This is information on a product in full production.
November 2018 DocID031281 Rev 3 1/35
VL53L1X
A new generation, long distance ranging Time-of-Flight sensor
based on ST’s FlightSense™ technology
Datasheet - production data
Features
•Fully integrated miniature module
– Size: 4.9x2.5x1.56 mm
– Emitter: 940 nm invisible laser (Class1)
– SPAD (single photon avalanche diode)
receiving array with integrated lens
– Low-power microcontroller running advanced
digital firmware
•Pin-to-pin compatible with the VL53L0X
FlightSense™ ranging sensor
•Fast and accurate long distance ranging
– Up to 400 cm distance measurement
– Up to 50 Hz ranging frequency
•Typical full field-of-view (FoV): 27 °
•Programmable region-of-interest (ROI) size on
the receiving array, allowing the sensor FoV to be
reduced
•Programmable ROI position on the receiving
array, providing multizone operation control from
the host
•Easy integration
– Single reflowable component
– Can be hidden behind many cover window
materials
– Software driver and code examples for
turnkey ranging
– Single power supply (2v8)
– I²C interface (up to 400 kHz)
– Shutdown and interrupt pins
Applications
•User detection (Autonomous low-power mode) to
power on/off and lock/unlock devices like
personal computers/laptops and the IoT
•Service robots and vacuum cleaners (long
distance and fast obstacle detection)
•Drones (landing assistance, hovering, ceiling
detection)
•Smart shelves and vending machines (goods
inventory monitoring)
•Sanitary (robust user detection whatever the
target reflectance)
•Smart building and smart lighting (people
detection, gesture control)
•1 D gesture recognition
•Laser assisted autofocus which enhances the
camera autofocus system speed and robustness,
especially in difficult scenes (low light and low
contrast) and video focus tracking assistance
Description
The VL53L1X is a state-of-the-art, Time-of-Flight
(ToF), laser-ranging sensor, enhancing the ST
FlightSense™ product family. It is the fastest
miniature ToF sensor on the market with accurate
ranging up to 4 m and fast ranging frequency up to
50 Hz
Housed in a miniature and reflowable package, it
integrates a SPAD receiving array, a 940 nm
invisible Class1 laser emitter, physical infrared
filters, and optics to achieve the best ranging
performance in various ambient lighting conditions
with a range of cover window options.
Unlike conventional IR sensors, the VL53L1X uses
ST’s latest generation ToF technology which allows
absolute distance measurement whatever the target
color and reflectance.
It is also possible to program the size of the ROI on
the receiving array, allowing the sensor FoV to be
reduced.
www.st.com
Contents VL53L1X
2/35 DocID031281 Rev 3
Contents
1 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Technical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Device pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 System functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 System state machine description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Customer manufacturing calibration flow . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Ranging description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Key parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5.1 Distance mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5.2 Timing budget (TB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.6 Power sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6.1 Power up and boot sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7 Ranging sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.8 Sensing array optical center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Ranging performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Test conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Accuracy, repeatability, and ranging error definitions . . . . . . . . . . . . . . . . 16
3.2.1 Accuracy definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.2 Repeatability definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.3 Ranging error definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Minimum ranging distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Performances in dark conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Performances in ambient light conditions . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.5.1 Long distance mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.5.2 Short distance mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.6 Performances in partial ROI in dark conditions . . . . . . . . . . . . . . . . . . . . 18
DocID031281 Rev 3 3/35
VL53L1X Contents
35
4 Control interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 I2C interface - timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.2 I2C interface - reference registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.3 ESD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.4 Current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.5 Digital I/O electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6 Outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7 Laser safety considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8 Packaging and labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.1 Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2 Inner box labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.3 Packing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.4 Tape outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.5 Pb-free solder reflow process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.6 Handling and storage precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.6.1 Shock precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.6.2 Part handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.6.3 Compression force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.6.4 Moisture sensitivity level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.7 Storage temperature conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10 Acronyms and abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11 ECOPACK® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Product overview VL53L1X
4/35 DocID031281 Rev 3
1 Product overview
1.1 Technical specification
1.2 System block diagram
Figure 1. VL53L1X block diagram
Table 1. Technical specification
Feature Detail
Package Optical LGA12
Size 4.9 x 2.5 x 1.56 mm
Operating voltage 2.6 to 3.5 V
Operating temperature: -20 to 85 °C
Receiver Field Of View (diagonal
FOV) Programmable from 15 to 27 degrees
Infrared emitter 940 nm
I2CUp to 400 kHz (Fast mode) serial bus
Programmable address. Default is 0x52.
9//;PRGXOH
9//;VLOLFRQ
6LQJOH3KRWRQ
$YDODQFKH'LRGH63$'
'HWHFWLRQDUUD\
1RQ9RODWLOH
0HPRU\
520
5$0
0LFURFRQWUROOHU
$GYDQFHG
5DQJLQJ&RUH
9&6(/'ULYHU
QP
,5 ,5
$9''
$9''9&6(/
*1'
$9669&6(/
;6+87
*3,26&/
6'$
DocID031281 Rev 3 5/35
VL53L1X Product overview
35
1.3 Device pinout
Figure 2 shows the pinout of the VL53L1X (see also Figure 18).
