RGPSM002WA Semtech, RGPSM002WA Datasheet

MODULE GPS RECEIVER LOW POWER

RGPSM002WA

Manufacturer Part Number
RGPSM002WA
Description
MODULE GPS RECEIVER LOW POWER
Manufacturer
Semtech
Datasheet

Specifications of RGPSM002WA

Frequency
1.575GHz
Sensitivity
-143dBm
Modulation Or Protocol
GPS
Applications
Automotive, Laptop, PDA
Current - Receiving
19mA
Data Interface
Connector, 16 Contact Board to Board
Voltage - Supply
2.7 V ~ 3.6 V
Package / Case
Module
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Operating Temperature
-
Memory Size
-
Data Rate - Maximum
-
Antenna Connector
-
RGPSM002
GPS Receiver Module
Ultra Low Power Position-Velocity-Time Platform
GENERAL DESCRIPTION
The ultra low power RGPSM002 GPS Receiver is a
fully autonomous module that provides position, speed
and
Positioning System. The module shows high position
and speed accuracy performances as well as high
sensitivity and tracking capabilities in urban canyon
conditions. They can easily be interfaced with any
application controller through a simple serial interface.
The solutions come in a small form factor package that
facilitates integration into portable equipment. The
RGPSM002 delivers major advancements in GPS
performances, accuracy, integration, computing power
and flexibility. It is designed to simplify the embedded
system integration process.
The
hardware/software architecture supported by the
Semtech XE1610 GPS chipset.
APPLICATIONS
Rev 1 August 2005
Automotive
Fleet management/asset tracking
Palmtop, Laptop, PDA
Location Based Services enabled devices
Handheld receivers
time
RGPSM002
information
is
derived
based
from
on
the
the
Global
mixed
1
KEY FEATURES
REFERENCE
RGPSM002 – 16M Flash version
urban canyon performances
solution. Easily integrated into existing systems
Flash memory back-up
High sensitivity: to -143 dBm tracking, superior
Position accuracy: < 5m CEP (50%) without SA
(horizontal)
Warm Start is under 32 seconds (50%)
Hot Start is under 12 seconds (50%)
Ultra low power: 19 mA @ 3V full power, 3
additional low power modes
Embedded ARM7TDMI
Small form factor and low cost solution
Ready-to-plug solution, fully autonomous PVT
On-board RAM for GPS navigation data, on-board
PPS output
Bidirectional NMEA interface
Real Time Clock with separate back-up power
supply
RGPSM002
GPS Receiver
www.semtech.com

Related parts for RGPSM002WA

RGPSM002WA Summary of contents

Page 1

... RGPSM002 delivers major advancements in GPS performances, accuracy, integration, computing power and flexibility designed to simplify the embedded system integration process. The RGPSM002 is based hardware/software architecture supported by the Semtech XE1610 GPS chipset. APPLICATIONS • Automotive • Fleet management/asset tracking • Palmtop, Laptop, PDA • ...

Page 2

... Split Search Mode 5.8 Hardware Reset and System Watchdog 6 DEFAULT SETTINGS 6.1 GPS Engine Configuration 6.1.1 Receiver configuration 6.1.2 Filter configuration 6.1.3 Offset configuration 6.1.4 Application settings 7 APPLICATION INFORMATION 7.1 Active Antenna © Semtech 2005 Table of Contents 2 RGPSM002 GPS Receiver ...

Page 3

... On-board RTC can be supplied by a separate back-up power supply if the main supply is turned off Application software can be customized for high volume applications (Flash memory) 2 FUNCTIONAL BLOCK DIAGRAM ANT ANT BP BP FILTER FILTER FILTER FILTER LNA LNA Active Antenna Active Antenna © Semtech 2005 Q LPF Q LPF I LPF I LPF I I RF+ RF DOWN- DOWN- BASEBAND ...

Page 4

... Position Accuracy • Horizontal, SA off • DGPS corrected Timing output accuracy PPS output (rising edge) © Semtech 2005 DESCRIPTION Power and Signal Ground ON / Off command line 3.0 to 3.6 Volts DC Input Power Supply UART Speed Serial Receive Data, Port A, GPS NMEA Data ...

Page 5

... MECHANICAL INTERFACE 4.3.1 RF Interface Connector Subminiature HFL. Works with 3.0V active antenna 4.3.2 Data Interface Connector 16 contact board-to-board flat cable connector. Ref: Fujikura DDK FF6-16A-R15 or equivalent © Semtech 2005 Min. Low High 2.0V Low High 2.6V Table 2 – Electrical specifications ...

Page 6

... This function is useful when the initial position is known to be incorrect, for example when the receiver is powered down, put on a plane, flown 20,000 km, and then warm-started. See timing information in the figure below. This input pin has a pull-up resistor. © Semtech 2005 1 second ~ 83 ms. ...

Page 7

... GPS receiver functions are turned OFF, MCU clock is stopped, RTC is running on the Back-up supply “LP” NMEA com Power save © Semtech 2005 (Delay > 100 ms, <1.5 sec.) Beginning of the ‘Delete Initial Position’ task Figure 2 – DELPOSN timing diagram VCC pin ...

Page 8

... When turned on, after the internal power-up sequence, the RGPSM002 will send the NMEA sentences through its TXA pin. In this configuration, the serial port settings, the type of NMEA sentences, and the output rate are those defined in Flash in the Default Parameters Table (see Section 6 below). These parameters can then be temporarily modified by © Semtech 2005 8 RGPSM002 GPS Receiver www ...

Page 9

... VCC is turned off. 5.3 NMEA STANDARD MESSAGE SET SPECIFICATION The RGPSM002 supports NMEA-0183. Brief descriptions of the output 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 ...

