This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
November 2018 DS12821 Rev 1 1/29
Teseo-LIV3R
Tiny ROM GNSS module
Datasheet - preliminary data
Features
Simultaneous multi-constellation
-163 dBm tracking sensitivity
1.5 m CEP position accuracy
2.1 V to 4.3 V supply voltage range
Tiny LCC 18 pin package (9.7x10.1)
Operating temperature (-40 °C, 85 °C)
17 µW standby current and 70 mW tracking
power consumption
Description
The Teseo-LIV3R module is an easy to use
Global Navigation Satellite System (GNSS)
standalone module, embedding Teseo III single
die standalone positioning receiver IC working
simultaneously on multiple constellations
(GPS/Glonass/BeiDou/QZSS).
The Teseo-LIV3R modules bring the proven
accuracy and robustness of Teseo chips to the
reach of everyone. The certified module with
optimized RF, embedded firmware and the
complete evaluation environment save
development time, while the compactness and
cost-effectiveness of this solution make it ideal for
many, especially IoT applications, such as
insurance, goods tracking, drones, tolling, anti-
theft systems, people and pet location, vehicle
tracking, emergency calls, fleet management,
vehicle sharing, diagnostics and public
transportation.
Within its 9.7x10.1 mm tiny size, Teseo-LIV3R is
offering superior accuracy thanks to the on board
26 MHz Temperature Compensated Crystal
Oscillator (TCXO) and a reduced Time To First Fix
(TTFF) relying on its dedicated 32 KHz Real Time
Clock (RTC) oscillator.
Teseo-LIV3R also provides server based Real
Time Assisted GNSS.
Teseo-LIV3R module, being a certified solution,
optimizes the time to market of the final
applications with a temperature operating range
from -40 °C to 85 °C.
Table 1. Device summary
Order code Marking Temperature range
[°C]Package Packaging
Teseo-LIV3R Teseo-LIV3R -40 °C, 85 °C LCC-18
(9.7 mm x 10.1 mm) Tape and reel
www.st.com
Contents Teseo-LIV3R
2/29 DS12821 Rev 1
Contents
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 GNSS performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Pin out description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Supported GNSS constellations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 GLONASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 BeiDou . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Augmentation systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Satellite-Based augmentation system . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.2 QZSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Differential GPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Assisted GNSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 RealTime AGNSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5 Clock generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.1 Temperature-Compensated Crystal Oscillator (TCXO) . . . . . . . . . . . . . . 12
5.2 Real Time Clock (RTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 I/O interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1 UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.2 I2C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 FW configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8 Power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.1 Hardware standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.2 Software standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DS12821 Rev 1 3/29
Teseo-LIV3R Contents
3
9 Geofencing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
10 Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
11 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.2 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.3 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.5 Recommended DC operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . 19
12 Mechanical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
13 Shipping information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
13.1 Reels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
13.2 Packing cartons for reels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
13.3 ESD handling precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
13.4 Moisture sensitivity levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
14 Labeling information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
15 Reflow soldering profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
16 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Appendix A Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Description Teseo-LIV3R
4/29 DS12821 Rev 1
1 Description
1.1 GNSS performance
Receiver specification are the following:
GPS L1C/A
SBAS L1C/A
QZSS L1C/A
GLONASS L1OF
BeiDou B1
Table 1. GNSS performance
Parameter GNSS GPS &
GLONASS GPS & BeiDou Unit
Time To First Fix (1)
1. All satellites at -130 dBm - TTFF at 50%.
Cold start Warm start <32
<25
<36
<29 s
Hot start <1.5 <2.5
Sensitivity(2),(3),(4)
2. Demonstrated with a good external LNA.
Tracking -163 -163
dBm
Navigation(5) -158 -158
Reacquisition(6),(7) -156 -156
Cold start -147 -147
Warm start -148 -148
Hot start -154 -151
Max fix rate — 10 10 Hz
Velocity accuracy(8) —0.01—m/s
Velocity accuracy(9) — 0.1 — m/s
Heading accuracy(8) —0.01—°
Heading accuracy(9) —2.3—°
Horizontal position
accuracy(10)
Autonomous <1.8(10) <1.5(10)
mSBAS <1.5(10) —
Accuracy of time pulse RMS 99% — —
Frequency of time pulse — — — —
Operational limits(11)