Figure 2. VL53L1X pinout (bottom view)
Note: AVSSVCSEL and GND are ground pins and can be connected together in the application
schematics.
GND2, GND3, and GND4 are standard pins that we force to the ground domain in the
application schematics to avoid possible instabilities if set to other states.
Table 2. VL53L1X pin description
Pin number Signal name Signal type Signal description
1 AVDDVCSEL Supply VCSEL supply, to be connected to main supply
2 AVSSVCSEL Ground VCSEL ground, to be connected to main ground
3 GND Ground To be connected to main ground
4 GND2 Ground To be connected to main ground
5 XSHUT Digital input Xshutdown pin, active low
6 GND3 Ground To be connected to main ground
7 GPIO1 Digital output Interrupt output. Open drain output
8 DNC Digital input Do not connect, must be left floating
9SDA
Digital
input/output I2C serial data
10 SCL Digital input I2C serial clock input
11 AVDD Supply Supply, to be connected to main supply
12 GND4 Ground To be connected to main ground
$9''9&6(/
$9669&6(/
*1'
*1'
;6+87
$9''
6&/
6'$
'1&
*3,2
*1'
*1'
Product overview VL53L1X
6/35 DocID031281 Rev 3
1.4 Application schematic
Figure 3 shows the application schematic of the VL53L1X.
Figure 3. VL53L1X schematic
Note: Capacitors on external supply AVDD should be placed as close as possible to the
AVDDVCSEL and AVSSVCSEL module pins.
Note: External pull up resistor values can be found in I2C-bus specification. Pull ups are typically
fitted only once per bus, near the host. For suggested values see Table 3.
Note: XSHUT pin must always be driven to avoid leakage current. A pull up is needed if the host
state is not known.
XSHUT is needed to use HW standby mode (no I2C communication).
Note: XSHUT and GPIO1 pull up recommended values are 10 kOhms
Note: GPIO1 to be left unconnected if not used
Table 3 show recommended values for the pull up and series resistors for an AVDD of 1.8 V
to 2.8 V in I2C Fast mode (up to 400 kHz).
9//;
;6+87
*3,2
6'$
6&/
+267
'1&
$9''9&6(/
$9''
Q) )
$9''
$9669&6(/
*1'
*1'
*1'
*1'
,29''
&DSDFLWRUVDV
FORVHDV
SRVVLEOHWR
9//;
Table 3. Suggested pull up and series resistors for I2C Fast mode
I2C load capacitance (CL) (1)
1. For each bus line, CL is measured in the application PCB by the customer.
Pull up resistor (Ohms)
CL ≤ 90 pF 3.6 k
90 pF < CL ≤ 140 pF 2.4 k
140 pF < CL ≤ 270 pF 1.2 k
270 pF < CL ≤ 400 pF 0.8 k
DocID031281 Rev 3 7/35
VL53L1X Functional description
35
2 Functional description
2.1 System functional description
Figure 4 shows the system level functional description. The host customer application
controls the VL53L1X device using an API (application programming interface). The API
implementation is delivered to the customer as a driver (Bare C code).
The driver shares with the customer application a set of high-level functions that allow
control of the VL53L1X like initialization, ranging start/stop, and setting the system
accuracy.
The driver enables fast development of end user applications without the complication of
direct multiple register access. The driver is structured in a way that it can be compiled on
any kind of platform through a good hardware abstraction layer.
A detailed description of the driver is available in the VL53L1X API user manual (UM2356).
Figure 4. VL53L1X system functional description
+267
8VHU
$SSOLFDWLRQ
9//;
GULYHU
9//;
,&
DocID031281 Rev 3 9/35
VL53L1X Functional description
35
2.3 Customer manufacturing calibration flow
The VL53L1X driver includes calibration functions. To benefit from device full performances,
it is recommended they be run once at the customer production line.
Device calibration allows part-to-part parameter variations and cover glass presence that
may affect device performances to be compensated.
Calibration data stored in the host have to be loaded into the VL53L1X at each startup using
a dedicated driver function.
Three calibration steps are needed: RefSPAD, offset and crosstalk.
RefSPAD and crosstalk calibrations have to be performed whenever the customer adds a
protective cover glass on top of the VL53L1X module.
Offset calibration has to be performed in all situations. It allows reflow and cover glass
effects to be compensated.
The detailed procedure is provided in the VL53L1X API user manual (UM2356).
2.4 Ranging description
The VL53L1X software driver proposes turnkey solution to allow fast implementation and
easy ranging in all customer applications:
Autonomous ranging mode is the default configuration that offers the optimized VL53L1X
functionalities.
•Ranging is continuous, with a programmable delay between two ranging operations
(called an inter-measurement period). Ranging duration (timing budget) is also
programmable.
•The user can set distance thresholds (below, above, inside, or outside the user-defined
thresholds). An interrupt is raised only when threshold conditions are met.
•ROI size and position are programmable: the user may chose a custom FoV from 4x4
SPADs (minimum size) up to 16x16 SPADs (full FoV).
