ZOE-M8G-0 [U-BLOX]

Ultra-small u-blox M8 GNSS SiP modules;
ZOE-M8G-0
型号: ZOE-M8G-0
厂家: u-blox AG    u-blox AG
描述:

Ultra-small u-blox M8 GNSS SiP modules

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中文:  中文翻译
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ZOE-M8  
Ultra-small u-blox M8 GNSS SiP modules  
Data Sheet  
Abstract  
Technical data sheet describing the ZOE-M8 ultra-small SiP modules with superior performance.  
The modules provide a fully integrated, complete solution, reducing design and test efforts. They are  
ideal for passive antennas, due to built-in SAW and LNA and have high accuracy thanks to  
concurrent reception of up to 3 GNSS.  
www.u-blox.com  
UBX-16008094 - R08  
ZOE-M8 - Data Sheet  
Document Information  
Title  
ZOE-M8  
Subtitle  
Ultra-small u-blox M8 GNSS SiP modules  
Data Sheet  
Document type  
Document number  
Revision and date  
Document status  
UBX-16008094  
R08  
14-Aug-2019  
Production Information  
Product status  
Corresponding content status  
Objective Specification Target values. Revised and supplementary data will be published later.  
In Development /  
Prototype  
Engineering Sample Advance Information  
Data based on early testing. Revised and supplementary data will be published later.  
Data from product verification. Revised and supplementary data may be published later.  
Document contains the final product specification.  
Initial Production  
Early Production Information  
Production Information  
Mass Production /  
End of Life  
This document applies to the following products:  
Product name  
ZOE-M8G  
Type number  
ROM/FLASH version  
PCN reference  
ZOE-M8G-0-10  
ZOE-M8Q-0-10  
ROM SPG 3.01 / FLASH FW SPG 3.01  
ROM SPG 3.01 / FLASH FW SPG 3.01  
N/A  
N/A  
ZOE-M8Q  
u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this  
document. Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only  
permitted with the express written permission of u-blox.  
The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or  
implied, is given, including but not limited to, with respect to the accuracy, correctness, reliability and fitness for a particular  
purpose of the information. This document may be revised by u-blox at any time without notice. For the most recent  
documents, visit www.u-blox.com.  
Copyright © u-blox AG.  
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ZOE-M8 - Data Sheet  
Contents  
Document Information................................................................................................................................ 2  
Contents .......................................................................................................................................................... 3  
1
Functional description ......................................................................................................................... 5  
1.1 Overview........................................................................................................................................................5  
1.2 Product features .........................................................................................................................................5  
1.3 GNSS performance.....................................................................................................................................6  
1.4 Block diagram ..............................................................................................................................................7  
1.5 Supported GNSS constellations..............................................................................................................7  
1.5.1 GPS ........................................................................................................................................................7  
1.5.2 GLONASS .............................................................................................................................................8  
1.5.3 BeiDou ...................................................................................................................................................8  
1.5.4 Galileo....................................................................................................................................................8  
1.6 Assisted GNSS (A-GNSS)..........................................................................................................................8  
1.6.1 AssistNow™ Online.............................................................................................................................8  
1.6.2 AssistNow™ Offline............................................................................................................................9  
1.6.3 AssistNow™ Autonomous ................................................................................................................9  
1.7 Augmentation systems.............................................................................................................................9  
1.7.1 Satellite-Based Augmentation System (SBAS)...........................................................................9  
1.7.2 QZSS .....................................................................................................................................................9  
1.7.3 IMES ....................................................................................................................................................10  
1.7.4 Differential GPS (D-GPS).................................................................................................................10  
1.8 Broadcast navigation data and satellite signal measurements .....................................................10  
1.9 Odometer....................................................................................................................................................10  
1.10Data logging ...............................................................................................................................................10  
1.11Geofencing..................................................................................................................................................11  
1.12Message integrity protection.................................................................................................................11  
1.13Spoofing detection ...................................................................................................................................11  
1.14EXTINT: External interrupt......................................................................................................................11  
1.1.1 Pin control ..........................................................................................................................................11  
1.1.2 Aiding ..................................................................................................................................................11  
1.15TIMEPULSE................................................................................................................................................12  
1.16Protocols and interfaces .........................................................................................................................12  
1.17Interfaces....................................................................................................................................................12  
1.17.1 UART ...................................................................................................................................................12  
1.17.2 SPI ........................................................................................................................................................12  
1.17.3 Display Data Channel (DDC) ...........................................................................................................12  
1.17.4 Serial Quad Interface (SQI) .............................................................................................................13  
1.17.5 Interface selection (D_SEL) ............................................................................................................13  
1.18Configurable Input Output pins .............................................................................................................13  
1.19Safe Boot Mode .........................................................................................................................................13  
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1.20System reset..............................................................................................................................................13  
1.21Clock generation........................................................................................................................................13  
1.21.1 Oscillator.............................................................................................................................................13  
1.21.2 Real-Time Clock (RTC).....................................................................................................................14  
1.22Power management .................................................................................................................................14  
1.22.1 DC/DC converter (optional and only on ZOE-M8Q)....................................................................14  
1.22.2 Operating modes ..............................................................................................................................14  
1.23Antenna.......................................................................................................................................................15  
Pin definition ........................................................................................................................................ 16  
2.1 Pin assignment..........................................................................................................................................16  
Electrical specification ..................................................................................................................... 19  
3.1 Absolute maximum rating.......................................................................................................................19  
3.2 Operating conditions................................................................................................................................19  
3.2.1 DC electrical characteristic ............................................................................................................20  
3.2.2 Baseband parameters .....................................................................................................................20  
3.3 Indicative power requirements...............................................................................................................21  
3.4 SPI timing diagrams .................................................................................................................................21  
3.4.1 Timing recommendations...............................................................................................................22  
Mechanical specification ................................................................................................................. 23  
Reliability tests and approvals....................................................................................................... 24  
5.1 Reliability tests..........................................................................................................................................24  
5.2 Approvals....................................................................................................................................................24  
Product handling................................................................................................................................. 25  
6.1 Packaging ...................................................................................................................................................25  
6.1.1 Reels ....................................................................................................................................................25  
6.1.2 Tapes...................................................................................................................................................25  
6.2 Shipment, storage and handling ...........................................................................................................26  
6.3 Moisture sensitivity levels.......................................................................................................................26  
6.4 Reflow soldering ........................................................................................................................................26  
6.5 ESD handling precautions.......................................................................................................................26  
Default messages............................................................................................................................... 27  
Labeling and ordering information ............................................................................................... 28  
8.1 Product labeling.........................................................................................................................................28  
8.2 Explanation of product codes.................................................................................................................28  
8.3 Ordering codes...........................................................................................................................................28  
8.4 Date code and lot number .......................................................................................................................29  
8.5 Pin 1 marking .............................................................................................................................................29  
2
3
4
5
6
7
8
Related documents ................................................................................................................................... 30  
Revision history.......................................................................................................................................... 30  
Contact.......................................................................................................................................................... 31  
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ZOE-M8 - Data Sheet  
1 Functional description  
1.1 Overview  
The ZOE-M8G and ZOE-M8Q are u-blox’s super small, highly integrated GNSS SiP (System in  
Package) modules based on the high performing u-blox M8 concurrent positioning engine. The ultra-  
miniature form factor integrates a complete GNSS receiver including SAW filter, LNA and TCXO. ZOE-  
M8G is the 1.8 V variant, and ZOE-M8Q is the 3 V variant.  
