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User Manual for unicore models including: UM220-IV M0 Industry Grade Multi GNSS Positioning Module, UM220-IV M0, Industry Grade Multi GNSS Positioning Module, Grade Multi GNSS Positioning Module, Multi GNSS Positioning Module, GNSS Positioning Module, Positioning Module, Module, Module UM220-IV M0
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DocumentDocumentINSTALLATION AND OPERATION
USER MANUAL
WWW.UNICORECOMM.COM
UM220-IV M0
Industry Grade Multi-GNSS Positioning Module
Copyright© 2009-2023, Unicore Communications, Inc. Data subject to change without notice.
Revision History
Version Ver.1.0.0 Ver.1.0.1 Ver.1.0.2 Ver.1.0.4 R1.1 R1.2 R1.3 R2 R2.1
R2.2
R2.3 R2.4
R2.5 R2.6
Revision Primary version Alpha release, Revised Pin definition Revised module size Beta release, align with Chinese version 1.0.4 Chapter 6.2: add shelf life Chapter 6.2: revise the MSL instructions Add CE logo Add a footnote to elaborate CEP Hardware version 2.3 released, update the related parameters Add the descriptions of SMT stencil Update power supply VCC and V_BCKP; Add different PN information and corresponding solutions to avoid leakage power Add notes in Section 4.4 If hot start is not used, connect V_BCKP to VCC. Revise the VSWR in section 1.2 Optimize the description of antenna power supply; Add Chapter 4.2 Power Supply Requirements Revise Figure 3-1 Mechanical Layout
Date Jun.2018 Oct.2018 Dec.2018 Aug. 2019 Sep. 2019 Jan. 2020 Oct. 2020 Dec. 2020 Jun. 2021
Nov. 2021
Nov. 2021 Nov. 2022
Apr. 2023 Oct. 2023
Legal right notice
This manual provides information and details on the products of Unicore Communication, Inc. ("Unicore") referred to herein.
All rights, title and interest to this document and the information such as data, designs, layouts contained in this manual are fully reserved, including but not limited to the copyrights, patents, trademarks and other proprietary rights as relevant governing laws may grant, and such rights may evolve and be approved, registered or granted from the whole information aforesaid or any part(s) of it or any combination of those parts.
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UM220-IV M0 User Manual
Unicore holds the trademarks of "", "UNICORECOMM" and other trade name, trademark, icon, logo, brand name and/or service mark of Unicore products or their product serial referred to in this manual (collectively "Unicore Trademarks"). This manual or any part of it, shall not be deemed as, either expressly, implied, by estoppel or any other form, the granting or transferring of Unicore rights and/or interests (including but not limited to the aforementioned trademark rights), in whole or in part.
Disclaimer
The information contained in this manual is provided "as is" and is believed 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 respect to the fitness for a particular purpose/use, the accuracy, reliability and correctness of the information contained herein. Information, such as product specifications, descriptions, features and user guide in this manual, are subject to change by Unicore at any time without prior notice, which may not be completely consistent with such information of the specific product you purchase. Should you purchase our product and encounter any inconsistency, please contact us or our local authorized distributor for the most up-to-date version of this manual along with any addenda or corrigenda.
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Foreword
This document offers you information in the features of the hardware, the installation, specification and use of UNICORECOMM UM220-IV M0 product. Readers It Applies to This document is applied to the technicians who know GNSS Receiver to some extent but not to the general readers. Structure of the Document This document includes the following: Introduction: Briefly explaining the functions, performances and installing of the product Installation: Containing the list of the product package and the details of product installation Technical Specification: Offering technical specifications of the product Hardware Specification: Offering all the information of hardware interface of the product Module disassembly introduction Package: Provide packing instructions of UM220-IV M0 modules
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UM220-IV M0 User Manual
Contents
1 Introduction ............................................................................................... 1
1.1
Overview ........................................................................................................1
1.2
Key Features ..................................................................................................2
1.3
Interface ......................................................................................................... 3
2 Product Installation ................................................................................... 4
2.1
Installation Preparation .................................................................................4
2.2
Hardware Installation ....................................................................................5
3 Technical Specifications ........................................................................... 6
3.1
Electrical Specifications ................................................................................6
3.2
Operation Condition.......................................................................................6
3.3
Dimensions ....................................................................................................7
3.4
Pin Definition (Top View) ...............................................................................8
4 Hardware Design ....................................................................................... 9
4.1
Design in Considerations...............................................................................9
4.2
Power Supply Requirements .......................................................................10
4.2.1 4.2.2
Main Supply (VCC) ................................................................................................ 10 Backup Supply (V_BCKP) ..................................................................................... 10
4.3
Avoid Leakage Power ..................................................................................10
4.4
Antenna ........................................................................................................ 11
4.5
Reset ............................................................................................................12
4.6
Serial Port ....................................................................................................12
5 Disassembly ............................................................................................ 13
6 Package................................................................................................... 13
6.1
Product Label Description ...........................................................................13
6.2
Package Description....................................................................................13
7 Clean ....................................................................................................... 15
8 Reflow Soldering ..................................................................................... 15
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1 Introduction
1.1 Overview
UNICORECOMM UM220-IV M0 is a dual-system GNSS module. It is designed on the basis of UNICORECOMM's low power, multisystem, high performance SoC-UFirebird designed. It supports BDS B1+GPS L1 dual-system joint positioning and single system positioning. UM220-IV M0 is compact in size and uses SMT pads to support fully automatic integration of standard discharge and reflow soldering, especially suitable for low cost and low power consumption fields. The radio equipment is in compliance with Directive 2014/53/EU.