Dynamic(12) <4.5g <4g —
Altitude 100000 100000 m
Velocity 600 600 m/s
Operational ITAR limits(13) Altitude 18000 18000 m
Velocity 515 515 m/s
DS12821 Rev 1 5/29
Teseo-LIV3R Description
27
1.2 Block diagram
Figure 1. Teseo-LIV3R block schematic
3. For hot start, all sats have the same signal level except one (pilot sat at -145 dBm).
4. For BEIDOU tracking sensitivity refers to MEO sats. For GEO the tracking sensitivity is -151 dBm
5. Configurable Value.
6. All satellites at same signal level.
7. Minimum level to get valid fix after reacquisition.
8. 50% at 30 m/s - linear path.
9. 50% at 0.5 g - shape path.
10. CEP 50%, 24h static, Roof Antenna.
11. Verified the limit checking the fix availability.
12. Special configuration for high dynamic scenario.
13. To be compliant with USA International Traffic in Arms Regulations (ITAR), when both the ITAR altitude
limit and the ITAR velocity limit are overpass taken the Teseo-LIV3R stops providing NMEA stream.
Description Teseo-LIV3R
6/29 DS12821 Rev 1
1.3 Pin configuration
Figure 2. Teseo-LIV3R pin layout
1.4 Pin out description
Table 2. Teseo-LIV3R pin out description
No Name I/O Description
1 GND Ground Ground
2 TX O Serial Port Tx (if not used, must be left floating)
3 RX I Serial Port Rx
4 1PPS O Time pulse (1PPS) (if not used, must be left floating)
5 Wake-Up I External Interrupt Pin (if not used, must be left floating)
6 Vbatt I Backup voltage supply
7 VCC_IO I IO Supply Voltage (3.3 V)
8 VCC I Supply voltage (from 2.1 V to 4.2 V)
9 SYS_RSTn I RESET_N (if not used, must be left floating)
10 GND_RF I Ground
11 RF_IN I GNSS signal Input
12 GND_RF Ground Ground
13 Ant_OFF O External Antenna Control (if not used, must be left
floating)
14 VCC_RF O
Output Voltage RF section (if not used, must be left
floating)
Note: Can be used to supply external active antenna
15 Reserved I Reserved (must be left floating)
16 SDA I/O I2C Data (if not used, must be left floating)
Supported GNSS constellations Teseo-LIV3R
8/29 DS12821 Rev 1
2 Supported GNSS constellations
The embedded FW supports the following GNSS constellations (GPS, GLONASS, BEIDOU
and QZSS). The user can select what the application needs by FW configuration.
GPS+GLONASS are selected by default.
2.1 GPS
The Teseo-LIV3R GNSS module is designed to receive and to track the L1C/A signals
provided at 1575.42 MHz by the Global Positioning System (GPS). The Teseo-LIV3R can
receive and process GPS concurrently with GLONASS or BeiDou (the last two are mutually
exclusive).
2.2 GLONASS
The Teseo-LIV3R module can receive and process GLONASS concurrently with GPS. The
Russian GLONASS satellite system (ГЛОНАСС; GLObal NAvigation Satellite System) is an
alternative to US’s GPS.
2.3 BeiDou
The Teseo-LIV3R module can receive and process BeiDou concurrently with GPS. B1
signals provided at 1561.098 MHz by the BeiDou Navigation Satellite System can be
tracked by Teseo-LIV3R positioning modules. The ability to receive and track BeiDou B1
satellite signals in conjunction with GPS results in higher coverage, improved reliability and
better accuracy especially in the difficult urban environment of the big far east cities like
Shanghai, Taipei, and Singapore.
DS12821 Rev 1 9/29
Teseo-LIV3R Augmentation systems
27
3 Augmentation systems
3.1 Satellite-Based augmentation system
Teseo-LIV3R supports SBAS. SBAS is a Wide Area Differential GPS (WADGPS). It is a
system which provides differential GPS corrections data; SBAS includes the WAAS within
the United States, the EGNOS within Europe, the Multifunctional Transport Satellite
(MTSAT)–based MSAS within Japan and Southeast Asia, and the GPS and GEO
Augmented Navigation (GAGAN) system in India.
SBAS data correction is used in the GNSS algorithm to provide better position estimation.