ZOE-M8 SiPs are mainly targeted for applications that require a small size without compromising  
performance. For RF optimization, the ZOE-M8 SiPs integrate a front-end SAW filter and an  
additional front-end LNA for increased jamming immunity and easier antenna integration. A passive  
antenna can be used to provide a highly integrated system solution with minimal eBOM.  
Incorporating ZOE-M8 into customer designs is simple and straightforward, thanks to the fully  
integrated design, single voltage supply, low power consumption, simple interface and sophisticated  
interference suppression that ensure maximum performance even in GNSS-hostile environments.  
With its dual-frequency RF front-end, the ZOE-M8 GNSS SiPs are able to utilize concurrent reception  
of up to three GNSS systems (GPS / Galileo together with BeiDou or GLONASS). In addition, the ZOE-  
M8 SiPs provide SQI interface for optional external Flash, allowing future firmware upgrades and  
improved A-GNSS performance.  
Thanks to u-blox’s advanced algorithms and complete GNSS solution, the ZOE-M8 SiPs meet even  
the most stringent requirements in versatile industrial and consumer applications, such as UAVs,  
vehicles and assets tracking. It also supports message integrity protection, anti-jamming, and anti-  
spoofing, providing reliable positioning in difficult environmental conditions as well as in security  
attack scenarios.  
The ZOE-M8 SiPs can be easily integrated in manufacturing thanks to the advanced S-LGA (Soldered  
Land Grid Array) packaging technology, which enables easier and more reliable soldering processes  
compared to a normal LGA (Land Grid Array) package.  
The ZOE-M8 SiPs are fully tested and qualified according to the JESD47 / ISO 16750 standard.  
1.2 Product features  
Model  
Category  
GNSS  
Supply Interfaces  
Features  
Grade  
ZOE-M8G  
ZOE-M8Q  
3
3
o
o
T
T
1
1
E = External Flash required  
o = Optional, or requires external components  
C= Crystal / T = TCXO  
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1.3 GNSS performance  
Parameter  
Specification  
Receiver type  
72-channel u-blox M8 engine  
GPS L1C/A, SBAS L1C/A, QZSS L1C/A, QZSS L1 SAIF, GLONASS L1OF, BeiDou B1I, Galileo E1B/C  
Accuracy of time  
pulse signal  
RMS  
99%  
30 ns  
60 ns  
Frequency of time  
pulse signal  
0.25 Hz to10 MHz  
(configurable)  
1
Operational limits  
Dynamics  
Altitude  
Velocity  
4 g  
50,000 m  
500 m/s  
2
Velocity accuracy  
0.05 m/s  
Heading accuracy 2  
0.3 degrees  
GPS & GLONASS GPS  
GNSS  
GLONASS  
4 m  
BeiDou  
3 m  
Galileo  
TBC4  
Horizontal position  
accuracy  
2.5 m  
2.5 m  
3
Max navigation  
update rate  
ROM  
Flash  
10 Hz  
5 Hz  
18 Hz  
10 Hz  
18 Hz  
10 Hz  
18 Hz  
10 Hz  
18 Hz  
10 Hz  
5
Time-To-First-Fix  
Cold start  
Hot start  
26 s  
29 s  
30 s  
34 s  
45 s  
1 s  
1 s  
1 s  
1 s  
1 s  
6
Aided starts  
2 s  
2 s  
2 s  
3 s  
7 s  
Sensitivity7  
Tracking &  
Navigation  
–167 dBm  
–166 dBm  
–166 dBm  
–160 dBm  
–159 dBm  
Reacquisition –160 dBm  
–160 dBm  
–148 dBm  
–157 dBm  
–156 dBm  
–145 dBm  
–156 dBm  
–157 dBm  
–143 dBm  
–155 dBm  
–153 dBm  
–138 dBm  
–151 dBm  
Cold start  
Hot start  
–148 dBm  
–157 dBm  
Table 1: ZOE-M8 performance in different GNSS modes (default: concurrent reception of GPS and GLONASS)  
1
Assuming Airborne < 4 g platform  
50% @ 30 m/s  
CEP, 50%, 24 hours static, -130 dBm, > 6 SVs  
To be confirmed when Galileo reaches full operational capability  
All satellites at –130 dBm, except Galileo at –127 dBm  
Dependent on aiding data connection speed and latency  
Demonstrated with a good external LNA  
2
3
4
5
6
7
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1.4 Block diagram  
Figure 1: ZOE-M8 block diagram  
1.5 Supported GNSS constellations  
ZOE-M8 GNSS SiPs are concurrent GNSS receivers which can receive and track multiple GNSS  
systems: GPS, Galileo, GLONASS and BeiDou. Owing to the dual-frequency RF front-end architecture,  
either GLONASS or BeiDou can be processed concurrently with GPS and Galileo signals, thereby  
providing reception of three GNSS systems. By default, the M8 receivers are configured for  
concurrent GPS and GLONASS, including SBAS and QZSS reception. If power consumption is a key  
factor, then the receiver should be configured for a single GNSS operation using GPS, Galileo,  
GLONASS or BeiDou and disabling QZSS and SBAS. The ZOE-M8 SiPs can be configured to receive  
any single GNSS constellation or any one combination from the set of permissible combinations  
shown below.  
GPS  
Galileo  
GLONASS  
BeiDou  
Table 2: Permissible GNSS combinations (• = enabled)  
The augmentation systems: SBAS and QZSS can be enabled only if GPS operation is configured.  
Galileo is not enabled as the default configuration.  
1.5.1 GPS  
The ZOE-M8 positioning SiPs are designed to receive and track the L1C/A signals provided at  
1575.42 MHz by the Global Positioning System.  
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1.5.2 GLONASS  
The ZOE-M8 SiPs can receive and process the GLONASS satellite system as an alternative to the US-  
based Global Positioning System (GPS). The u-blox ZOE-M8 positioning SiPs are designed to receive  
and track the L1OF signals that GLONASS provides at 1602 MHz + k*562.5 kHz, where k is the  
satellite’s frequency channel number (k = -7, ..., 5, 6). The ability to receive and track GLONASS L1OF  
satellite signals allows the design of GLONASS receivers where required by regulations.  
To take advantage of GPS and GLONASS, dedicated hardware preparation must be made during the  
design-in phase. See the ZOE-M8 Hardware Integration Manual [1] for u-blox design  
recommendations.  
1.5.3 BeiDou  
The ZOE-M8 SiPs can receive and process the B1I signals that are broadcast at 1561.098 MHz from  
the BeiDou Navigation Satellite System. The ability to receive and track BeiDou signals in conjunction  
with another constellation results in higher coverage, improved reliability and better accuracy.  
Currently, BeiDou is not fully operational globally and provides Chinese regional coverage only. Global  
coverage is scheduled for 2020.  
1.5.4 Galileo  
The ZOE-M8 SiPs can receive and track the E1-B/C signals centered on the GPS L1 frequency band.  
GPS and Galileo signals can be processed concurrently together with either BeiDou or GLONASS  
signals, which enhances coverage, reliability and accuracy. The SAR return link message (RLM)  
parameters for both short and long versions are decoded by the receiver and made available to users  
via UBX proprietary messages.  
Galileo has been implemented according to ICD release 1.3 (December 2016). Since the Galileo  
satellite system has only recently reached Initial Services (IS) and has not yet reached Full  
Operational Capability (FOC), changes to the Galileo signal specification (OS SIS ICD) remain  
theoretically possible. u-blox therefore recommends the use of Flash memory in designs that  
utilize Galileo signals, in order to allow for a firmware update in the unlikely event of a change to  
the Galileo signal specification (OS SIS ICD).  