•A clear interrupt is mandatory to allow the next ranging data to be updated.
If the ranging distance cannot be measured (in the case of no target or a weak signal), a
corresponding range status is generated and can be read by the host.
The VL53L1X software driver provides turnkey functions to read output results after the
measurement. The main values reported are:
•Ranging distance in mm
•Return signal rate
•Ambient signal rate
•Range status
Range status and output measurement definitions are provided in the VL53L1X API user
manual (UM2356).
Functional description VL53L1X
10/35 DocID031281 Rev 3
2.5 Key parameters
2.5.1 Distance mode
The VL53L1X has three distance modes (DM): short, medium, and long.
Long distance mode allows the longest possible ranging distance of 4 m to be reached.
However, this maximum ranging distance is impacted by ambient light.
Short distance mode is more immune to ambient light, but its maximum ranging distance is
typically limited to 1.3 m.
Test conditions: timing budget = 100 ms, white target 88 %, dark = no IR ambient,
ambient light = 200 kcps/SPAD.
Table 4. Maximum distance vs. Distance mode under ambient light
Distance
mode
Max. distance in
dark (cm)
Max. distance under strong
ambient light (cm)
Short 136 135
Medium 290 76
Long 360 73
DocID031281 Rev 3 11/35
VL53L1X Functional description
35
2.5.2 Timing budget (TB)
The VL53L1X timing budget can be set from 20 ms up to 1000 ms.
•20 ms is the minimum timing budget and can be used only in Short distance mode.
•33 ms is the minimum timing budget which can work for all distance modes.
•140 ms is the timing budget which allows the maximum distance of 4 m (in the dark on
a white chart) to be reached under Long distance mode
Increasing the timing budget increases the maximum distance the device can range and
improves the repeatability error. However, average power consumption augments
accordingly.
Figure 6. Maximum distance and repeatability error vs. timing budget
Test conditions: timing budget = 33 ms, 140 ms, 200 ms, grey target 54 %,
ambient light = dark.
Functional description VL53L1X
12/35 DocID031281 Rev 3
2.6 Power sequence
2.6.1 Power up and boot sequence
There are two options available for device power up/boot.
Option 1: the XSHUT pin is connected and controlled from the host.
This option optimizes power consumption as the VL53L1X can be completely powered off
when not used, and then woken up through a host GPIO (using the XSHUT pin).
Hardware (HW) standby mode is defined as the period when the power supply is present
and XSHUT is low.
Figure 7. Power up and boot sequence
Note: Boot duration is 1.2ms max.
Option 2: the XSHUT pin is not controlled by the host, it is tied to the power supply value
through the pull up resistor.
When the XSHUT pin is not controlled, the power up sequence is presented in Figure 8. In
this case, the device goes automatically to Software (SW) standby after boot, without
entering HW standby.
Figure 8. Power up and boot sequence with XSHUT not controlled
Note: Boot duration is 1.2 ms max.
Note: In all cases, XSHUT has to be raised only when the power supply is tied on.
;6KXW
6\VWHP6WDWH 3RZHU2II +:6WDQGE\ 6:6WDQGE\%RRW
3RZHU6XSSO\
;6KXW
6\VWHP6WDWH 3RZHU2II 6:6WDQGE\%RRW
3RZHU6XSSO\
DocID031281 Rev 3 13/35
VL53L1X Functional description
35
2.7 Ranging sequences
The following figure shows the combination of the driver commands and the system states.
Figure 9. Autonomous sequence
Note: Timing budget and inter measurement timings are the parameters set by the user, using a
dedicated driver function.
5DQJLQJ
3RZHU6XSSO\
*3,2,QWHUUXSW
;6KXW
'ULYHU&RPPDQG
6WDUW
5DQJLQJ
6\VWHP6WDWH
6:6WDQGE\ 6:6WDQGE\
5DQJLQJ
6WRS
5DQJ
*HW
5DQJ
&OHDU
,QW
5DQJLQJ 5DQJLQJ
,QLW
*HW
5DQJ
7LPLQJ%XGJHW
,QWHU0HDVXUHPHQW
7LPLQJ%XGJHW
,QWHU0HDVXUHPHQW
,QWHU0HDVXUHPHQW3HULRG
Functional description VL53L1X
14/35 DocID031281 Rev 3
2.8 Sensing array optical center
VL53L1X module includes a lens that focus the photons on the 16x16 SPADs sensing array.
The sensing array optical center specification takes into account the part-to-part variation in
production.
The optical center is defined by coordinates (Xo and Yo).
The optical center is measured for each part during a factory test at STMicroelectronics. The
coordinates are stored in the VL53L1X non-volatile memory and are readable by the
customer through the software driver in the application. This helps optimize design
alignment with the camera and ranging performances in the application.
The green array in Figure 10: Optical center specification gives the possible location of the
optical center.
Figure 10. Optical center specification
For more details please refer to VL53L1X API user manual (UM2356)
Table 5. Optical center specification
Parameter Min. Typ. Max. Unit
Xo offset -2 0 2
SPAD
Yo offset -2 0 2
DocID031281 Rev 3 15/35
VL53L1X Ranging performances
35
3 Ranging performances
3.1 Test conditions
In all measurement tables of this specification, it is considered that:
1. The full FoV (typically 27 °) is covered or a partial FoV is covered after a specific ROI is
programmed by the user (array size from 4x4 SPADs to 16x16 SPADs).