The overall SBAS differential correction mechanism can be conceived and built in 2 phases:
The “Acquire and Tracking” phase
The “Decoding” phase
The “Acquire and Track” phase relates to the capacity of the acquisition engine to reliably
track the configured SBAS satellite; during decoding phase the SBAS message can be
decoded to fetch the differential corrections.
The current longitude limits for each service are:
WAAS -180 to -25 degrees
EGNOS -25 degrees to +50 degrees
GAGAN +50 degrees to +100 degrees
MSAS +100 degrees to +180 degrees
The Teseo-LIV3R software with SBAS capability implements a command interface at the
NMEA level to allow interaction with the SBAS library. It supports commands to
enable/disable the SBAS functionality.
3.2 QZSS
The Quasi-Zenith Satellite System (QZSS) is a Japanese regional communication service
and positioning information for the mobile environment in the GPS L1C/A band. QZSS in
conjunction with GPS signals provides GNSS augmentation service for the Pacific region
covering Japan and Australia. QZSS satellites are placed in a periodic Highly Elliptical Orbit
(HEO): these orbits allow the satellites to “dwell” for more than 12 hours a day at an
elevation above 70° (it means that they appear almost overhead most of the time).
3.3 Differential GPS
Teseo-LIV3R supports Differential-GPS data according to RTCM (Radio Technical
Commission for Maritime Services) 2.3.
Differential-GPS data improves position accuracy.
Teseo-LIV3R supports the following RTCM messages.
DS12821 Rev 1 11/29
Teseo-LIV3R Assisted GNSS
27
4 Assisted GNSS
GNSS receivers need accurate satellite position data from at least four satellites to produce
a fix.
Accurate satellite data -ephemeris data- is valid for 4 hours only for GPS and 30 minutes
only for GLONASS.
After that time, a receiver must download new ephemeris data.
Ephemeris download can take from dozens of seconds to several minutes, hours or may fail
to download.
Assisted-GNSS is a mechanism to provide ephemeris assistance from external source, this
reduces considerably the time to get fix especially in critical environments when the
ephemeris download time could be very long.
Teseo-LIV3R supports the Reat-Time Assisted GNSS.
4.1 RealTime AGNSS
RealTime Assisted GNSS (RT-AGNSS) is a server based Assisted GNSS solution,
therefore it requires a network connection to download assistance data from the server.
RT-AGNSS works by downloading from an assistance server the real time ephemeris data.
Server access is allowed thanks to internal keyword provided by Teseo-LIV3R to the Host
processor and the acquired real-time data has to be provided to Teseo-LIV3R.
Proprietary NMEA commands are supported on Teseo-LIV3R to acquire the credential
access to the external server and to inject the data to Teseo-LIV3R.
STMicroelectronics partner provides available server solution access for free on Teseo-
LIV3R solution.
RealTime A-GNSS allows continuous real-time satellite position determination.
Clock generation Teseo-LIV3R
12/29 DS12821 Rev 1
5 Clock generation
5.1 Temperature-Compensated Crystal Oscillator (TCXO)
Highly stable 26 MHz oscillator controls the down conversion process in RF block of the
Teseo-LIV3R. Characteristics of this component are important factors for higher sensitivity
to maximize performance especially in weak-signal environments, as well as to minimize
TTFF (Time To First Fix) and improve navigation stability.
5.2 Real Time Clock (RTC)
This is an always-on power domain dedicated to RTC logic (backup system) with 32 KB
SRAM and supplied with a dedicated voltage regulator.
The RTC provides a high resolution clock which can be used for GPS. It keeps the time
when the system is inactive and it is internally used to wake up the system when in low
power mode. It has a clock trimming feature to compensate for the accuracy of the
32.768 KHz crystal and a secured time update.
DS12821 Rev 1 13/29
Teseo-LIV3R I/O interfaces
27
6 I/O interfaces
Teseo-LIV3R supports two I/O interfaces:
UART
I2C
Both these interfaces support NMEA protocol.
6.1 UART
The Universal Asynchronous Receiver/Transmitter (UART) supports much of the
functionality of the industry-standard 16C650 UART.
The UART performs serial-to-parallel conversion on data asynchronously received from a
peripheral device on RX0 pin, and parallel-to-serial conversion on data written by CPU for
transmission on TX0 pin. The transmit and receive paths are buffered with internal FIFO
memories allowing up to 64 data byte for transmission, and 64 data byte with 4-bit status
(break, frame, parity, and overrun) for receive.