Galileo reception is by default disabled, but can be enabled by sending a configuration message  
(UBX-CFG-GNSS) to the receiver. See the u-blox 8 / u-blox M8 Receiver Description Including  
Protocol Specification [2] for more information.  
1.6 Assisted GNSS (A-GNSS)  
Supply of GNSS receiver assistance information, such as ephemeris, almanac, rough user position  
and time, will reduce the time to first fix significantly and improve acquisition sensitivity. All u-blox  
M8030 based products support the u-blox AssistNow Online and AssistNow Offline A-GNSS services,  
support AssistNow Autonomous, and are OMA SUPL compliant.  
1.6.1 AssistNow™ Online  
With AssistNow Online, an Internet connected host downloads assistance data from the u-blox  
AssistNow Online service to the receiver at system start-up. The Multi-GNSS Assistance (MGA)  
service is an HTTP protocol based network operator independent service.  
Supplying assistance information, such as ephemeris, almanac, a rough last position and time, can  
reduce the time to first fix significantly and improve acquisition sensitivity.  
The AssistNow Online service provides data for GPS, GLONASS, BeiDou, Galileo and QZSS  
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1.6.2 AssistNow™ Offline  
With the AssistNow Offline service, users can download long-term orbit data over the Internet at their  
convenience. The orbit data can be stored in the memory of the application processor or alternatively  
external SQI flash memory (if available). The function requires no connectivity at system start-up,  
enabling a position fix within seconds, even when no network is available. AssistNow Offline offers  
augmentation for up to 35 days.  
AssistNow Offline service provides data for GPS and GLONASS only, BeiDou and Galileo are not  
currently supported  
1.6.3 AssistNow™ Autonomous  
AssistNow Autonomous provides aiding information without the need for a host or external network  
connection. Based on previous broadcast satellite ephemeris data downloaded to and stored by the  
GNSS receiver, AssistNow Autonomous automatically generates accurate predictions of satellite  
orbital data (“AssistNow Autonomous data”) that is usable for future GNSS position fixes. The  
concept capitalizes on the periodic nature of GNSS satellites; by capturing strategic ephemeris data  
at specific times of the day.  
u-blox’s AssistNow Autonomous benefits are:  
Faster fix in situations where GNSS satellite signals are weak  
No connectivity required  
Compatible with AssistNow Online (can work stand-alone, or in tandem with AssistNow Online  
service)  
No integration effort; calculations are done in the background, transparent to the user.  
The ZOE-M8 SiPs utilizing external Flash can predict accurate satellite ephemeris for up to six  
days after initial reception. The ROM based ZOE-M8 can use only GPS satellites with a prediction  
time of up to three days.  
For more information on A-GNSS, see the u-blox 8 / u-blox M8 Receiver Description Including  
Protocol Specification [2].  
1.7 Augmentation systems  
1.7.1 Satellite-Based Augmentation System (SBAS)  
The u-blox ZOE-M8 SiPs support reception of SBAS broadcast signals. These systems supplement  
GNSS data with additional regional or wide area GPS augmentation data. The system broadcasts  
range correction and integrity information via satellite which can be used by GNSS receivers to  
improve resulting precision. SBAS satellites can be used as additional satellites for ranging  
(navigation), further enhancing availability. The following SBAS types are supported: GAGAN, WAAS,  
EGNOS and MSAS.  
For more details see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification  
[2].  
1.7.2 QZSS  
The Quasi-Zenith Satellite System (QZSS) is a regional navigation satellite system that transmits  
additional GPS L1C/A signals for the Pacific region covering Japan and Australia. The ZOE-M8 SiPs  
are able to receive and track these signals concurrently with GPS signals, resulting in better  
availability especially under challenging signal conditions, e.g. in urban canyons. The L1-SAIF signal  
provided by QZSS can be enabled for reception via a GNSS configuration message.  
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1.7.3 IMES  
The Japanese Indoor Messaging System (IMES) system is used for indoor position reporting using  
low-power transmitters which broadcast a GPS–like signal. The ZOE-M8 SiPs can be configured to  
receive and demodulate the signal to provide an in-door location estimate.  
This service is authorized and available only in Japan.  
IMES reception is disabled by default  
1.7.4 Differential GPS (D-GPS)  
u-blox ZOE-M8 SiPs support Differential-GPS (D-GPS) data according to RTCM specification 10402.3  
[4]: "RECOMMENDED STANDARDS FOR DIFFERENTIAL GNSS". The use of Differential-GPS data  
improves GPS position accuracy. The RTCM implementation supports the following RTCM 2.3  
messages:  
Message Type  
Description  
1
2
3
9
Differential GPS Corrections  
Delta Differential GPS Corrections  
GPS Reference Station Parameters  
GPS Partial Correction Set  
Table 3: Supported RTCM 2.3 messages  
RTCM corrections cannot be used together with SBAS.  
For more details, see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification  
[2].  
1.8 Broadcast navigation data and satellite signal  
measurements  
The ZOE-M8 SiPs can output all the GNSS broadcast data upon reception from tracked satellites.  
This includes all the supported GNSS signals plus the augmentation services SBAS, QZSS and IMES.  
The receiver also makes the tracked satellite signal information available, i.e. raw code phase and  
Doppler measurements, in a form aligned to the Radio Resource LCS Protocol (RRLP) [5]. For more  
details, see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2].  
1.9 Odometer  
The odometer function provides information on travelled ground distance (in meters) based on the  
position and Doppler-based velocity output from the navigation solution. For each computed distance  
since the last odometer reset, the odometer estimates a 1-sigma accuracy value. The total  
cumulative ground distance is maintained and saved in the BBR memory.  
The odometer feature is disabled by default. For more details, see the u-blox 8 / u-blox M8 Receiver  
Description Including Protocol Specification [2].  
1.10 Data logging  
A ZOE-M8 SiP can be used in data logging applications with an external SQI flash. The data logging  
feature enables continuous storage of position, velocity and time information to the SQI flash memory  
(at least 16 Mbit). The information can be downloaded from the receiver later for further analysis or  
for conversion to a mapping tool.  
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For more information, see the u-blox 8 / u-blox M8 Receiver Description Including Protocol  
Specification [2].  
1.11 Geofencing  
ZOE-M8 SiPs support up to four circular geofencing areas defined on the Earth’s surface using a 2D  
model. Geofencing is active when at least one geofence is defined; the current status can be found by  
polling the receiver. A GPIO pin can be used to indicate status, e.g. to wake up a host on activation.  
1.12 Message integrity protection  
ZOE-M8 SiPs provide a function to detect third party interference with the UBX message stream sent  
from receiver to host. The security mechanism “signs” nominated messages via a subsequent UBX  
message. This message signature is then compared with one generated by the host to determine if  
the message data has been altered. The signature algorithm seed can use one fixed secret ID-key set  
by eFuse in production and a dynamic ID-key set by the host, enabling users to detect “man-in-the-  
middle” style attacks.  
1.13 Spoofing detection  
Spoofing is a process whereby a malicious third party tries to control the reported position via a fake  
GNSS broadcast signal. This may result in the form of reporting incorrect position, velocity or time.  
To combat against this, the ZOE-M8 SiPs include spoofing detection measures to alert the host when  
signals appear to be suspicious. The receiver combines a number of checks on the received signals  
looking for inconsistencies across several parameters.  
This feature does not guarantee to detect all spoofing attacks.  
1.14 EXTINT: External interrupt  
EXTINT is an external interrupt pin with fixed input voltage thresholds with respect to VCC. It can be  
used for control of the receiver or for aiding.  