Model
Figure 1-1 UM220-IV M0 Module
Grade
System
PN
Interface
Data Updating
Rate
Industr y Automotive
GPS BDS GLONASS UART1 UART2
UM220-IV M0 2310408000024
1Hz
UM220-IV M0 2330322000028
1Hz
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1.2 Key Features
Power Voltage Power Consumption RF Input Input VSWR Input Impedance Antenna Gain Physical Characteristics Dimension Environment Operating Temperature Storage Temperature RoHS Input/output Data Interface UART GNSS Performance Frequency
TTFF
Positioning Accuracy2 Velocity Accuracy (RMS)
Sensitivity
1 Assist date input 2 CEP, 50%
UM220-IV M0 User Manual
+3.0~3.6 VDC 90mW
2.5 50 1530dB
10.1*9.7*2.2mm
-40 ~ +85 -45 ~ +90 Compliant
1 UART, LVTTL. Baud rate 4800115200bps
BDS B1: 1561.098MHz GPS L1: 1575.42MHz
Cold Start: 28s Hot Start: 1s Reacquisition: 1s AGNSS1: 4s
2.0m (dual-system horizontal, open sky) 3.5m (dual-system vertical, open sky)
0.1m/s (dual-system, Open sky)
BDS
GPS
Tracking
-161dBm
-161dBm
2
1PPS Accuracy (RMS) Data Updating Rate Data Output
1.3 Interface
Acquisition
-146dBm
Hot start
-154dBm
Reacquisition -157dBm
20ns
1Hz
NMEA 0183, Unicore Protocol
-147dBm -155dBm -158dBm
Battery
UM220-IV M0
LNA
SAW
GNSS IC
TCXO
RTC Crystal
RESE T_N UART
PPS
UART
Figure 1-2 Structure Chart
UM220-IV M0 module 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 up to 115200bps3.
1PPS UM220-IV M0 outputs 1PPS with adjustable pulse width and polarity.
3 For more information, see UFirebird_Standard Positioning Products Protocol Specification. 3
UM220-IV M0 User Manual
2 Product Installation
2.1 Installation Preparation
UM220-IV M0 modules are Electrostatic Sensitive Devices and require special precautions when handling.
Follow the steps in section 2.2 in the correct order. Electrostatic discharge (ESD) may cause damage to the device. All operations
mentioned in this chapter should be carried out on an antistatic workbench, wear an antistatic wrist strap and use a conductive foam pad. If an 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. Hold the edge of the module, not in direct contact with the components. Please check carefully whether the module has obviously loose or damaged components. If you have questions, please contact us or your local dealer. Figure 2-1 shows the typical installation of UM220-IV M0 EVK suites.
Antenna
UM220-IV M0 EVK
Figure 2-1 Typical Installation of UM220-IV M0 EVK
Please check the contents of the package carefully after receiving the package of UM220-IV M0:
UM220-IV M0 EVK suitewith AC Adapter UM220-IV M0 User manual. uSTAR application package. Antenna. Antenna connection cable Direct serial cable PC
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Please keep the box and anti-static plastic bags for storage and handling.
2.2 Hardware Installation
After the above preparations are complete, follow the steps below to install: Step 1Make sure to take full anti-static measures, such as wearing an anti-static wrist strap, grounding the workbench; Step 2Open the UM220-IV M0 evaluation kit;
Step 3Select the GNSS antenna with appropriate gain, fix it in the non-block area,
using the appropriate cable to connect the antenna to UM220 EVK; Step 4Connect the PC to the EVK serial port through direct serial cable; Step 5Power the evaluation board and initialize the UM220-IV M0; Step 6Open the uSTAR Step 7Controlled the receiver through uSTAR to display constellations view, log messages, and receiver status.