2. Charts used as targets are: grey 17 % reflectance (N4.74 Munsell), grey 54 %
reflectance (N8.25 Munsell), and white 88 % reflectance (N9.5 Munsell).
3. Nominal voltage (2.8 V) and temperature (23 °C).
4. Detection rate is considered as 100 %.
5. Unless mentioned, the device is setup and controlled through the driver using the
following settings:
a) Distance mode is long
b) Timing budget is 100 ms
c) No cover glass is present
d) Target covers the full FoV
6. Ambient light is defined as follows:
a) Dark = no IR light in the band 940 nm ±30 nm
b) 50 kcps/SPAD = lighting on a sunny day from behind a window(a)
c) 200 kcps/SPAD = lighting on a sunny day from behind a window, with direct
illumination on the sensor
d) For reference, usual office lighting is around 5 kcps/SPAD
a. kcps is kilo counts per second. kcps/SPAD is the return ambient rate measured by the VL53L1X.
Ranging performances VL53L1X
16/35 DocID031281 Rev 3
3.2 Accuracy, repeatability, and ranging error definitions
3.2.1 Accuracy definition
Accuracy = mean distance – actual distance
•Mean distance is the average of 32 measured distances
•Actual distance is the actual target distance
Accuracy can be affected by an offset error, a temperature drift, and a voltage drift.
3.2.2 Repeatability definition
Repeatability is the standard deviation of the mean ranging value of 32 measurements. It
can be improved by increasing the timing budget. A typical repeatability value for VL53L1X
is from ±1 % to ±0.15 % depending on the timing budget and the ambient light.
3.2.3 Ranging error definition
Ranging error = accuracy + repeatability error.
This ranging error value is our metrics in the following performances tables.
3.3 Minimum ranging distance
The minimum ranging distance is 4 cm. Under this minimum distance, the sensor will detect
a target, but the measurement will not be accurate.
3.4 Performances in dark conditions
Test conditions (including those described in Section 3.1: Test conditions) are:
•Ambient light = dark
•Timing budget = 100 ms unless mentioned
•Long distance mode
Table 6. Performances in dark conditions
Parameter Target reflectance Min. value Typ. value
Max distance (cm)
White 88 % 260 360
(400 with TB = 140 ms)
Grey 54 % 220 340
Grey 17 % 80 170
Ranging error (mm) ± 20
DocID031281 Rev 3 17/35
VL53L1X Ranging performances
35
3.5 Performances in ambient light conditions
3.5.1 Long distance mode
Test conditions (including those described in Section 3.1: Test conditions) are:
•Ambient light = dark, 50 kcps/SPAD, 200 kcps/SPAD
•Distance mode = long
3.5.2 Short distance mode
Test conditions (including those described in Section 3.1: Test conditions) are:
•Ambient light = dark, 200 kcps/SPAD
•Distance mode = short
Table 7. Typical performances in ambient light with long distance mode
Parameter Target reflectance Dark 50 kcps/SPAD 200 kcps/SPAD
Max. distance (cm)
White 88 % 360 166 73
Grey 54 % 340 154 69
Grey 17 % 170 114 68
Ranging error (mm) ± 20 ± 25 ± 25
Table 8. Typical performances in ambient light conditions with short distance mode
Parameter Target reflectance Dark 200 kcps/SPAD
Max. distance (cm)
White 88 % 130 130
Grey 54 % 130 130
Grey 17% 130 120
Ranging error (mm) ± 20 ± 25
Ranging performances VL53L1X
18/35 DocID031281 Rev 3
3.6 Performances in partial ROI in dark conditions
Tes t conditions (including those described in Section 3.1: Test conditions) are:
•Ambient light = dark
•Target covers partial FoV
•ROI centered on optical center
•Long distance mode
Table 9. Typical performances in partial ROI in dark conditions
Parameter Target reflectance 16x16 8x8 4x4
Max. distance (cm)
White 88 % 360 308 170
Grey 54 % 340 254 143
Grey 17% 170 119 45
Diagonal FoV (degrees) 27 20 15
Ranging error (mm) ± 20 ± 20 ± 20
DocID031281 Rev 3 19/35
VL53L1X Control interface
35
4 Control interface
This section specifies the control interface. The I2C interface uses two signals: the serial
data line (SDA) and serial clock line (SCL). Each device connected to the bus uses a unique
address and a simple master/slave relationships exists.
Both SDA and SCL lines are connected to a positive supply voltage using pull up resistors
located on the host. Lines are only actively driven low. A high condition occurs when the
lines float and the pull up resistors pull them up. When no data are transmitted both lines are
high.
Clock signal (SCL) generation is performed by the master device. The master device
initiates data transfer. The I2C bus on the VL53L1X has a maximum speed of 400 kbits/s
and uses a device address of 0x52.