For more information about how to implement and configure these features, see the u-blox 8 / u-blox  
M8 Receiver Description including Protocol Specification [2] and the ZOE-M8 Hardware Integration  
Manual [1].  
1.1.1 Pin control  
The pin control feature allows overriding the automatic active/inactive cycle of power save mode. The  
state of the receiver can be controlled through the EXTINT pin.  
The receiver can also be forced OFF using EXTINT when power save mode is not active.  
1.1.2 Aiding  
The EXTINT pin can be used to supply time or frequency aiding data to the receiver.  
For time aiding, the time can be supplied using hardware time synchronization where an accurate time  
pulse is connected to the EXTINT pin.  
Frequency aiding can be implemented by connecting a periodic rectangular signal with a frequency up  
to 500 kHz and arbitrary duty cycle (low/high phase duration must not be shorter than 50 ns) to the  
EXTINT pin, and providing the applied frequency value to the receiver using UBX messages.  
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1.15 TIMEPULSE  
A configurable time pulse signal is available with u-blox ZOE-M8 SiPs.  
The TIMEPULSE output generates pulse trains synchronized with GPS or UTC time grid with intervals  
configurable over a wide frequency range. Thus it may be used as a low frequency time  
synchronization pulse or as a high frequency reference signal.  
By default the time pulse signal is configured to 1 pulse per second. For more information see the u-  
blox 8 / u-blox M8 Receiver Description including Protocol Specification [2].  
1.16 Protocols and interfaces  
Protocol  
NMEA  
UBX  
Type  
Input/output, ASCII, 0183, version 4.0 (configurable to V2.1, V2.3 or V4.1)  
Input/output, binary, u-blox proprietary  
RTCM  
Input, messages 1, 2, 3, 9  
Table 4: Available Protocols  
All protocols are available on UART, DDC (I2C compliant) and SPI. For the specifications of the various  
protocols, see the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2].  
1.17 Interfaces  
A number of interfaces are provided either for data communication or memory access. The embedded  
firmware uses these interfaces according to their respective protocol specifications.  
1.17.1 UART  
The ZOE-M8 SiPs make use of a UART interface, which can be used for communication to a host. It  
supports configurable baud rates. For supported transfer rates, see the u-blox 8 / u-blox M8 Receiver  
Description Including Protocol Specification [2].  
Designs must allow access to the UART and the SAFEBOOT_N pin for future service, updates and  
reconfiguration.  
1.17.2 SPI  
The SPI interface is designed to allow communication to a host CPU. The interface can be operated in  
slave mode only. The maximum transfer rate using SPI is 125 kB/s and the maximum SPI clock  
frequency is 5.5 MHz. Note that SPI is not available in the default configuration, because its pins are  
shared with the UART and DDC interfaces. The SPI interface can be enabled by connecting D_SEL to  
ground (see section 1.17.5). In this case the DDC interface for data communication is no longer  
available.  
1.17.3 Display Data Channel (DDC)  
An I2C compliant DDC interface is available for communication with an external host CPU or u-blox  
cellular module. The interface can be operated in slave mode only. The DDC protocol and electrical  
interface are fully compatible with Fast-Mode of the I2C industry standard. Since the maximum SCL  
clock frequency is 400 kHz, thus the maximum transfer rate is 400 kb/s.  
The DDC interface is I2C Fast Mode compliant. For timing parameters, consult the I2C standard.  
The maximum bit rate is 400 kb/s. The interface stretches the clock when slowed down while  
serving interrupts, so real bit rates may be slightly lower.  
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1.17.4 Serial Quad Interface (SQI)  
An SQI is available in ZOE-M8 SiPs for connecting with an optional external flash memory. The flash  
memory is required for firmware updates and for data logging. In addition, it can be used to store  
configurations and to save AssistNow Offline and AssistNow Autonomous data.  
For more information, see the ZOE-M8 Hardware Integration Manual [1].  
1.17.5 Interface selection (D_SEL)  
At startup the D_SEL pin determines which data interfaces are used for communication. If D_SEL is  
set to logical “1” or is not connected, UART and DDC become available. If D_SEL is set to logical “0”,  
i.e. connected to GND, the ZOE-M8 SiPs can communicate to a host via SPI.  
Pin #  
(D_SEL)=”1”  
(left open)  
(D_SEL)=”0”  
(connected to GND)  
J5  
J4  
B1  
A2  
UART TX  
UART RX  
DDC SCL  
DDC SDA  
SPI MISO  
SPI MOSI  
SPI CLK  
SPI CS_N  
Table 5: Data interface selection by D_SEL  
1.18 Configurable Input Output pins  
Configuration settings can be modified for several Input/Output pins with either UBX configuration  
messages or pin selection. This flexible configuration options allow the receivers to be optimally  
configured for specific applications requirements. The modified settings remain either permanent or  
effective until power-down or reset depending on the case. Customers can activate or remap the  
following pins on ZOE-M8 SiPs:  
Selection of DDC, UART TX/RX pins interface or SPI using D_SEL pin. See section 1.17.5.  
Selection of external interrupt pins. See section 1.14.  
Configuration of Timepulse. See section 1.15.  
For more information, see the ZOE-M8 Hardware Integration Manual [1].  
1.19 Safe Boot Mode  
If Pin C4 (SAFEBOOT_N) is set to logical “0” at startup, the ZOE-M8 receiver enters Safe Boot Mode.  
In this mode, the receiver does not calculate positioning data, but is in a defined state that allows such  
actions as programming the flash memory in production, or recovering a corrupted flash memory.  
For more information about Safe Boot Mode, see the ZOE-M8 Hardware Integration Manual [1].  
1.20 System reset  
The ZOE-M8 SiPs provide a RESET_N pin to reset the system and Real-Time Clock (RTC). The  
RESET_N pin should be only used in critical situations to recover the system.  
1.21 Clock generation  
1.21.1 Oscillator  
Both ZOE-M8 SiP variants have a TCXO. The TCXO allows accelerated weak signal acquisition,  
enabling faster start and reacquisition times.  
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1.21.2 Real-Time Clock (RTC)  
The use of the RTC Clock may be optionally used to maintain time in the event of power failure at VCC.  
The RTC is required for hot start, warm start, AssistNow Autonomous, AssistNow Offline and some  
Power Save Mode operations.  
The use of the RTC is optional. The time information can be generated in one of these ways:  
by connecting to an external RTC crystal (for lower battery current – default mode)  
by sharing another RTC oscillator used within the application (for lowest system costs and  
smallest size)  
If the main supply voltage fails and a battery is connected to V_BCKP, parts of the baseband section  
switch off, but the RTC still runs, providing a timing reference for the receiver. This operating mode is  
called Hardware Backup Mode, which enables all relevant data to be saved in the backup RAM to later  
allow a hot or warm start.  
See Table 12 for details of RTC voltage requirements when using an optional RTC.  
For more information about crystal operation and configuration, see the ZOE-M8 Hardware  
Integration Manual [1].  
If neither backup RAM nor RTC are used, the backup battery is not needed and V_BCKP should be  
connected to VCC.  
1.22 Power management  
u-blox ZOE-M8 SiPs offer a power-optimized architecture with built-in autonomous power saving  
functions to minimize power consumption at any given time. Furthermore, the receiver can be used in  
two operating modes: Continuous mode for best performance or Power Save Mode for optimized  
power consumption.  
1.22.1 DC/DC converter (optional and only on ZOE-M8Q)  
ZOE-M8Q has an option to make use of a high-efficient, built-in DC/DC converter to allow low power  
consumption. To use the DC/DC converter, a capacitor and an inductor must be added to connect  
V_DCDC_OUT to V_CORE.  