6.2 I2C
Teseo-LIV3R includes a slave I2C interface configurable; I2C is a two-wire communication
interface invented by Philips Semiconductor.
Unlike all other interfaces, I2C is not able to communicate in full-duplex mode; it uses only
two bidirectional open-drain lines, Serial Data Line on pin SDA and Serial Clock Line on pin
SCL, pulled up with resistors.
Teseo-LIV3R receiver always acts as slave and it cannot initiate data transmission on the
bus; host has to periodically pull the receiver to check about data availability.
The main features are:
Normal speed (100 KHz) and Fast speed (400 KHz) supported
I2C-slave address configurable using the firmware configurator
FW configuration Teseo-LIV3R
14/29 DS12821 Rev 1
7 FW configuration
All configuration parameters are grouped in a data block. Each field is addressed by a
unique ID. The IDs are made by three digits: the most significant one represents the
parameter type and the others are used to identify different parameters of the same type.
Default setting of configuration data block is hard coded into the binary image file.
A new configuration can be built using the PC Tool Teseo-Suite, available at www.st.com or
using runtime configuration commands raised by the host.
Teseo-LIV3R firmware configuration is maintained until voltage supply on VBAT pin (6) is
provided.
DS12821 Rev 1 15/29
Teseo-LIV3R Power mode
27
8 Power mode
Standby mode, is the mode where only low power backup domain is running. It means
VBAT must be always maintained. It allows to have very low current consumption and fast
GNSS reacquisition at the end of the standby time due to RTC.
Teseo-LIV3R offers two different ways of standby:
Hardware standby
Software standby
8.1 Hardware standby
This standby is ensured by switching OFF VCC (pin 6) and VCC_IO (pin 7) supplies and
setting SYS_RESETn (pin 9) to 0 V. It can be activated asynchronously from GNSS binary
with one GPIO switching OFF the supplies from a host.
During this standby only VBAT (pin 6) is kept ON.
It ensures a current below 6 µA. During this standby mode VCC_RF (pin 14) is OFF.
8.2 Software standby
Software standby is activated by the internal binary.
Software standby can be:
Host driven standby: where the host sends a NMEA commands to force Teseo-LIV3R
into standby; host can woken up by Teseo-LIV3R using the Wakeup pin (pin 5);
Periodic standby: where Teseo-LIV3R enters and exits from standby using internal
RTC. Periodic fixes are from 5 seconds up to 24 hours between 2 fixes.
It ensures a current below 12 µA on Teseo-LIV3R. Be careful that VCC_RF is ON during this
standby. In case of active antenna or external LNA, it is important to switch them OFF.
Geofencing Teseo-LIV3R
16/29 DS12821 Rev 1
9 Geofencing
Geofence feature allows the Teseo-LIV3R receiver to raise an autonomous NMEA message
when the resolved GNSS position is close to a specific circle, entering or exiting from a
circle.
Teseo-LIV3R receiver supports at least 8 circular areas.
Geofencing alarm can be notified over proprietary NMEA message.
Geofencing can be configured and enabled in the firmware configurator or using the specific
geofencing configuration command.
DS12821 Rev 1 17/29
Teseo-LIV3R Odometer
27
10 Odometer
Teseo-LIV3Rreceiver supports Odometer feature.
Odometer provides information on the traveled distance using only positioning information.
Odometer can be configured using specific odometer commands during the runtime.
While enabled the odometer reports the ground distance from the last reset.
Odometer is also able to raise an autonomous message alarm when a programmed
distance is reached.
Electrical characteristics Teseo-LIV3R
18/29 DS12821 Rev 1
11 Electrical characteristics
11.1 Parameter conditions
Unless otherwise specified, all voltages are referred to GND.
11.2 Minimum and maximum values
Unless otherwise specified the minimum and maximum values are guaranteed in the worst
conditions of ambient temperature, supply voltage and frequencies by tests in production on
100% of the devices with an ambient temperature at Tc = 25 °C.
11.3 Typical values
Unless otherwise specified, typical data are based on Tc = 25 °C, VCC = 3.3 V,
VCC_IO = 3.3 V. They are given only as design guidelines and are not tested.
Unless otherwise specified, all typical curves are given only as design guidelines and are
not tested.
11.4 Absolute maximum ratings
This product contains devices to protect the inputs against damage due to high static
voltages, however it is advisable to take normal precautions to avoid application of any
voltage higher than the specified maximum rated voltages.