Figure 11. Data transfer protocol
Information is packed in 8-bit packets (bytes) always followed by an acknowledge bit, Ac for
VL53L1X acknowledge and Am for master acknowledge (host bus master). The internal
data are produced by sampling SDA at a rising edge of SCL. The external data must be
stable during the high period of SCL. The exceptions to this are start (S) or stop (P)
conditions when SDA falls or rises respectively, while SCL is high.
A message contains a series of bytes preceded by a start condition and followed by either a
stop or repeated start (another start condition but without a preceding stop condition)
followed by another message. The first byte contains the device address (0x52) and also
specifies the data direction. If the least significant bit is low (that is, 0x52) the message is a
master-write-to-the-slave. If the LSB is set (that is, 0x53) then the message is a master-
read-from-the-slave.
Figure 12. VL53L1X I2C device address: 0x52
All serial interface communications with the camera module must begin with a start
condition. The VL53L1X module acknowledges the receipt of a valid address by driving the
SDA wire low. The state of the read/write bit (LSB of the address byte) is stored and the next
byte of data, sampled from SDA, can be interpreted. During a write sequence, the second
byte received provides a 16-bit index which points to one of the internal 8-bit registers.
12 78Ac/Am
Start condition
Stop condition
SDA
SCL
Acknowledge
P
S3 4 56
Address or data byte
MSB LSB
MSBit LSBit
0101001R/W
Control interface VL53L1X
20/35 DocID031281 Rev 3
Figure 13. VL53L1X data format (write)
As data are received by the slave, they are written bit-by-bit to a serial/parallel register. After
each data byte has been received by the slave, an acknowledge is generated, the data are
then stored in the internal register addressed by the current index.
During a read message, the contents of the register addressed by the current index is read
out in the byte following the device address byte. The contents of this register are parallel
loaded into the serial/parallel register and clocked out of the device by the falling edge of
SCL.
Figure 14. VL53L1X data format (read)
At the end of each byte, in both read and write message sequences, an acknowledge is
issued by the receiving device (that is, the VL53L1X for a write and the host for a read).
A message can only be terminated by the bus master, either by issuing a stop condition or
by a negative acknowledge (that is, not pulling the SDA line low) after reading a complete
byte during a read operation.
The interface also supports auto-increment indexing. After the first data byte has been
transferred, the index is automatically incremented by 1. The master can therefore send
data bytes continuously to the slave until the slave fails to provide an acknowledge or the
master terminates the write communication with a stop condition. If the auto-increment
feature is used the master does not have to send address indexes to accompany the data
bytes.
Figure 15. VL53L1X data format (sequential write)
VL53L1X acknowledges Acknowledge from VL53L1X
SAsADDRESS[7:0]
INDEX[15:8]
As DATA[7:0] As
P
0x52 (write)
Start
Stop
valid address
As
INDEX[7:0]
SAs
ADDRESS[7:0] INDEX[7:0] As P
0x52 (write)
SAs
ADDRESS[7:0] Am
DATA[7:0] P
0x53 (read)
INDEX[15:8] As
PAs
DATA[7:0] As
DATA[7:0] As
DATA[7:0]
SAs
ADDRESS[7:0] INDEX[7:0] As P
0x52 (write)
INDEX[15:8] As
DocID031281 Rev 3 21/35
VL53L1X Control interface
35
Figure 16. VL53L1X data format (sequential read)
4.1 I2C interface - timing characteristics
Timing characteristics are shown in Table 10. Please refer to Figure 17 for an explanation of
the parameters used.
SAs
ADDRESS[7:0] Am
DATA[7:0]
P
0x53 (read)
Am
DATA[7:0]
Am
DATA[7:0] Am
DATA[7:0] Am
DATA[7:0]
SAs
ADDRESS[7:0] INDEX[7:0] As P
0x52 (write)
INDEX[15:8] As
Table 10. I2C interface - timing characteristics for Fast mode (400 kHz)
Symbol Parameter Min. Typ. Max. Unit
FI2C Operating frequency 0 - 400 kHz
tLOW Clock pulse width low 1.3 - -
μs
tHIGH Clock pulse width high 0.6 - -
tSP
Pulse width of spikes which are
suppressed by the input filter - - 50 ns
tBUF Bus free time between transmissions 1.3 - - µs
tHD.STA Start hold time 0.26 - -
μstSU.STA Start set-up time 0.26 - -
tHD.DAT Data in hold time 0 - 0.9
tSU.DAT Data in set-up time 50 - -
nstRSCL/SDA rise time - - 300
tFSCL/SDA fall time - - 300
tSU.STO Stop set-up time 0.6 - - μs
Ci/o Input/output capacitance (SDA) - - 10
pFCin Input capacitance (SCL) - - 4
CLLoad capacitance - 125 400
Control interface VL53L1X
22/35 DocID031281 Rev 3
Figure 17. I2C timing characteristics
All timings are measured from either VIL or VIH.
4.2 I2C interface - reference registers
The registers shown in the table below can be used to validate the user I2C interface.
Note: The I2C read/writes can be 8,16 or 32-bit. Multi-byte reads/writes are always addressed in
ascending order with MSB first as shown in Table 12.