If the built-in DC/DC converter is not used, VCC, V_DCDC_OUT and V_CORE need to be shorted.  
For more information, see the ZOE-M8 Hardware Integration Manual [1].  
1.22.2 Operating modes  
u-blox ZOE-M8 SiPs can be configured to run in either continuous mode or a choice of power save  
mode configurations. A template of power mode settings can be used to easily select typical power  
mode setups to cover the majority of users’ requirements.  
For specific power saving applications the user has the option to fully configure via the power save  
mode configuration. More information see the section 1.22.2.2.  
The ZOE-M8 SiP power mode setup offers a choice of continuous operation and preset power save  
mode configurations.  
Continuous (default) mode for best GNSS performance vs. power consumption  
Continuous with no compromise in power consumption  
A 1Hz cyclic tracking mode for aggressive power reduction  
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Choice of 2 or 4 Hz8 cyclic tracking modes for typical wearable applications  
ON/OFF interval mode  
1.22.2.1 Continuous mode  
Continuous mode uses the acquisition engine at full performance resulting in the shortest possible  
TTFF and the highest sensitivity. It searches for all possible satellites until the Almanac is completely  
downloaded. The receiver then switches to the tracking engine to lower power consumption.  
Thus, a lower tracking current consumption level will be achieved when:  
A valid GNSS position is obtained  
The entire Almanac has been downloaded  
The Ephemeris for each satellite in view is valid  
1.22.2.2 Power save mode  
For specific power saving applications outside the typical preset power mode setups, users can  
configure a tailored power save mode.  
Power save mode provides two dedicated methods, ON/OFF and cyclic tracking, which reduce average  
current consumption in different ways to match the needs of the specific application. These  
operations can be set by using a specific UBX message.  
For ON/OFF power save operation, an RTC signal is required.  
Position accuracy in power save mode is degraded compared to continuous mode.  
For more information about power management strategies, see the u-blox 8 / u-blox M8 Receiver  
Description Including Protocol Specification [2].  
1.23 Antenna  
The ZOE-M8 SiPs are designed for use with passive9 and active10 antennas.  
Parameter  
Specification  
Antenna Type  
Passive and active antenna  
Active Antenna Recommendations Minimum gain  
Maximum gain  
10 dB (including cable loss )  
30 dB  
2 dB  
Maximum noise figure  
Table 6: Antenna recommendations and specifications for ZOE-M8 SiPs  
8
Single GNSS constellation configuration only  
For integration ZOE-M8 SiPs with Cellular products, see the ZOE-M8 Hardware Integration Manual [1].  
9
10 For information on using active antennas with ZOE-M8 SiPs, see the ZOE-M8 Hardware Integration Manual [1].  
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2 Pin definition  
2.1 Pin assignment  
This section shows the pin assignments. Most PIOs are configurable and have shared functions. Use  
special care when designing with these pins since the overall function of the device can be affected.  
The default configuration of the PIOs is listed in Table 7 below.  
For more information, see the ZOE-M8 Hardware Integration Manual [1].  
Figure 2: Pin assignment of ZOE-M8G (S-LGA51), top view  
Figure 3: Pin assignment of ZOE-M8Q (S-LGA51), top view  
For multiple function PIOs, select the specific signal by sending the specific configuration  
message.  
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Pin # SiP  
Name  
I/O  
Description  
Remark  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
A9  
B1  
B9  
C1  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
All  
GND  
Ground  
SDA / SPI CS_N I/O  
GND  
Serial interface. See section 1.17.5.  
Leave open if not used.  
Ground  
RF_IN  
I
GNSS signal input  
GND  
Ground  
Reserved  
GND  
I/O  
Reserved.  
Do not connect. Must be left open!  
Ground  
GND  
Ground  
GND  
Ground  
SCL / SPI CLK  
GND  
I
I
Serial interface. See section 1.17.5.  
Ground  
Leave open if not used.  
Leave open if not used.  
SQI_D1  
Data line 1 to external SQI flash  
memory or reserved configuration  
pin.  
C3  
C4  
All  
All  
TIMEPULSE  
O
I
Time pulse output  
Leave open if not used.  
SAFEBOOT_N  
Used for programming the SQI flash Leave open if not used.  
memory and testing purposes.  
C5  
All  
LNA_EN  
O
LNA on/off signal connected to  
internal LNA  
Leave open if not used.  
C6  
C7  
C9  
D1  
All  
All  
All  
All  
PIO15  
GND  
I/O  
Digital I/O  
Ground  
Leave open if not used.  
GND  
Ground  
SQI_D0  
I/O  
Data line 0 to external SQI flash  
memory or reserved configuration  
pin.  
Leave open if not used.  
D3  
All  
SQI_CS_N  
I/O  
I
Chip select for external SQI flash  
memory or configuration enable pin.  
Leave open if not used.  
See section1.17.5.  
D4  
D6  
D9  
E1  
All  
All  
All  
All  
D_SEL  
GND  
Interface selector  
Ground  
GND  
Ground  
SQI_CLK  
I/O  
I/O  
Clock for external SQI flash memory  
or configuration pin.  
Leave open if not used.  
Leave open if not used.  
E3  
All  
SQI_D2  
Data line 2 to external SQI flash  
memory or reserved configuration  
pin.  
E7  
E9  
F1  
F3  
All  
All  
All  
All  
GND  
Ground  
Reserved  
Reserved  
SQI_D3  
I/O  
I/O  
I/O  
Reserved  
Reserved  
Do not connect. Must be left open!  
Do not connect. Must be left open!  
Leave open if not used.  
Data line 3 to external SQI flash  
memory or reserved configuration  
pin.  
F4  
F6  
F7  
F9  
G1  
All  
Reserved  
PIO14  
GND  
I/O  
I/O  
Reserved  
Do not connect. Must be left open!  
Leave open if not used.  
All  
Digital I/O  
All  
Ground  
All  
Reserved  
VCC  
I/O  
Reserved  
Do not connect. Must be left open!  
Clean and stable supply needed  
Connect to VCC if DCDC not used  
ZOE-M8G  
ZOE-M8Q  
All  
I
I
Supply voltage  
Core Supply voltage  
Ground  
V_CORE  
GND  
G3  
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Pin # SiP  
Name  
I/O  
I
Description  
External interrupt  
Reserved  
Remark  
G4  
G5  
G6  
G7  
G9  
All  
All  
All  
All  
All  
PIO13 / EXTINT  
Reserved  
GND  
Leave open if not used.  
I/O  
Do not connect. Must be left open!  
Ground  
GND  
Ground  
Reserved  
I/O  
Reserved  
Do not connect. Must be left open!  
Only exception is V_BCKP, which can  
be connected to this pin if not used.  
H1  
ZOE-M8G  
ZOE-M8Q  
VCC  
I
Supply voltage  
Clean and stable supply needed  
Connect to VCC if DCDC not used  
V_DCDC_OUT  
O
DCDC converter output  
H9  
J1  
J2  
J3  
J4  
J5  
J6  
J7  
All  
All  
All  
All  
All  
All  
All  
All  
V_BCKP  
VCC  
I
I
I
Backup supply  
Supply voltage  
Clean and stable supply needed  
Clean and stable supply needed  
VCC  
Supply voltage  
GND  
Ground  
RXD/SPI MOSI  
TXD/SPI MISO  
RESET_N  
RTC_I  
I
Serial interface. See section 1.17.5.  
Serial interface. See section 1.17.5.  
System reset. See section 1.20.  
RTC Input  
Leave open if not used.  