Page 10

... HDOP VDOP Checksum <CR><LF> 1 Satellite used in solution. Value M A © Semtech 2005 Description Fix not available or invalid GPS SPS Mode, fix valid Differential GPS, SPS Mode, fix valid GPS PPS Mode, fix valid Table 8. Position Fix Indicator Example Description $GPGLL GLL protocol header 3723 ...

Page 11

... Depending on the number of satellites tracked multiple messages of GSV data may be required. Example: The values reported in this example are interpreted as shown in Table 13. Two messages are required to complete the data transmission. $GPGSV,2,1,07,07,79,048,42,02,51,062,43,26,36,256,42,27,27,138,42*71 $GPGSV,2,2,07,09,23,313,42,04,19,159,41,15,12,041,42*41 © Semtech 2005 Description Fix not available 2D 3D Table 12. Mode 2 ...

Page 12

... Speed Units Mode Indicator Checksum <CR><LF> 1 All "course over ground" data are geodetic WGS84. Example: The values reported in this example are interpreted as shown in Table 15: $GPVTG,137.7,T,139.6,M,007.4,N,013.7,K,A*47 © Semtech 2005 Example Units Description $GPRMC RMC protocol header 161229.487 Hh mm ss.sss data valid data not valid 3723 ...

Page 13

... The requested sentence will be sent only once. The GPQ message is defined in Table 17. Name Message ID NMEA id <CR><LF> Example: $GPGPQ,RMC*21 $GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, 02.6,W,A*10 © Semtech 2005 Example Units Description $GPZDA ZDA protocol header 114523.62 hhmmss.ss ...

Page 14

... Description: This sentence contains information which helps a monitoring station figure out the status of the receiver. 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 14 RGPSM002 GPS Receiver www ...

Page 15

... This value is sent as an ASCII string ‘0131’ in the xxxx field of the NM sentence. Table 20 Possible MASK field values for the NM command Example: $PXEMSNM,0008,01*6E $PXEMRNM,a*6E (response to set: a – action status success failure) Example: $PXEMQNM*6E (query) $PXEMRNM,0119,01*6E (response to query) © Semtech 2005 Example Units Description $PXEMaTF TF protocol header, ( query response BBFlash status on startup (A = valid invalid Almanac completion status (A = complete ...

Page 16

... Name Message ID Command <CR><LF> Example: $PXEMSRT,W*6E (set) $PXEMRRT,a*6E (response to set: a – action status success failure) © Semtech 2005 Example Units Description $PXEMaPS Proprietary PS protocol header, a-mode (S = set response0 1 PPS output switch ( OFF) End of message termination Table 21 PS Data Format ...

Page 17

... Australian National & South American 1969 02 Bessel 1841 Ethiopia 03 Bessel 1841 Namibia 04 Clarke 1866 05 Clarke 1880 06 Everest Brunei and E. Malaysia © Semtech 2005 Example Units Description $PXEMaVR Proprietary RT protocol header, a-mode (Q = query response measurement platform (MPM) firmware A = FirstGPS API N = FirstGPS Library ...

Page 18

... Set the RTC time The purpose of GPS time is to allow use of the almanac data and position to determine which satellites are in view and to allow rough ranging to the satellites. XE1610-PVT products load GPS time every start-up. If the local RTC, from which © Semtech 2005 6377276.345 6377301.243 6377309 ...

Page 19

... So, the recommendation is to set the initial position only if its accuracy is better than 1,200 km. Important Note: after the receiver gets this command the content of the GPS data RAM will be saved in the back-up Flash upon the first position fix. © Semtech 2005 19 RGPSM002 GPS Receiver ...

Page 20

... 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 20 RGPSM002 GPS Receiver ...

Page 21

... In addition, the receiver firmware includes a system watchdog reset procedure. Should a system exception occurs, the receiver will execute a software reset to restart operation in a safe mode. In this case the receiver will not have position fixes for 15 seconds on average. © Semtech 2005 21 RGPSM002 GPS Receiver ...

Page 22

... Elevation Mask (radian) 30 Signal Level Mask (AMU) 31 DOP Mask 32 PDOP Switch 33 Geodetic System Ellipsoid 34 Geodetic System Delta X 35 Geodetic System Delta Y 36 Geodetic System Delta Z 37 BBFlash Update rate (minutes) © Semtech 2005 Data Type Default value Char Y Integer 1 second Char Y Char ...

Page 23

... For proper operation, the RGPSM002 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 © Semtech 2005 DGPS Off 0 ppm -1 ppm 8 1024 the offset number of 1024 week periods since 6 January 1980 ...

Page 24

... Karachi Singapore Singapore Russia Moscow Egypt Cairo Marshall Island Majuro Indonesia Djakarta France Paris © Semtech 2005 NNEA Syntax $PXEMSGS,00,375,-111,431*78 $PXEMSGS,01,-134,-48,149*40 $PXEMSGS,02,-148,507,685*5C $PXEMSGS,03,616,-97,251*60 $PXEMSGS,04,-3,142,183*50 $PXEMSGS,05,-128,-18,224*44 $PXEMSGS,06,-679,669,-48*4C $PXEMSGS,07,210,814,289*7D $PXEMSGS,08,295,736,257*73 $PXEMSGS,09,283,682,231*7B $PXEMSGS,10,-11,851,5*62 $PXEMSGS,11,1 ...

Page 25

... Country City Somalia Mogadiscio Ireland Dublin Singapore Singapore Ireland 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 Table 29 - Datums 25 RGPSM002 GPS Receiver WGS-84 Datum Local Datum 2° 2° 1’ 58.354” N 49° 19' E 49° ...

Page 26

... No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. Semtech. assumes no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range ...

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