The customer must use the VL53L1X software driver for easy and efficient ranging
operations to match performance and accuracy criteria. Hence full register details are not
exposed. The customer should refer to the VL53L1X API user manual (UM2356).
SDA
SCL
t
HD.STA
t
R
t
HIGH
t
F
t
SU.DAT
t
HD.DAT
t
SU.STA
t
SU.STO
...
...
t
HD.STA
t
LOW
t
BUF
stopstartstop start
V
IH
V
IL
V
IH
V
IL
Table 11. Reference registers
Register name Index After fresh reset, without
driver loaded
Model ID 0x010F 0xEA
Module Type 0x0110 0xCC
Mask Revision 0x0111 0x10
Table 12. 32-bit register example
Register address Byte
Address MSB
Address + 1 ..
Address + 2 ..
Address + 3 LSB
DocID031281 Rev 3 23/35
VL53L1X Electrical characteristics
35
5 Electrical characteristics
5.1 Absolute maximum ratings
Note: Stresses above those listed in Table 13 may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at these or any other conditions
above those indicated in the operational sections of the specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
5.2 Recommended operating conditions
5.3 ESD
The VL53L1X is compliant with ESD values presented inTable 15
Table 13. Absolute maximum ratings
Parameter Min. Typ. Max. Unit
AVDD -0.5 - 3.6
V
SCL, SDA, XSHUT and GPIO1 -0.5 - 3.6
Table 14. Recommended operating conditions (1)
1. There are no power supply sequencing requirements. The I/Os may be high, low, or floating when AVDD is
applied. The I/Os are internally failsafe with no diode connecting them to AVDD
Parameter Min. Typ. Max. Unit
Voltage (AVDD) 2.6 2.8 3.5
V
IO (IOVDD) (2)
2. XSHUT should be high level only when AVDD is on.
Standard mode 1.6 1.8 1.9
2V8 mode (3)(4)
3. SDA, SCL, XSHUT and GPIO1 high levels have to be equal to AVDD in 2V8 mode.
4. The default driver mode is 1V8.
2V8 mode is programmable using device settings loaded by the driver. For more details please refer to the
VL53L1X API user manual (UM2356).
2.6 2.8 3.5
Ambient temperature (normal operating) -20 85 °C
Table 15. ESD performances
Parameter Specification Conditions
Human body model JS-001-2012 ± 2 kV, 1500 Ohms, 100 pF
Charged device model JESD22-C101 ± 500 V
Electrical characteristics VL53L1X
24/35 DocID031281 Rev 3
5.4 Current consumption
5.5 Digital I/O electrical characteristics
Table 16. Power consumption at ambient temperature (1)
1. All current consumption values include silicon process variations. Temperature and voltage are nominal
conditions (23 °C and AVDD 2v8). All values include AVDD and AVDDVCSEL.
Parameter Min. Typ. Max. Unit
HW standby 3 5 7
uASW standby (2)
2. In 2v8 (IOVDD) mode, pull ups have to be modified, then SW Standby consumption is increased by 0.6 µA.
469
Inter measurement 20
Ranging average (AVDD + AVDDVCSEL) (3) (4)
3. Average consumption during ranging operation in long distance mode.
4. Peak current (including VCSEL) can reach 40 mA.
16 18 mA
Average power consumption at 10 Hz with 33 ms
timing budget 20
mW
Average power consumption at 1 Hz with 20 ms
timing budget when no target detected 0.9
Average power consumption at 1 Hz with 20 ms
timing budget when target detected 1.4
Table 17. Digital I/O electrical characteristics
Symbol Parameter Min. Typ. Max. Unit
Interrupt pin (GPIO1)
VIL Low level input voltage -
-
0.3 IOVDD
V
VIH High level input voltage 0.7 IOVDD -
VOL