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UM220-IV M0 User Manual
3 Technical Specifications
3.1 Electrical Specifications
Absolute Maximum Ratings
Item Power Supply (VCC) VCC Ripple
Pin Vcc Vrpp
Min
Max
Unit
-0.5 3.6
V
50
mV
Digital IO
Vin
-0.5 Vcc +0.2 V
Storage Temperature MSD (MSL)
Tstg
-45
90
Level 1 Level 2 Level 3 TBD
3.2 Operation Condition
Item
Pin
Power Supply (VCC)
Vcc
Min
Typical Value
Max
Unit
3.0
3.3
3.6
V
Peak Current
Iccp
Tracking Average Current
IACQ
29
30
Low Level Input Voltage Vin_low
High Level Input Voltage Low Level Output Voltage High Level Output Voltage
Vin_high 1.2 Vout_low Vout_high Vcc0.4
Antenna Gain
Gant
15
53
mA
31
mA
0.7
V
V
0.4
V
V
30
dB
Noise Figure
Nftot
2
dB
Operation Temperature Topr
-40
85
Condition
Condition Vcc=3.0 V Vcc=3.0V Iout=-8 mA Iout=8 mA
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3.3 Dimensions
Table 3-1 Dimensions
Symbol
Min (mm)
A
9.6
B
9.55
C
1.9
D
0.55
E
1.0
F
0.5
G
0.3
H
0.9
M
0.7
Typical Value (mm) 10.1 9.7 2.0 0.65 1.1 0.6 0.4 1.0 0.8
Max (mm) 10.7 9.85 2.1 0.95 1.2 0.7 0.5 1.1 0.9
Figure 3-1 Mechanical Layout
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3.4 Pin Definition (Top View)
UM220-IV M0 User Manual
No Name 1 GND 2 TXD 3 RXD 4 TIMEPULSE 5 NC
6 V_BCKP
7 VCC_IO 8 VCC 9 nRESET 10 GND 11 RF_IN 12 GND 13 NC 14 VCC_RF4 15 NC 16 NC 17 NC
10 GND
nRESET 9
11 RF_IN Top View VCC 8
12 GND
VCC_IO 7
13 NC
V_BCKP 6
14 VCC_RF
NC 5
15 NC
TIMEPULSE 4
16 NC
RXD 3
17 NC
TXD 2
18 NC
GND 1
Figure 3-2 UM220-IV M0
I/O Electrical level I O LVTTL I LVTTL O LVTTL I LVTTL
I 1.65V~3.6V
I 3.0V~3.6V I 3.0V~3.6V I LVTTL I I I O O =VCC I/O I/O I/O
Description Ground
UART 1-TX
UART 1-RX
1PPS
Reserve Voltage for RTC. If you do not use the hot start function, connect V_BCKP to VCC. Do NOT connect it to ground or leave it floating. GPIO power supply
Main power For reset, Low level active, if you do not use the pin, please leave it hanging Ground
GNSS signal input (BDS B1+GPS L1 Ground
Reserve
Output voltage RF section
Reserve
Reserve
Reserve
4 VCC_RF does not have short circuit detection function; 8
No Name 18 NC
I/O Electrical level I/O
Description Reserve
4 Hardware Design
4.1 Design in Considerations
To make UM220-IV M0 work normally, you need to properly connect the following: Connect all the GND pins to ground. Connect the RF_IN signal to the antenna, and the line will keep 50 impedance matching. Ensure COM1 is connected to a PC or an external processor, users can use this serial port to receive position data. COM1 is also necessary for firmware upgrades. In order to obtain good performance, special concern should be paid during the design: Power supply: Stable and low ripple power is necessary for good performance. Make sure the peak to peak voltage ripple does not exceed 50mV. - Use LDO to ensure the purity of power supply - Try to place LDO close to the module in layout - Widen the power circuit or use copper pour surface to transmit current - Avoid walking through any high-power or high inductance devices such as a magnetic coil UART interfaces: Ensure that the signals and baud rate of main equipment match that of UM220-IV M0 module Antenna interface: Make sure the antenna impedance matches, and the cable is short without any kinks , try to avoid acute angles Antenna position: In order to ensure a good signal-to-noise ratio, the antenna should be well isolated from any electromagnetic radiation source, especially an electromagnetic radiation in the frequency range of 1559 ~ 1605MHz Try to avoid designing in any circuits underneath UM220-IV M0 This module is a temperature sensitive device. Dramatic changes in temperature will result in reduced performance, so keep it away as far as possible from any high-power high-temperature air and heating devices.
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UM220-IV M0 User Manual
4.2 Power Supply Requirements
4.2.1 Main Supply (VCC)
The 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 ringing should be within 5% VCC. VCC power-on waveform: The time interval from 10% rising to 90% must be within
100 s ~ 10 ms. Power-on time interval: The time interval between the power-off (VCC < 0.4 V) to
the next power-on is recommended to be larger than 500 ms.
