Related Manuals for unicore UM670A-03
Summary of Contents for unicore UM670A-03
- Page 1 HARDWARE REFERENCE DESIGN WWW.UNICORE.COM UM670A-03 Automotive-grade Multi-Constellation Dual-Frequency GNSS Navigation and Positioning Module Copyright© 2009-2023, Unicore Communications, Inc. Data subject to change without notice.
- Page 2 UM670A-03 Hardware Reference Design Revision History Version Revision History Date R1.0 First release Dec., 2023...
- Page 3 This manual does not represent, and in any case, shall not be construed as a commitments or warranty on the part of Unicore with respect to the fitness for a particular purpose/use, the accuracy, reliability and correctness of the information contained herein.
- Page 4 UM670A-03 Hardware Reference Design Foreword This document describes the hardware reference design of Unicore UM670A-03 module. This is only a draft version, for reference only. Target Readers This document applies to technicians who are familiar with GNSS receivers.
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Page 5: Table Of Contents
Contents Block Diagram ..................1 UM670A-03 Peripheral Design ............... 1 Main Power VCC ......................3 Backup Battery V_BCKP ....................4 Active Antenna Feed Circuit .................... 5 Reset Circuit ........................5 Appendix: Schematics of Reference Design ..........5... -
Page 6: Block Diagram
L5/L2 GNSS GNSS CLOCK TCXO Figure 1-1 UM670A-03 Block Diagram 2 UM670A-03 Peripheral Design Connect the ANT_IN signal to the antenna, and note the 50 Ω impedance matching. Connect all the GND pins to the ground. Leave the IO pin open if not used ... - Page 7 UM670A-03 RF Line R0805 UM670A-03 Module Note: PINs leave OPEN if not used Figure 2-1 UM670A-03 Peripheral Design UM670A-03 Peripheral Design UC-08-M75 EN R1.0...
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Page 8: Main Power Vcc
UM670A-03 Figure 2-2 UM670A-03 GND Pads Main Power VCC The working voltage range of the module UM670A-03 is 2.7 V to 3.6 V. Note: The VCC initial level when power-on should be less than 0.4 V. The VCC ramp when power-on should be monotonic, without plateaus. -
Page 9: Backup Battery V_Bckp
Backup Battery V_BCKP When using the hot start function of the module UM670A-03, you need to provide backup power for the module. The input range of V_BCKP is 1.7 V to 3.6 V. Note: The V_BCKP initial level when power-on should be less than 0.4 V. -
Page 10: Active Antenna Feed Circuit
Connect the ANT_IN signal to the antenna, and note a 50 Ω impedance matching. Figure 2-3 Antenna Feed Circuit Reset Circuit UM670A-03 supports system reset. The pin RESET_N is active low and the active time should be no less than 5 ms. 3 Appendix: Schematics of Reference Design UC-08-M75 EN R1.0... - Page 11 ANT BIAS UM670A-03 RF Line UM670A-03 R0805 UM670A-03 Module Note: PINs leave OPEN if not used Unicore Communications,Inc Unicore Communications,Inc Title Title Title UM670A-03 REF Size Size Size Docum ent Number Docum ent Number Docum ent Number Da te: Da te:...
- Page 12 和芯星通科技（北京）有限公司 Unicore Communications, Inc. 北京市海淀区丰贤东路 7 号北斗星通大厦三层 F3, No.7, Fengxian East Road, Haidian, Beijing, P.R.China, 100094 www.unicore.com Phone: 86-10-69939800 Fax: 86-10-69939888 info@unicorecomm.com www.unicore.com...