UNICORECOMM UM220-IV M0 Manual
Gnss positioning module
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Also See for UM220-IV M0:
- Installation and operation user manual (19 pages) ,
- User manual (19 pages) ,
- Additional instructions for installation and operation (7 pages)
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Summary of Contents for UNICORECOMM UM220-IV M0
- Page 1 HARDWARE REFERENCE DESIGN WWW.UNICORECOMM.COM UM220-IV M0 GNSS Positioning Module Copyright© 2009-2020, Unicore Communications, Inc. Data subject to change without notice.
- Page 2 Revision History Version Revision History Date Ver. 1.0 HW reference design, primary Aug. 2018 Ver. 1.1 Change the symbol of V_BCKP from button Aug. 2019 battery to power TXD connects 1K resistance in series R1.2 Update Copyright time Apr.
- Page 3 UM220-IV M0 Hardware Reference Design Contens Minimum System Reference Circuit ..................1 Reference Circuit Using a Passive Antenna ................2 Attachment ..........................5...
- Page 4 1. Minimum System Reference Circuit Supply 2.8V~3.6V power VCC Ground all GND pins of the module Connect RF_IN signal to antenna, note the 50 Ω impedance match on the circuit 100nF 100pF TIMEPULSE 100nF VCC_RF 68nH VBCKP V_BCKP VCC_IO RF_IN...
- Page 5 UM220-IV M0 Hardware Reference Design 2. Reference Circuit Using a Passive Antenna To ensure the system performance, low noise amplifier and filter should be added between the passive antenna and the module RF_IN The VCC_RF output of the module is recommended for power supply with LNA ...
- Page 6 3. Attachment Here are two options to avoid module startup abnormality caused by string power. Option 1 No external pull-up resistor is allowed to connect with the output pin TXD； Option 2 When the module is not powered on, make sure the IO port connected to the module is in high resistance state or low level to avoid string power.
- Page 7 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.unicorecomm.com Phone: 86-10-69939800 Fax: 86-10-69939888 info@unicorecomm.com www.unicorecomm.com...
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