receiver Flattening 299.3249646 298.25 299.1528128 299.1528128 294.9786982 293.465 www.semtech.com ...
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... Table 26 Ellipsoid models (set) Example Units Description $PXEMaLP Proprietary LP protocol header, a-mode (S = set response) End of message termination Table 27 LP Data format (response to the channel status query) 19 RGPSM202 SlimGPS™ Receiver 300.8017 300.8017 300.8017 300.8017 300.8017 298.257222101 298.3 297 298.247 297 298.3 299 ...
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... Beyond this, the specified performance will degrade. Initial position errors greater than 3,000 km will result in a constellation which is almost out of view. So, the recommendation is to set the initial position only if its accuracy is better than 1,200 km. © Semtech 2005 SlimGPS™ Receiver 20 RGPSM202 www.semtech.com ...
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... The command is: $PXEMSTR,SSDI*74 Important Note: after the PXEMSTR,SSDI command is sent, the receiver should make a position fix before it saves GPS data in its back-up Flash memory. © Semtech 2005 SlimGPS™ Receiver 21 RGPSM202 www.semtech.com ...
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... Hot Start, that is the start-up sequence of the receiver when the ephemeris, the last position, the time and the almanac information are available. In the RGPSM202, the GPS data structure, including almanac, ephemeris and last position fix, is copied into a specific sector of the on-board Flash memory, that’s the back-up Flash sector, or BBFlash. The data are stored the first time the almanac is complete and up-to-date, then every M minutes, where M is defined in Default Parameters Table *, parameter #37 ...
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... Integer 1 Character N Integer 5 Real 7.9e-6 Real 0.087 Real 1.3 Real 16 Real 8 Integer 20 Real 0 Real 0 Real 0 32 bits Integer 10 Table 28 – Default Parameters 23 RGPSM202 SlimGPS™ Receiver Range values seconds 2400 / 4800 / 9600 / 19200 / 38400 / 57600 2400 / 4800 / 9600 / 19200 / 38400 / 57600 – ...
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... Application settings Number of channels Week epoch 7 APPLICATION INFORMATION 7.1 ACTIVE ANTENNA For proper operation, the RGPSM202 receiver should be operated with an active GPS antenna that has the following characteristics Power supply voltage Frequency range LNA Gain LNA NF Antenna and LNA total Gain © ...
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... RGPSM202 SlimGPS™ Receiver WGS-84 Datum Local Datum 51° 23’ N 51° 22’ 58.454” N 3° 20’ W 3° 19’ 55.396” W 100.0 m 51.497 m 33° ...
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... Dublin Ireland Dublin © Semtech 2005 NNEA Syntax $PXEMSGS,16,-43,-163,45*72 $PXEMSGS,17,506,-122,611*58 $PXEMSGS,18,7,-10,26*51 $PXEMSGS,19,0,0,4.5*60 $PXEMSGS,20,0,0,0*75 26 RGPSM202 SlimGPS™ Receiver WGS-84 Datum Local Datum 2° 2° 1’ 58.354” N 49° 19' E 49° 19’ 2.383” E 100.0 m 141.943 m 53° 22' N 53° 21’ 59.163” N 6° ...
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... Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. Contact Information Phone (805) 498-2111 Fax : (805) 498-3804 © Semtech 2005 Semtech Corporation Wireless and Sensing Products Division 200 Flynn Road, Camarillo, CA 93012 27 RGPSM202 SlimGPS™ Receiver www.semtech.com ...