Leave open if not used.  
Leave open if not used.  
O
I
I
Connect to GND if no RTC Crystal  
attached.  
J8  
All  
RTC_O  
O
RTC Output  
Ground  
Leave open if no RTC Crystal  
attached.  
J9  
All  
GND  
Table 7: ZOE-M8 pinout  
For more information about the pinouts, see the ZOE-M8 Hardware Integration Manual [1].  
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3 Electrical specification  
The limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134).  
These are stress ratings only, and operation of the device at these or at any other conditions above  
those given in the Characteristics sections of the specification is not implied. Exposure to limiting  
values for extended periods may affect device reliability.  
Where application information is given, it is advisory only and does not form part of the  
specification. For more information regarding power management, see the ZOE-M8 Hardware  
Integration Manual [1].  
3.1 Absolute maximum rating  
Symbol  
SiP  
Parameter  
Min  
–0.5  
–0.5  
–0.5  
–0.5  
–0.5  
–0.5  
Max  
3.6  
3.6  
3.6  
3.6  
1.6  
Unit  
V
VCC  
All  
Supply voltage  
V_CORE  
ZOE-M8Q  
Core supply voltage  
V
V_DCDC_OUT ZOE-M8Q  
Output voltage of the internal DC/DC converter  
Supply voltage baseband backup core  
Input voltage on RTC_I  
V
V_BCKP  
ViRTC  
All  
All  
All  
V
V
ViDIG  
Input voltage on Configurable Inputs , RESET_N if VCC < 3.1 V  
Input voltage on Configurable Inputs , RESET_N if VCC > 3.1 V  
VCC+0.5  
3.6  
V
V
Prfin  
All  
All  
All  
All  
RF Input power on RF_IN inband11  
RF Input power on RF_IN outband12  
Total power dissipation  
0
dBm  
dBm  
mW  
°C  
+15  
500  
+85  
Ptot  
Ts  
Storage temperature  
–40  
Table 8: Absolute maximum ratings  
Stressing the device beyond the “Absolute Maximum Ratings” may cause permanent damage.  
These are stress ratings only. The product is not protected against overvoltage or reversed  
voltages. If necessary, voltage spikes exceeding the power supply voltage specification, given in  
table above, must be limited to values within the specified boundaries by using appropriate  
protection diodes.  
3.2 Operating conditions  
The test conditions specified in Table 9 apply to all characteristics defined in this section.  
Symbol Parameter  
SiP  
Min  
Typical  
+25  
0
Max Unit Remarks  
Tamb  
GND  
VCC  
Ambient temperature  
Ground  
All  
-40  
+85  
°C  
V
All  
Supply voltage  
Supply voltage  
ZOE-M8G  
ZOE-M8Q  
ZOE-M8Q  
All  
1.8  
V
3.0  
V
V_CORE Core supply voltage  
3.0  
V
V_BCKP Backup battery supply voltage  
1.8  
V
NFtot  
Receiver Chain Noise Figure  
All  
2.5  
dB  
Table 9: Test conditions  
11 Inband = 1525-1650 MHz  
12 Outband = 777-915 MHz, 1710-2200 MHz  
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All specifications are at an ambient temperature of 25°C. Extreme operating temperatures can  
significantly impact specification values. Applications operating near the temperature limits  
should be tested to ensure the specification.  
3.2.1 DC electrical characteristic  
For Power Management Unit (PMU) block diagrams, see the ZOE-M8 Hardware Integration  
Manual [1].  
Symbol  
Parameter  
SiP  
Min  
1.4  
Typ.  
Max  
3.6  
Unit  
V
V_BCKP Input voltage for backup supply  
V_CORE Core supply voltage  
All  
ZOE-M8Q  
ZOE-M8G  
ZOE-M8Q  
1.4  
3.6  
V
VCC13  
Supply voltage  
Supply voltage  
1.71  
2.7  
1.89  
3.6  
V
V
Table 10: Power supply pins  
Symbol  
Ileak  
Vil  
Parameter  
Condition  
Iol = 4 mA  
Ioh = 4 mA  
Min  
Typ.  
Max  
Unit  
nA  
V
Leakage current input pins  
Low level input voltage  
High level input voltage  
Low level output voltage  
for TXD/SPI MISO, RXD/SPI MOSI , SDA/SPI CS_N,  
SCL/SPI CLK  
, D_SEL, TIMEPULSE, PIO13/EXTINT, PIO14, PIO15,  
LNA_EN  
< 1  
0
0.2*VCC  
VCC+0.5  
0.4  
Vih  
0.7*VCC  
V
Vol  
V
Voh  
High level output voltage  
VCC-0.4  
V
for TXD/SPI MISO, RXD/SPI MOSI , SDA/SPI CS_N,  
SCL/SPI CLK , D_SEL, TIMEPULSE, PIO13/EXTINT,  
PIO14, PIO15, LNA_EN  
Rpu  
Rpu  
Pull-up resistor for SDA/SPI CS_N, SCL/SPI CLK ,  
TIMEPULSE, PIO13/EXTINT, PIO14, RESET_N  
11  
kΩ  
kΩ  
Pull-up resistor for TXD/SPI MISO, RXD/SPI MOSI,  
PIO15, D_SEL  
115  
Table 11: Digital I/O pins  
3.2.2 Baseband parameters  
Symbol  
Parameter  
SiP  
Condition  
Min.  
Typ.  
Max.  
Unit  
RTC_Fxtal  
RTC crystal resonant  
frequency  
All  
32768  
Hz  
RTC_T_start RTC startup time  
All  
All  
0.2  
50  
0.35  
0.9  
sec  
RTC_Amp  
RTC_ESR  
RTC_CL  
32768 Hz OSC oscillation  
amplitude  
350  
mVpp  
32768 Hz Xtal equivalent  
series resistance  
All  
100  
12  
kΩ  
pF  
%
RTC integrated load  
capacitance  
All  
4
7
ESR = 80 kΩ  
DCDC_eff  
DC/DC efficiency  
ZOE-M8Q  
3.3 V @ input, 4 mA – 80  
85  
mA, External components:  
L = 2.2 µH, C = 4.7 µF  
V_DCDC_out DC/DC output voltage  
ZOE-M8Q  
DC/DC enabled  
1.4  
V
Table 12: Baseband parameters  
13 Max 50 mVpp ripple  
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3.3 Indicative power requirements  
Table 13 lists examples of the total system supply current for a possible application.  
The values in Table 13 are provided for customer information only as an example of typical current  
requirements. The values are characterized on samples; actual power requirements can vary  
depending on firmware version used, external circuitry, number of SVs tracked, signal strength,  
type of start as well as time, duration and conditions of test.  
