UNICORECOMM UM220-IV M0 User manual

WWW.UNICORECOMM.COM
INSTALLATION AND OPERATION
USER MANUAL
Data subject to change without notice.
Communications, Inc.
UM220-IV M0
Copyright© 2009-2021, Unicore
Positioning Module
Industry Grade Multi-GNSS

i
Revision History
Version
Revision
Date
Ver.1.0.0
Primary version
Jun.2018
Ver.1.0.1
Alpha release, Revised Pin definition
Oct.2018
Ver.1.0.2
Revised module size
Dec.2018
Ver.1.0.4
Beta release, align with Chinese version 1.0.4
Aug. 2019
R1.1
Chapter 6.2: add shelf life
Sep. 2019
R1.2
Chapter 6.2: revise the MSL instructions
Add CE logo
Jan. 2020
R1.3
Add a footnote to elaborate CEP
Oct. 2020
R2
Hardware version 2.3 released, update the related
parameters
Dec. 2020
R2.1
Add the descriptions of SMT stencil
Jun. 2021
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.
© Copyright 2009-2021 Unicore Communications, Inc. All rights reserved.

UM220-IV M0 User Manual
ii
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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Contents
1INTRODUCTION ....................................... 1
1.1 OVERVIEW.........................................................................................................................1
1.2 KEY FEATURES..................................................................................................................2
1.3 INTERFACE........................................................................................................................3
2PRODUCT INSTALLATION .............................. 4
2.1 INSTALLATION PREPARATION............................................................................................4
2.2 HARDWARE INSTALLATION................................................................................................5
3TECHNICAL SPECIFICATIONS ........................... 6
3.1 ELECTRICAL SPECIFICATIONS............................................................................................6
3.2 OPERATION CONDITION.....................................................................................................6
3.3 DIMENSIONS .....................................................................................................................6
3.4 PIN DEFINITION (TOP VIEW)..............................................................................................7
4HARDWARE DESIGN ................................... 8
4.1 DESIGN IN CONSIDERATIONS .............................................................................................8
4.2 AVOID POWER CONNECTION............................................................................................10
4.3 ANTENNA........................................................................................................................10
4.4 SERIAL PORT ..................................................................................................................11
5DISASSEMBLY ....................................... 12
6PACKAGE ........................................... 12
6.1 PRODUCT LABEL DESCRIPTION........................................................................................12
6.2 PACKAGE DESCRIPTION ..................................................................................................12
7CLEAN .............................................. 14
8REFLOW SOLDERING.................................. 14

1
1Introduction
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.
Figure 1-1 UM220-IV M0 Module
Model
PN
Grade
System
Interface
Data
Updating
Rate
Industry
Automotive
GPS
BDS/GLONASS
UART1
UART2
UM220-IV M0
2310408000024
●
●
●
●
1Hz

UM220-IV M0 User Manual
2
1.2 Key Features
Power
Voltage
+2.8~3.6 VDC
Power Consumption
90mW
RF Input
Input VSWR
≤1.5
Input Impedance
50Ω
Antenna Gain
15～30dB
Physical Characters
Dimension
10.1*9.7*2.2mm
Environment
Operating Temperature
-40℃~ +85℃
Storage Temperature
-45℃~ +90℃
RoHS
Compliant
Input/output Data Interface
UART
1 UART, LVTTL. Baud rate 4800～115200bps
GNSS Performance
Frequency
BDS B1: 1561.098MHz
GPS L1: 1575.42MHz
TTFF
Cold Start: 28s
Hot Start: 1s
Reacquisition: 1s
AGNSS1: 4s
Positioning Accuracy2
2.0m (dual-system horizontal, open sky)
3.5m (dual-system vertical, open sky)
Velocity Accuracy (RMS)
0.1m/s (dual-system, Open sky)
Sensitivity
BDS
GPS
Tracking
-161dBm
-161dBm
Acquisition
-146dBm
-147dBm
Hot start
-154dBm
-155dBm
Reacquisition
-157dBm
-158dBm
1PPS Accuracy (RMS)
20ns
Data Updating Rate
1Hz
Data Output
NMEA 0183, Unicore Protocol
1
Assist date input
2
CEP, 50%

3
1.3 Interface
GNSS IC
SAW
TCXO
Battery
RTC
Crystal
RESET_N
UART
PPS
UM220-IV
M0
LNA
Figure 1-2 Structure Chart
UART
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.

UM220-IV M0 User Manual
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2Product 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.
Figure 2-1
Please check the contents of the package carefully after receiving the package of
UM220-IV M0:
UM220-IV M0 EVK suite（with AC Adapter）
UM220-IV M0 User manual.
uSTAR application package.
Antenna.
Antenna connection cable
Direct serial cable
PC
UM220-IV M0
Antenna

5
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 1：Make sure to take full anti-static measures, such as wearing an anti-static
wrist strap, grounding the workbench;
Step 2：Open the UM220-IV M0 evaluation kit;
Step 3：Select 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 4：Connect the PC to the EVK serial port through direct serial cable;
Step 5：Power the evaluation board and initialize the UM220-IV M0;
Step 6：Open the uSTAR
Step 7：Controlled the receiver through uSTAR to display constellations view, log
messages, and receiver status.

UM220-IV M0 User Manual
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3Technical Specifications
3.1 Electrical Specifications
Absolute Maximum Ratings
Item
Pin
Min
Max
Unit
Condition
Power Supply (VCC)
Vcc
-0.5
3.6
V
VCC Ripple
Vrpp
50
mV
Digital IO
Vin
-0.5
Vcc +0.2
V
Storage Temperature
Tstg
-45
90
℃
MSD (MSL)
□Level 1 □Level 2 ■Level 3 □TBD
3.2 Operation Condition
Item
Pin
Min
Typical
Value
Max
Unit
Condition
Power Supply (VCC)
Vcc
2.8
3.3
3.6
V
Peak Current
Iccp
53
mA
Vcc=3.0 V
Tracking Average
Current
IACQ
29
30
31
mA
Vcc=3.0V
Low Level Input Voltage
Vin_low
0.7
V
High Level Input
Voltage
Vin_high
1.2
V
Low Level Output
Voltage
Vout_low
0.4
V
Iout=-8 mA
High Level Output
Voltage
Vout_high
Vcc–0.4
V
Iout=8 mA
Antenna Gain
Gant
15
30
dB
Nosie Figure
Nftot
2
dB
Operation Temperature
Topr
-40
85
℃
3.3 Dimensions
Table 3-1: Dimensions
Symbol
Min (mm)
Typical Value (mm)
Max (mm)
A
9.6
10.1
10.7
B
9.55
9.7
9.85
C
1.9
2.0
2.1
D
0.55
0.65
0.95
E
1.0
1.1
1.2
F
0.5
0.6
0.7