4.2.2 Backup Supply (V_BCKP)
If the hot start function is needed, users should supply backup power to the module. The voltage range of V_BCKP is 1.65 V ~ 3.6 V. Notes: The V_BCKP initial level when power-on should be less than 0.4 V. The V_BCKP ramp when power-on should be monotonic, without plateaus. The voltages of undershoot and ringing should be within 5% V_BCKP. V_BCKP power-on waveform: The time interval from 10% rising to 90% must be
within 100 s ~ 10 ms. Power-on time interval: The time interval between the power-off (V_BCKP < 0.4 V)
to the next power-on is recommended to be larger than 500 ms. The V_BCKP pin cannot be floating or connected to ground. When V_BCKP is not
used, it should be connected to VCC or connected to backup power.
4.3 Avoid Leakage Power
The module input ports of UM220-IV M0 include: RXD and GPIO. When the module is not powered on, if there is data input in the above ports, it will form a series of power on the module VCC. When the series voltage is higher than 1.6V, it may cause a failure of starting up when the module is powered on.
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Solution:
When the module is not powered on, make sure that the IO port connected to the module is in a high-resistance state or a low level to avoid leakage power. Another solution is to connect a 1K resistor in series to the serial port RX, and connect a 33 or 1K resistor in series to TX (There is no need to connect any resistor to the TX of the module with PN 2310408000024). It is also recommended to connect a 4.7K resistor in series to the Pin of other necessary PIOs.
4.4 Antenna
If the UM220-IV M0 uses an active antenna, the bias voltage V_BIAS is supplied to the antenna through a feed inductor. It's recommended to use an independent power as V_BIAS to supply the 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 module. Therefore, it's recommended to design an independent power rail for the antenna to reduce the possibility of damage to the module.
RF_IN
UM220 -IV M0
V_BIAS
VCC_RF
Figure 4-1 UM220-IV M0 Active Antenna Solution
If UM220-IV M0 uses a passive antenna, the antenna can be directly connected to the RF_IN pin. It should be noted that the use of passive antennas may cause a decrease in GNSS performance compared to active antennas.
RF_IN
UM220 -IV M0
VCC_RF
Figure 4-2 UM220-IV M0 Passive Antenna Solution
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UM220-IV M0 User Manual
4.5 Reset
If the reset pin nRESET of UM220-IV M0 module needs to be used, the following timing requirements must be met between the nRESET and the power supply VCC. During normal operation of the module, pulling down the nRESET pin over 5 ms can also reset the module.
> 5ms
VCC
nRESET
4.6 Serial Port
Figure 4-3 UM220-IV M0 Reset Requirement
UM220-IV M0 has one LVTTL serial port, for PC connection, please use a RS232 voltage level converter.
UM220-IV M0
UART1
RS232
RS232 1
PC
Figure 4-4 Connect COM to PC
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5 Disassembly
When it is necessary to remove the module, it is recommended to melt the soldering tin of the pins on both sides of the module with an electric soldering iron and remove the module with tweezers. Do not use other means to remove the module (such as using a hot air gun to blow the module), may lead to module damage.
6 Package
6.1 Product Label Description
6.2 Package Description
The UM220-IV M0 modules are packaged in vacuum sealed aluminum foil anti-static bags with desiccant and moisture-proof agent. When using reflow welding process to weld modules, please strictly comply with IPC standard to conduct humidity control on modules. As packaging materials such as carrier belt can only withstand the temperature of 65 degrees Celsius, modules shall be removed from the packaging during baking.
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UM220-IV M0 User Manual
Item Module Reel Size Carrier Tape
Figure 6-1 UM220 package
Description 1000 pics/reel Workpiece tray: 13" External diameter 330mm, internal diameter 100mm, width 24mm, thickness 2.0mm Space between: 20mm
Check the humidity indicator card before soldering. The 30% indication is blue under normal conditions, as shown in Figure 6-2. Bake modules firstly before soldering if the 30% indication turns pink, as shown in Figure 6-3. The UM220-IV M0 modules are rated at MSL level 3, for more MSL information, please refer to www.jedec.org.
Figure 6-2 the 30% indication is blue 14
Figure 6-3 the 30% indication is pink
The shelf life of UM220-IV M0 is one year.
7 Clean
Do not use alcohol or other organic solvents to clean, or it may lead to flux residues flooding into the shielding shell, causing mildew and other problems.
8 Reflow Soldering
In order to avoid device falling off, the module should be placed on the top of the main board during welding. Reflow soldering temperature curve is recommended as shown in Figure 8-1 below (M705-GRN360 is recommended for solder paste). Note: the module can only be welded 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, and the thickness of the stencil should be above 0.15mm, and 0.18mm is recommended.
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Unicore Communications, Inc. 7
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
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