Parameter  
Symbol  
SiP  
Typ  
Typ  
GPS / QZSS  
/ SBAS  
Max Units  
Condition  
GPS &  
GLONASS  
14  
Max. supply current  
Iccp  
All  
67  
mA  
mA  
mA  
Average supply  
current 15  
Icc Acquisition16  
ZOE-M8G 45  
ZOE-M8Q 28  
34.5  
22  
Estimated at 1.8 V  
Estimated at 3 V w/  
DC/DC  
ZOE-M8Q 45  
34.5  
mA  
Estimated at 3 V w/o  
DC/DC  
Icc Tracking  
(Continuous mode)  
ZOE-M8G 40  
ZOE-M8Q 25  
32.5  
21  
mA  
mA  
Estimated at 1.8 V  
Estimated at 3 V w/  
DC/DC  
ZOE-M8Q 40  
32.5  
mA  
Estimated at 3 V w/o  
DC/DC  
Icc Tracking  
(Power Save mode / 1 Hz)  
ZOE-M8G 12.5  
ZOE-M8Q 9.0  
11.5  
8.5  
mA  
mA  
Estimated at 1.8 V  
Estimated at 3 V w/  
DC/DC  
ZOE-M8Q 12.5  
11.5  
mA  
µA  
Estimated at 3 V w/o  
DC/DC  
Backup battery  
current  
I_BCKP  
All  
All  
15  
20  
HW Backup mode,  
VCC = 0 V, V_BCKP = 3 V  
using the RTC crystal  
17  
SW Backup current  
I_SWBCKP  
µA  
SW Backup mode,  
VCC = 1.8 V (ZOE-M8G)  
VCC = 3.0 V (ZOE-M8Q)  
using the RTC crystal  
Table 13: Currents to calculate the indicative power requirements  
For more information about power requirements, see the ZOE-M8 Hardware Integration Manual [1].  
All values in Table 13 are measured at +25 °C ambient temperature.  
3.4 SPI timing diagrams  
In order to avoid incorrect operation of the SPI, the user needs to comply with certain timing  
conditions. The following signals need to be considered for timing constraints:  
Symbol  
Description  
SPI CS_N (SS_N)  
SPI CLK (SCK)  
Slave select signal  
Slave clock signal  
Table 14: Symbol description  
14  
Use this figure to dimension maximum current capability of power supply. Measurement of this parameter with 1 Hz  
bandwidth.  
15 Simulated constellation of 8 satellites is used. All signals are at -130 dBm.  
16 Average current from start-up until the first fix.  
17  
Use this figure to determine required battery capacity.  
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Figure 4: SPI timing diagram  
3.4.1 Timing recommendations  
The recommendations below are based on a firmware running from SQI flash memory.  
Parameter  
Description  
Recommendation  
tINIT  
Minimum Initialization Time  
10 us  
tDES  
tbit  
Deselect Time  
1 ms  
Minimum bit time  
Minimum byte period  
180 ns (5.5 MHz max bit frequency)  
8 µs (125 kHz max byte frequency)  
tbyte  
Table 15: SPI timing recommendations  
The values in the above table result from the requirement of an error-free transmission. By  
allowing just a few errors and disabling the glitch filter, the bit rate can be increased considerably.  
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4 Mechanical specification  
Figure 5: Mechanical drawing for ZOE-M8 (S-LGA), bottom view  
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5 Reliability tests and approvals  
5.1 Reliability tests  
ZOE-M8 SiPs are based on AEC-Q100 qualified GNSS chips.  
Qualification requirements are according to JEDEC standards JESD47 “Stress-Test-Driven  
Qualification of Integrated Circuits" and ISO 16750 "Road vehicles – environmental conditions and  
testing for electrical and electronic equipment”.  
5.2 Approvals  
The ZOE-M8G and ZOE-M8Q SiPs comply with the Directives 2011/65/EU and  
2015/863/EU of the European Parliament and the Council on the Restriction of  
Use of certain Hazardous Substances (RoHS).  
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ZOE-M8 - Data Sheet  
6 Product handling  
6.1 Packaging  
ZOE-M8 SiPs are delivered as hermetically sealed, reeled tapes in order to enable efficient production  
lot set-up and tear-down. For more information about packaging, see the u-blox Package Information  
Guide [3].  
6.1.1 Reels  
ZOE-M8 SiPs are deliverable in quantities of 1000 pieces on a reel. The ZOE-M8 SiPs are shipped on  
Reel Type D, as described in the u-blox Package Information Guide [3].  
6.1.2 Tapes  
Figure 6 shows the feed direction and the orientation of the ZOE-M8 positioning SiPs on the tape. The  
positioning SiPs are placed such that the pin 1 is at the upper right for the S-LGA51 (Soldered LGA).  
The dimensions of the tapes are specified in Figure 6.  
Figure 6: Dimensions and orientation for ZOE-M8 SiPs on the tape  
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ZOE-M8 - Data Sheet  
6.2 Shipment, storage and handling  
The absolute maximum rating of the storage temperature specified in the section 3.1 applies to the  
storage of the SiP both before and after soldering. Required storage conditions for SiPs in reeled tapes  
and for naked SiPs before soldering, other important information regarding shipment, storage and  
handling are described in the u-blox Package Information Guide [3].  
6.3 Moisture sensitivity levels  
The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions required.  
ZOE-M8 SiPs are rated at MSL level 3.  
For MSL standards, see IPC/JEDEC J-STD-020, which can be downloaded from www.jedec.org.  
For more information regarding MSL, see the u-blox Package Information Guide [3].  
6.4 Reflow soldering  
Reflow profiles are to be selected according u-blox recommendations (see the ZOE-M8 Hardware  
Integration Manual [1] for additional information).  
6.5 ESD handling precautions  
ZOE-M8 positioning SiPs contain highly sensitive electronic circuitry and are Electrostatic  
Sensitive Devices (ESD). Observe precautions for handling! Failure to observe these precautions  
can result in severe damage to the GNSS receiver!  
GNSS receivers are Electrostatic Sensitive Devices (ESD) and require special precautions when  
handling. Particular care must be exercised when handling patch antennas, due to the risk of  
electrostatic charges. In addition to standard ESD safety practices, the following measures should be  
taken into account whenever handling the receiver:  
Unless there is a galvanic coupling between the local GND (i.e.  
the work table) and the PCB GND, the first point of contact  
when handling the PCB must always be between the local GND  
and PCB GND.  
Before mounting an antenna patch, connect ground of the  
device  
When handling the RF pin, do not come into contact with any  
charged capacitors and be careful when contacting materials  
that can develop charges (e.g. patch antenna ~10 pF, coax  
cable ~50-80 pF/m, soldering iron, …)  
To prevent electrostatic discharge through the RF input, do not  
touch any exposed antenna area. If there is any risk that such  
exposed antenna area is touched in non ESD protected work  
area, implement proper ESD protection measures in the design.  
When soldering RF connectors and patch antennas to the  
receiver’s RF pin, make sure to use an ESD safe soldering iron  
(tip).  
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ZOE-M8 - Data Sheet  
7 Default messages  
Interface  
Settings  
UART Output  
9600 Baud, 8 bits, no parity bit, 1 stop bit  
Configured to transmit both NMEA and UBX protocols, but only the following NMEA (no UBX)  
messages have been activated at start-up:  
GGA, GLL, GSA, GSV, RMC, VTG, TXT  
UART Input  
DDC  
9600 Baud, 8 bits, no parity bit, 1 stop bit, Autobauding disabled  
Automatically accepts following protocols without need of explicit configuration:  
UBX, NMEA, RTCM  
The GNSS receiver supports interleaved UBX and NMEA messages.  
Fully compatible with the I2C industry standard, available for communication with an external  
host CPU or u-blox cellular modules, operated in slave mode only. Default messages activated.  
NMEA and UBX are enabled as input messages, only NMEA as output messages.  
Maximum bit rate 400 kb/s.  
SPI  
Allow communication to a host CPU, operated in slave mode only. Default messages activated.  
SPI is not available in the default configuration.  
TIMEPULSE  
( 1 Hz Nav)  
1 pulse per second, synchronized at rising edge, pulse length 100 ms  
Table 16: Default messages  
Please refer to the u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification [2]  
for information about further settings.  
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ZOE-M8 - Data Sheet  
8 Labeling and ordering information  
8.1 Product labeling  
The labeling of u-blox M8 GNSS products includes important product information. The location of  
the ZOE-M8 product type number is shown in Figure 7.  