Table 4. Voltage characteristics
Symbol Parameter Min Max Unit
VCC Digital supply voltage 2.1 4.3 V
VBAT Backup LDO input supply voltage 2.1 4.3 V
Table 5. Thermal characteristics
Symbol Parameter Min Max Unit
Toper Operative ambient temperature -40 85 °C
DS12821 Rev 1 19/29
Teseo-LIV3R Electrical characteristics
27
11.5 Recommended DC operating conditions
Table 6. Power consumption
Symbol Parameter Test condition Typ Unit
Pw Power consumption in
standard condition
G2 = GPS only;
Tc = 25 °C;
VCC = 2.1 V;
VCC_IO = 3.3 V
TBC mW
G2 = GPS/Glonass;
Tc = 25 °C;
VCC = 2.1 V;
VCC_IO = 3.3 V
TBC mW
G2 = GPS/Beidou;
Tc = 25 °C;
VCC = 2.1 V;
VCC_IO = 3.3 V
TBC mW
PwStandby Power consumption
STANDBY mode
RTC running = 32.768 KHz;
Tc = 25 °C;
VCC = VCC_IO = 0 V
Vbat = 3.3 V
TBC µW
Table 7. Recommended DC operating conditions
Symbol Parameter Min Typ Max Unit
VCC Power supply pins 2.1 3.3 4.3 V
VCC_Bat Power supply pins for backup internal
logic 2.1 3.3 4.3 V
VCC_IO IO Supply Voltage 3.0 3.3 3.60 V
DS12821 Rev 1 21/29
Teseo-LIV3R Shipping information
27
13 Shipping information
Teseo-LIV3R is delivered as reeled tapes.
For protection from physical damage, the reels are individually packed in cartons.
13.1 Reels
Teseo-LIV3R reel specification is as shown in Figure 4
Figure 4. Carrier tape
Figure 5. Teseo-LIV3R orientation
DS12821 Rev 1 23/29
Teseo-LIV3R Shipping information
27
Figure 8. PB band
13.2 Packing cartons for reels
To avoid damage each Teseo-LIV3R reel has a dedicated carton box of 340 x 340 x 38 mm.
13.3 ESD handling precautions
Teseo-LIV3R module is Electrostatic Sensitive Device (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.
13.4 Moisture sensitivity levels
The Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions
required.
Teseo-LIV3R modules are rated at MSL level 3 (three).
Labeling information Teseo-LIV3R
24/29 DS12821 Rev 1
14 Labeling information
The labeling of Teseo-LIV3R reports product information.
Information layout of the product is shown in Figure 9.
Figure 9. Labeling information of Teseo-LIV3R
Information description are reported in Table 8.
Table 8. Labeling information description
Items Description
Internal production code Information code related only to the production line
QR Sample code QR Sample code used for traceability information of any parts
Product Name Official product name for Ordering Code
Pin 1 hole Hole on the shield to identify Pin 1
DS12821 Rev 1 25/29
Teseo-LIV3R Reflow soldering profile
27
15 Reflow soldering profile
The Teseo-LIV3R is a high temperature strength surface mount GNSS module supplied on
a 18 pin, 6-layer PCB. The final assembly recommended reflow profiles are indicated here
below.
Soldering phase has to be executed with care: in order to avoid undesired melting
phenomenon, particular attention has to be taken on the set up of the peak temperature.
Some suggestions for the temperature profile based on following recommendations.
Figure 10. Soldering profiles
Table 9. Soldering profile values
Profile feature PB-free assembly
Average ramp-up rate (TSMAX to Tp)3 °C/sec max
Preheat:
– Temperature min (TSmin)
– Temperature max (TSmax)
–Time (t
Smin to tSmax) (tS)
150 °C
200 °C
60-100 sec
Time maintained above:
– Temperature (TL)
–Time (t
L)
217 °C
60-70 sec
Peak temperature (TP) 245 +/- 5 °C
Time within 5 °C of actual peak temperature (TP) 10-20 sec
Ramp-down rate 6 °C/sec
Time from 25 °C to peak temperature 8 minute max.
ECOPACK®Teseo-LIV3R
26/29 DS12821 Rev 1
16 ECOPACK®
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
DS12821 Rev 1 29/29
Teseo-LIV3R
29
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