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Reflow Soldering

In order to avoid device falling off, the module should be placed on the top of the main

board during soldering. Reflow soldering temperature curve is recommended as shown

in figure 8-1 below (M705-GRN360 is recommended for solder paste).

Note: The module can be soldered only once.

Figure 8-1 Reflow Soldering Line

Note: The apertures in the stencil need to meet the customer's own design requirements

and inspection specifications. The thickness of the stencil should be above 0.15mm, and

0.18mm is recommended.

Содержание UM220-IV NL

Страница 1: ...INSTALLATION AND OPERATION USER MANUAL WWW UNICORE COM Copyright 2009 2024 Unicore Communications Inc Data subject to change without notice UM220 IV NL Industry Grade Multi GNSS Positioning Module...

Страница 2: ...1 R1 7 If hot start is not used connect V_BCKP to VCC Revise the VSWR in section 1 2 Nov 2022 R1 8 Optimize the description of antenna power supply Add Chapter 4 3 Power Supply Requirements Apr 2023 R...

Страница 3: ...to be true and correct at the time of its publication or revision This manual does not represent and in any case shall not be construed as a commitments or warranty on the part of Unicore with respec...

Страница 4: ...owings Introduction Briefly explaining the functions performances and structure of the product Installation Contains the list of the product package and the details of product installation Technical S...

Страница 5: ...tions 6 3 2 Operation Condition 6 3 3 Dimensions 7 3 4 Pin Definition Top View 8 3 5 PCB Packaging 9 4 Hardware Design 10 4 1 Design in Considerations 10 4 2 Avoid Power Leakage 11 4 3 Power Supply Re...

Страница 6: ...ioning time with the help of assisted data service when connected to network UM220 IV NL is compact in size with SMT pads and supports fully automatic integration of standard pick and place and reflow...

Страница 7: ...e Temperature 45 C 90 C RoHS Compliant Input Output Data Interface UART 2 UART LVTTL Baud rate 4800 115200bps GNSS Performance Frequency BDS B1 1561 098MHz GPS L1 1575 42MHz TTFF Cold Start 28s Hot St...

Страница 8: ...rial port which supports data transfer and firmware upgrade The signal input output level is LVTTL The default baud rate varies according to the version of firmware and the baud rate can be configured...

Страница 9: ...conductive foam pad If antistatic workbench is not available wear an antistatic wrist strap and connect the other end to a metal frame to play a role in anti static protection Hold the edge of the mo...

Страница 10: ...such as wearing an anti static wrist strap and grounding the workbench Step 2 Open the UM220 IV NL evaluation kit Step 3 Select the GNSS antenna with appropriate gain fix it in the non block area usin...

Страница 11: ...l 2 Level 3 TBD 3 2 Operation Condition Item Symbol Min Typical Max Unit Condition Power Supply Vcc Vcc 3 0 3 3 3 6 V Peak Current Iccp 28 mA Vcc 3 0 V Tracking Average Current IACQ 15 17 19 mA Vcc 3...

Страница 12: ...al mm Max mm A 15 9 16 0 16 5 B 12 05 12 2 12 35 C 2 2 2 4 2 6 D 0 9 1 0 1 3 E 1 0 1 1 1 2 F 2 9 3 0 3 1 G 0 9 1 0 1 3 H 0 7 0 8 0 9 K Outside the hole 0 7 0 8 0 9 N Inside the hole 0 4 0 5 0 6 M 0 8...

Страница 13: ...Low level active if you do not use the pin please leave it floating 2 AADET_N I LVTTL Antenna detection 3 TIMEPULSE O LVTTL Time pulse 1PPS 4 NC I LVTTL Reserve 5 GPIO2 I LVTTL Antenna detection 6 TX...

Страница 14: ...tion connect V_BCKP to VCC Do NOT connect it to ground or leave it floating 23 VCC 3 0V 3 6 V Main power 24 GND Ground 3 5 PCB Packaging Figure 3 3 UM220 IV NL Recommended PCB Packaging unit mil in br...

Страница 15: ...ripple power is necessary for good performance Make sure the peak to peak voltage ripple does not exceed 50mV Using LDO to ensure the purity of power supply Try to place LDO close to the module in la...

Страница 16: ...e voltage range of VCC is 3 0 V 3 6 V Notes 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 The voltages of undershoot and...

Страница 17: ...antenna If the antenna power supply and the module s main supply VCC use the same power rail the ESD surge and overvoltage from the antenna will have an effect on VCC which may cause damage to the mo...

Страница 18: ...ply VCC During normal operation of the module pulling down the nRESET pin over 5 ms can also reset the module VCC nRESET 5ms Figure 4 3 UM220 IV NL Reset Requirement 4 6 Serial Port UM220 IV NL has tw...

Страница 19: ...le damage 6 Package 6 1 Product Label Description Main Model Sub model Serial Number Part Number Product QR Code XX 6 2 Package Description The UM220 IV NL module is packaged in vacuum sealed aluminum...

Страница 20: ...ace between 20mm Check the humidity indicator card before soldering The 30 indication is blue for normal conditions as shown in figure 6 2 Bake modules firstly before soldering if the 30 indication tu...

Страница 21: ...he 30 indication is pink The shelf life of UM220 IV NL is one year 7 Clean Do not use alcohol or other organic solvents to clean which may lead to soldering flux residues flooding into the shielding s...

Страница 22: ...curve is recommended as shown in figure 8 1 below M705 GRN360 is recommended for solder paste Note The module can be soldered only once Figure 8 1 Reflow Soldering Line Note The apertures in the stenc...

Страница 23: ...Unicore Communications Inc 7 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...