unicore UM220-IV M0 Industry Grade Multi-GNSS Positioning Module User Manual

User Manual for unicore models including: UM220-IV M0 Industry Grade Multi-GNSS Positioning Module, UM220-IV M0, Industry Grade Multi-GNSS Positioning Module, Multi-GNSS Positioning Module, Positioning Module

UM220-IV M0 User Manual EN

Yufeng Zhang

UM220-IV M0 User Manual EN

UM220-IV M0 User Manual 1 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

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UM220-IV M0 User Manual EN R2 41

INSTALLATION AND OPERATION
USER MANUAL
WWW.UNICORECOMM.COM
UM220-IV M0
Industry Grade Multi-GNSS Positioning Module
Copyright© 2009-2022, 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

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 string power Add the Note in Section 4.3 If hot start is not used, connect V_BCKP to VCC. Revise the VSWR in section 1.2

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

Disclaimer Information in this document is subject to change without notices and does not represent a commitment on the part of Unicore Communication, Inc. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose without the express written permission of a duly authorized representative of Unicore Communications, Inc. The information contained within this manual is believed to be true and correct at the time of publication.

UM220-IV M0 User Manual
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
ii

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

AVOID STRING POWER.....................................................................................................10

4.3

ANTENNA ........................................................................................................................ 10

4.4

SERIAL PORT...................................................................................................................11

5 DISASSEMBLY............................................................................ 12

6 PACKAGE .................................................................................... 12

6.1

PRODUCT LABEL DESCRIPTION ........................................................................................ 12

6.2

PACKAGE DESCRIPTION ................................................................................................... 12

7 CLEAN ......................................................................................... 14

8 REFLOW SOLDERING ................................................................. 14

UM220-IV M0 User Manual
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

Interface

Data Updating
Rate

Industr y Automotive
GPS BDS GLONASS UART1 UART2

UM220-IV M0 2310408000024

1Hz

UM220-IV M0 2330322000028

1Hz

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)

+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)

1 Assist date input 2 CEP, 50%
2

Sensitivity
1PPS Accuracy (RMS) Data Updating Rate Data Output

UM220-IV M0 User Manual

BDS

Tracking

-161dBm

Acquisition

-146dBm

Hot start

-154dBm

Reacquisition -157dBm

20ns

1Hz

NMEA 0183, Unicore Protocol

GPS -161dBm -147dBm -155dBm -158dBm

1.3 Interface
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 is 9600bps, which is adjustable, and can be configured up to 115200bps.

1PPS UM220-IV M0 outputs 1PPS with adjustable pulse width and polarity.

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
Figure 2-1
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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UM220-IV M0 User Manual
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.
5

3 Technical Specifications

3.1 Electrical Specifications

Absolute Maximum Ratings Item Power Supply (VCC) VCC Ripple Digital IO Storage Temperature MSD (MSL)

Min

Max

Unit

Vcc

-0.5 3.6

Vrpp

Vin

-0.5 Vcc +0.2 V

Tstg

-45

Level 1 Level 2 Level 3 TBD

Condition

3.2 Operation Condition

Item

Power Supply (VCC)

Vcc

Min

Typical Value

Max

3.0

3.3

3.6

Peak Current

Iccp

Tracking Average Current

IACQ

Low Level Input Voltage Vin_low

0.7

High Level Input Voltage

Vin_high 1.2

Low Level Output Voltage

Vout_low

0.4

High Level Output Voltage

Vout_high Vcc0.4

Antenna Gain

Gant

Nosie Figure

Nftot

Operation Temperature Topr

-40

Unit Condition V mA Vcc=3.0 V mA Vcc=3.0V V V

Iout=-8 mA

Iout=8 mA

dB dB

3.3 Dimensions

Table 3-1: Dimensions

Symbol A B C D E F G H K M

Min (mm) 9.6 9.55 1.9 0.55 1.0 0.5 0.3 0.9 0.6 0.7

UM220-IV M0 User Manual

Typical Value (mm) 10.1 9.7 2.0 0.65 1.1 0.6 0.4 1.0 0.7 0.8

Max (mm) 10.7 9.85 2.1 0.95 1.2 0.7 0.5 1.1 0.8 0.9

Figure 3-1 Mechanical Layout 7

3.4 Pin Definition (Top View)

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_RF3 15 NC 16 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

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

3 VCC_RF does not have short circuit detection function; 8

No Name 17 NC 18 NC

UM220-IV M0 User Manual

I/O Electrical level I/O I/O

Description Reserve Reserve

4 Hardware Design
4.1 Design in Considerations
To make UM220-IV M0 work normally, you need to properly connect the following:
The Module VCC has good monotonicity. If the VCC power off and then on, the power off time must be more than 10ms.
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.
4.2 Avoid String 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.
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 string 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.
4.3 Antenna
If UM220-IV M0 uses a +3V active antenna, it is recommended to use the VCC_RF pin output to power the antenna through a feed inductor.
RF_IN
UM220 -IV M0
VCC_RF
Figure 4-1 UM220-IV M0 Active Antenna +3V Solution
Note: If the user has a high requirement for ESD (> ±2000 V), the user should consider other method to feed the antenna rather than using the VCC_RF pin. In this case, it is recommended to choose a power supply chip with high ESD protection level. Gas discharge tube, varistor, TVS tube and other high-power protective devices may also be
10

UM220-IV M0 User Manual
used in the power supply circuit to further protect the module from ESD damage or other Electrical Over-Stress (EOS).
If the UM220-IV M0 uses an active antenna other than +3V, the bias voltage V_BIAS required by the antenna is supplied to the antenna through a feed inductor.

RF_IN

UM220 -IV M0

V_BIAS

VCC_RF

Figure 4-2 UM220-IV M0 Active Antenna (Other than +3V) Solution

If UM220-IV M0 uses a passive antenna, and the antenna is directly connected to RF_IN pin, the VCC_RF can be suspended. 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 4-3 UM220-IV M0 Passive Antenna Solution
4.4 Serial Port
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

Figure 4-4 Connect COM to PC 11

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.
12

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 13

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.
14

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
www.unicorecomm.com

References

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