Lr9548s gps module lr9548s gps module.
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....
I contents features.....................................................................................................................................1 h ardware and s oftware .........................................................................................................1 p erformance .....
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...
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 ...
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,...
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...
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..
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...
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...
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 ...
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.
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).
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).
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...
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...
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...
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.
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...
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...
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...
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-...
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...
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.