010  
ZOEM8G  
Stands for product type number: ZOE-  
M8G-0-10  
Figure 7: Description of ZOE-M8 product label (top view)  
8.2 Explanation of product codes  
Three different product code formats are used. The Product Name is used in documentation such as  
this data sheet and identifies all u-blox M8 products, independent of packaging and quality grade. The  
Ordering Code includes packaging and quality, while the Type Number includes the hardware and  
firmware versions. Table 17 below details these three different formats:  
Format  
Structure  
Product Name  
Ordering Code  
Type Number  
PPP-TGV  
PPP-TGV-N  
PPP-TGV-N-XX  
Table 17: Product code formats  
The parts of the product code are explained in Table 18.  
Code Meaning  
Example  
ZOE  
PPP  
TG  
V
Product Family  
Technology & Generation M8 = u-blox M8  
Variant  
Function set (A-Z)  
N
Option/ Quality Grade  
Product Detail  
Describes standardized functional element or quality grade; 0 = Default variant  
Describes product details or options such as hardware and software revision, cable length  
XX  
Table 18: Part identification code  
8.3 Ordering codes  
Ordering No.  
ZOE-M8G-0  
ZOE-M8Q-0  
Product  
u-blox M8 concurrent GNSS S-LGA 1.8 V SiP, TCXO, ROM, 4.5x4.5 mm, 1000 pcs/reel  
u-blox M8 concurrent GNSS S-LGA 3.0 V SiP, TCXO, ROM, 4.5x4.5 mm, 1000 pcs/reel  
Table 19: Product ordering codes for professional grade positioning SiPs  
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ZOE-M8 - Data Sheet  
8.4 Date code and lot number  
The eight-digit Date Code and Lot Number includes the production date and lot number information.  
Date Code and Lot Number  
Meaning  
YWWLLXXX  
Y = production year, A = 2017, B = 2018, C = 2019 etc.  
WW = calendar week  
LL = lot number  
XXX = other production information  
Table 20: Production date and lot number information  
8.5 Pin 1 marking  
The pin 1 marking is located on the top left corner.  
The pin 1 marking shown in Figure 7 has changed. The change is effective from production date  
code and lot number C0501XXX (ZOE-M8G) and B5101XXX (ZOE-M8Q) onward.  
Product changes affecting form, fit or function are documented by u-blox. For a list of Product  
Change Notifications (PCNs) see our website at: http://www.u-blox.com/en/notifications.html.  
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ZOE-M8 - Data Sheet  
Related documents  
[1] ZOE-M8 Hardware Integration Manual, Doc. No. UBX-16030136  
[2] u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification (public version), Doc.  
No. UBX 13003221  
[3] u-blox Package Information Guide, Doc. No. UBX-14001652  
[4] RTCM 10402.3 Recommended Standards for Differential GNSS, Ver. 2.3, RTCM AUG. 20,  
2001  
[5] Radio Resource LCS Protocol (RRLP), (3GPP TS 44.031 version 11.0.0 Release 11)  
For regular updates to u-blox documentation and to receive product change notifications, register  
on our homepage (www.u-blox.com).  
Revision history  
Revision  
Date  
Name  
Comments  
R01  
08-Dec-2016  
jhak  
Objective Specification  
Updated section 1.5.4 (Galileo statement) and section 5 (qualification  
standard), updated Table 8 (VCC Max. rating), Figure 5 (mechanical  
specifications), Table 13 (average supply currents for GSP/QZSS/SBAS  
mode) and Figure 7 (product label description), added section 6.2 Shipment,  
storage and handling.  
R02  
16-Jan-2017  
jhak  
Advance Information. Updated mechanical drawing and dimensions (Figure  
5), changed SW Backup current in Table 13 from 30 µA to 20 µA.  
R03  
R04  
21-Mar-2017 mdur  
Added ZOE-M8Q variant. Updated power requirements (Table 13), product  
label information (Figure 7), and added tape dimensions and orientation  
information (Figure 6).  
11-Jul-2017  
13-Sep-2017  
mdur  
mdur  
Updated mechanical drawing, product tape and label information (Figure 5,  
Figure 6 and Figure 7), remark modified for G9 pin in Table 7, parameter  
modified for ViDIG in Table 8.  
R05  
Early Production Information. Modified highlights on page 1, Modified  
overview description (section 1.1), added a note about degraded position  
accuracy in power save mode (section 1.22.2.2),  
R06  
R07  
23-Oct-2017  
12-Dec-2017  
mdur  
mdur  
Production Information. Corrected the statement about compatibility of  
AssistNow Autonomous in section 1.6.3.  
Added RoHS Directive 2015/863/EU in section 5.2. Modified description of  
DCDC converter in section 1.22.1. Modified pin 1 marker in Figure 7:  
Description of ZOE-M8 product label (top view). Added Sections 8.4 (Date  
code and lot number) and 8.5 (Pin 1 marking).  
R08  
14-Aug-2019 mdur  
UBX-16008094 - R08  
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Page 30 of 31  
 
 
 
 
 
 
 
ZOE-M8 - Data Sheet  
Contact  
For complete contact information, visit us at www.u-blox.com.  
u-blox Offices  
North, Central and South America  
u-blox America, Inc.  
Headquarters  
Europe, Middle East, Africa  
Asia, Australia, Pacific  
u-blox Singapore Pte. Ltd.  
u-blox AG  
Phone: +1 703 483 3180  
Phone: +65 6734 3811  
E-mail: info_us@u-blox.com  
Phone: +41 44 722 74 44  
E-mail: info@u-blox.com  
Support: support@u-blox.com  
E-mail: info_ap@u-blox.com  
Support: support_ap@u-blox.com  
Regional Office West Coast:  
Regional Office Australia:  
Phone: +1 408 573 3640  
E-mail: info_us@u-blox.com  
Phone: +61 2 8448 2016  
E-mail: info_anz@u-blox.com  
Support: support_ap@u-blox.com  
Technical Support:  
Phone: +1 703 483 3185  
E-mail: support@u-blox.com  
Regional Office China (Beijing):  
Phone: +86 10 68 133 545  
E-mail: info_cn@u-blox.com  
Support: support_cn@u-blox.com  
Regional Office China (Chongqing):  
Phone: +86 23 6815 1588  
E-mail: info_cn@u-blox.com  
Support: support_cn@u-blox.com  
Regional Office China (Shanghai):  
Phone: +86 21 6090 4832  
E-mail: info_cn@u-blox.com  
Support: support_cn@u-blox.com  
Regional Office China (Shenzhen):  
Phone: +86 755 8627 1083  
E-mail: info_cn@u-blox.com  
Support: support_cn@u-blox.com  
Regional Office India:  
Phone: +91 80 405 092 00  
E-mail: info_in@u-blox.com  
Support: support_in@u-blox.com  
Regional Office Japan (Osaka):  
Phone: +81 6 6941 3660  
E-mail: info_jp@u-blox.com  
Support: support_jp@u-blox.com  
Regional Office Japan (Tokyo):  
Phone: +81 3 5775 3850  
E-mail: info_jp@u-blox.com  
Support: support_jp@u-blox.com  
Regional Office Korea:  
Phone: +82 2 542 0861  
E-mail: info_kr@u-blox.com  
Support: support_kr@u-blox.com  
Regional Office Taiwan:  
Phone: +886 2 2657 1090  
E-mail: info_tw@u-blox.com  
Support: support_tw@u-blox.com  
UBX-16008094 - R08  
Production Information  
Contact  
Page 31 of 31  
 

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