Low level output voltage
(IOUT = 4 mA) -0.4
VOH
High level output voltage
(IOUT = 4 mA) IOVDD-0.4 -
FGPIO
Operating frequency
(CLOAD = 20 pF) 0108MHz
I2C interface (SDA/SCL)
VIL Low level input voltage -0.5
-
0.6
V
VIH High level input voltage 1.12 IOVDD+0.5
VOL
Low level output voltage
(IOUT = 4 mA) -0.4
IIL/IH
Leakage current (1)
1. AVDD = 0 V
-10
µA
Leakage current (2)
2. AVDD = 2.85 V; I/O voltage = 1.8 V
-0.15
DocID031281 Rev 3 25/35
VL53L1X Outline drawing
35
6 Outline drawing
Figure 18. Outline drawing (page 1/3)
5
LQSRV
571/HQVGLDPHWHU
EHQHDWKILOWHUJODVV
(07$SHUWXUH
EHQHDWKILOWHUJODVV
LQSRV
$UHDUHVHUYHGIRUODVHUPDUNLQJ
'LDPHWULF9LHZ
6FDOH
1RGUDIWRQWUDSH]RLG
VKDSHGHQGVVHH
QRWH
1RWHV
'LPHQVLRQVPDUNHG
DUHLQVSHFWLRQGLPHQVLRQVFKHFNHGDW24&
8QVSHFLILHGUDGLL
'(*GUDIWRQH[WHUQDOVLGHVLGHZDOOVRIPRGXOHXQOHVVVWDWHG'LPHQVLRQVJLYHQRQHGJHRI
SODVWLFFDSDUHGDWXPHGWREDVHFDSVXUIDFH
3DJHVKRZVH[FOXVLRQFRQHVWREHNHSWIUHHRIPHFKDQLFDOLWHPVZKLFKZLOOLQWHUIHUHZLWK
PRGXOHRSHUDWLRQ7KH\DUHQRWV\VWHPSHUIRUPDQFHFRQHV
0HWDOFRQQHFWLRQSDGVDUHHOHFWURO\WLFSODWHG7+.*ROGRYHU7+.1LFNHO
5(9,6,216
5(9
'(6&5,37,21
'$7(
,1,7,$/5(/($6(
8SGDWHG/LQHU
$UHDIRUODVHUPDUNLQJRIVXEVWUDWHQRWHGRQSDJH
&RQQHFWLRQ7DEOH
$9''9&6(/
$9669&6(/
*1'
*1'
;6+87
*1'
*3,2
'1&
6'$
6&/
$9''
*1'
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
2)
$
%
&
'
(
)
$
%
&
'
(
)
/LQHDU
3ODFH'HFLPDOV
3ODFH'HFLPDOV
3ODFH'HFLPDOV
$QJXODUGHJUHHV
'LDPHWHU
3RVLWLRQ
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
,QWHUSUHWGUDZLQJSHU%6
5'$QJOH3URMHFWLRQ
$
%
&
'
(
)
$
%
&
'
(
)
6KHHW
7LWOH
0DWHULDO
)LQLVK
7ROHUDQFHVXQOHVVRWKHUZLVHVWDWHG
'UDZQ
'DWH
'UDZLQJ1R
$OOGLPHQVLRQVLQPP
6FDOH
670LFURHOHFWURQLFV
,PDJLQJ'LYLVLRQ
7KLVGUDZLQJDQGWKHLQIRUPDWLRQZLWKLQWKLVGRFXPHQWDUHWUKHSURSHUW\RI
670LFURHOHFWURQLFVDQGDUH670LFURHOHFWURQLFV&21),'(17,$/,1)250$7,21
670LFURHOHFWURQLFVUHVHUYHVDOOULJKWVDWWDFKLQJWRWKHGUDZLQJDQGWKH
LQIRUPDWLRQ,WPXVWQRWEHFRSLHGWUDQVPLWWHGPDGHSXEOLFRUXVHGLQDQ\
PDQQHURWKHUWKDQZKLFK670LFURHOHFWURQLFVKDVJLYHQSULRUZULWWHQSHUPLVVLRQ
-RVHSK+DQQDQ
'0
9//0RGXOH2XWOLQH
Outline drawing VL53L1X
26/35 DocID031281 Rev 3
Figure 19. Outline drawing (page 2/3)
3&%3DG/D\RXW
ORRNLQJWKURXJKWRSRIPRGXOH
'((3
LQSRV
'((3
*DWHUHOLHI'((3
LQSRV
'((3
DWGDWXP$
DWGDWXP$
571.((3287&RQH
(07.((3287&RQH
$
5HY
'DWH
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
2)
$
%
&
'
(
)
$
%
&
'
(
)
/LQHDU
3ODFH'HFLPDOV
3ODFH'HFLPDOV
3ODFH'HFLPDOV
$QJXODUGHJUHHV
'LDPHWHU
3RVLWLRQ
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
,QWHUSUHWGUDZLQJSHU%6
5'$QJOH3URMHFWLRQ
$
%
&
'
(
)
$
%
&
'
(
)
6KHHW
7LWOH
0DWHULDO
)LQLVK
7ROHUDQFHVXQOHVVRWKHUZLVHVWDWHG
'UDZQ
'DWH
'UDZLQJ1R
$OOGLPHQVLRQVLQPP
6FDOH
670LFURHOHFWURQLFV
,PDJLQJ'LYLVLRQ
7KLVGUDZLQJDQGWKHLQIRUPDWLRQZLWKLQWKLVGRFXPHQWDUHWUKHSURSHUW\RI
670LFURHOHFWURQLFVDQGDUH670LFURHOHFWURQLFV&21),'(17,$/,1)250$7,21
670LFURHOHFWURQLFVUHVHUYHVDOOULJKWVDWWDFKLQJWRWKHGUDZLQJDQGWKH
LQIRUPDWLRQ,WPXVWQRWEHFRSLHGWUDQVPLWWHGPDGHSXEOLFRUXVHGLQDQ\
PDQQHURWKHUWKDQZKLFK670LFURHOHFWURQLFVKDVJLYHQSULRUZULWWHQSHUPLVVLRQ
-RVHSK+DQQDQ
'0
9//0RGXOH2XWOLQH
DocID031281 Rev 3 27/35
VL53L1X Outline drawing
35
The VL53L1X module is delivered with a protective liner covering the top of the cap to protect the sensor
from foreign material during the assembly process. It must be removed by the customer just before
mounting the cover glass.
