Summary of LR9548S
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Lr9548s gps module lr9548s gps module.
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Copyright ©2006 leadtek research inc. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of leadtek research inc....
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I contents features.....................................................................................................................................1 h ardware and s oftware .........................................................................................................1 p erformance .....
Page 4: Introduction
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 1/20 preliminary confidential - information is subject to change without prior notice. Introduction the leadtek lr9548s gps module is a high sensitivity, low power, surface mount device (smd). This 20-ch...
Page 5: Advantages
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 2/20 preliminary confidential - information is subject to change without prior notice. Performance cold/warm/hot start time: 42/38/1 sec. At open sky and stationary environments. Reacquisition time: 0.1 ...
Page 6: Specifications
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 3/20 preliminary confidential - information is subject to change without prior notice. Specifications technical specifications feature item description chipset gsc3f sirfstariii single chip frequency l1,...
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 4/20 preliminary confidential - information is subject to change without prior notice. Environmental characteristics items description operating temperature range -40 deg. C to +85 deg. C storage tempera...
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 5/20 preliminary confidential - information is subject to change without prior notice. Reference design all ground pads attach directly to ground plane by way of via. All components are reference only..
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 6/20 preliminary confidential - information is subject to change without prior notice. Software the firmware used on leadtek lr9548s module is gsw3.2.0, the sirf standard gps software for sirfstariii rec...
Page 10: Electrical Specifications
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 7/20 preliminary confidential - information is subject to change without prior notice. Electrical specifications block diagram bandpass filter lna sirf gsc3f 16.369mhz tcxo 32.768khz crystal 2.85 vdc reg...
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 8/20 preliminary confidential - information is subject to change without prior notice. Pin settings pin name type description 1 freq_xfer i if not used, keep floating 2 nc i/o not connected 3 nc i/o not ...
Page 12: Mechanical Dimensions
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 9/20 preliminary confidential - information is subject to change without prior notice. Mechanical dimensions outline drawing tolerance: length 24.0 ± 0.4 mm width 20.0 ± 0.1 mm height 2.90 ± 0.1 mm.
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 10/20 preliminary confidential - information is subject to change without prior notice. (bottom view).
Page 14: Recommended Footprint
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 11/20 preliminary confidential - information is subject to change without prior notice. Recommended footprint (unit: mm).
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 12/20 preliminary confidential - information is subject to change without prior notice. Automated manufacturing components reel taping specification material: black conductive high impact polystyrene all...
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 13/20 preliminary confidential - information is subject to change without prior notice. Polystyrene alloy taping specifications 10 sprocket hole pitch cumulative tolerance ±0.20mm carrier camber is withi...
Page 17: Reflow Profile
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 14/20 preliminary confidential - information is subject to change without prior notice. Reflow profile high quality, low defect soldering requires identifying the optimum temperature profile for reflowin...
Page 18: Rohs Compliance
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 15/20 preliminary confidential - information is subject to change without prior notice. Rohs compliance.
Page 19: Ordering Information
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 16/20 preliminary confidential - information is subject to change without prior notice. Ordering information for every order of 1000 pcs , leadtek will ship the modules with the reel package (shown on pa...
Page 20: Glossary
Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 17/20 preliminary confidential - information is subject to change without prior notice. Glossary a-gps assisted gps or agps is a technology that uses an assistance server to cut down the time needed to f...
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 18/20 preliminary confidential - information is subject to change without prior notice. Differential gps (dgps) an extension of the gps system that uses land-based radio beacons to transmit position corr...
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 19/20 preliminary confidential - information is subject to change without prior notice. 1pps pulse which is generated once per second. Gps and some radio clocks and related timekeeping gear have a pulse-...
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Lr9548s gps module technical manual v1.52 © 2006 leadtek research inc. All rights reserved. Page 20/20 preliminary confidential - information is subject to change without prior notice. Time to first fix (ttff) the time it takes a gps receiver to find satellites after you first turn it on, when the g...
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Leadtek research inc. 18f, 166, chien-yi rd., chung ho, taipei hsien, taiwan (235) ©2006 leadtek research, inc. All rights reserved. Version 1.52 09/26/06.