Figure 20. Outline drawing (page 3/3
5HY
'DWH
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
2)
$
%
&
'
(
)
$
%
&
'
(
)
/LQHDU
3ODFH'HFLPDOV
3ODFH'HFLPDOV
3ODFH'HFLPDOV
$QJXODUGHJUHHV
'LDPHWHU
3RVLWLRQ
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
$
%
&
'
(
)
,QWHUSUHWGUDZLQJSHU%6
5'$QJOH3URMHFWLRQ
$
%
&
'
(
)
$
%
&
'
(
)
6KHHW
7LWOH
0DWHULDO
)LQLVK
7ROHUDQFHVXQOHVVRWKHUZLVHVWDWHG
'UDZQ
'DWH
'UDZLQJ1R
$OOGLPHQVLRQVLQPP
6FDOH
670LFURHOHFWURQLFV
,PDJLQJ'LYLVLRQ
7KLVGUDZLQJDQGWKHLQIRUPDWLRQZLWKLQWKLVGRFXPHQWDUHWUKHSURSHUW\RI
670LFURHOHFWURQLFVDQGDUH670LFURHOHFWURQLFV&21),'(17,$/,1)250$7,21
670LFURHOHFWURQLFVUHVHUYHVDOOULJKWVDWWDFKLQJWRWKHGUDZLQJDQGWKH
LQIRUPDWLRQ,WPXVWQRWEHFRSLHGWUDQVPLWWHGPDGHSXEOLFRUXVHGLQDQ\
PDQQHURWKHUWKDQZKLFK670LFURHOHFWURQLFVKDVJLYHQSULRUZULWWHQSHUPLVVLRQ
-RVHSK+DQQDQ
'0
9//0RGXOH2XWOLQH
Laser safety considerations VL53L1X
28/35 DocID031281 Rev 3
7 Laser safety considerations
The VL53L1X contains a laser emitter and corresponding drive circuitry. The laser output is
designed to remain within Class 1 laser safety limits under all reasonably foreseeable
conditions including single faults in compliance with IEC 60825-1:2014 (third edition).
The laser output remains within Class 1 limits as long as the STMicroelectronics’
recommended device settings (driver settings) are used and the operating conditions
specified are respected.
The laser output remains within Class 1 limits as long as the STMicroelectronic’s
recommended device settings are used and the operating conditions specified are
respected (particularly the maximum timing budget, as described in the VL53L1X API user
manual UM2356).
The laser output power must not be increased by any means and no optics should be used
with the intention of focusing the laser beam.
Caution: Use of controls or adjustments or performance of procedures other than those specified
herein may result in hazardous radiation exposure.
Figure 21. Class 1 laser product label
DocID031281 Rev 3 29/35
VL53L1X Packaging and labeling
35
8 Packaging and labeling
8.1 Product marking
A 2-line product marking is applied on the backside of the module (i.e. on the substrate).
The first line is the silicon product code, and the second line, the internal tracking code.
Figure 22. Example of prototype marking
8.2 Inner box labeling
The labeling follows the ST standard packing acceptance specification.
The following information will be on the inner box label:
•Assembly site
•Sales type
•Quantity
•Trace code
•Marking
•Bulk ID number
8.3 Packing
At customer/subcontractor level, it is recommended to mount the VL53L1X in a clean
environment to avoid foreign material deposition.
To help avoid any foreign material contamination at phone assembly level the modules are
shipped in a tape and reel format with a protective liner.
The packaging is vacuum-sealed and includes a desiccant.
The liner is compliant with reflow at 260 °C. It must be removed during assembly of the
customer device, just before mounting the cover glass.
Packaging and labeling VL53L1X
30/35 DocID031281 Rev 3
8.4 Tape outline drawing
Figure 23. Tape outline drawing
DocID031281 Rev 3 31/35
VL53L1X Packaging and labeling
35
8.5 Pb-free solder reflow process
Table 18 and Figure 24 show the recommended and maximum values for the solder profile.
Customers have to tune the reflow profile depending on the PCB, solder paste, and material
used. We expect customers to follow the recommended reflow profile, which is specifically
tuned for VL53L1X package.
For any reason, if a customer must perform a reflow profile which is different from the
recommended one (especially peak >240 °C), this new profile must be qualified by the
customer at their own risk. In any case, the profile has to be within the “maximum” profile
limit described in Table 18.
Figure 24. Solder profile
Note: Temperature mentioned in Table 18 is measured at the top of the VL53L1X package.
Note: The component should be limited to a maximum of three passes through this solder profile.
Table 18. Recommended solder profile
Parameters Recommended Maximum Units
Minimum temperature (TS min)
Maximum temperature (TS max)
Time ts (TS min to TS max)
130
200
90-110
150
200
60 - 120
°C
°C
s
Temperature (TL)
Time (tL)
Ramp up
217
55-65
2
217
55 - 65
3
°C
s
°C/s
Temperature (Tp-10)
Time (tp)
Ramp up
-
-
-
235
10
3
°C
s
°C/s
Peak temperature (Tp) 240 245 °C
Time to peak 300 300 s
Ramp down (peak to TL)-4-6°C/s
Packaging and labeling VL53L1X
32/35 DocID031281 Rev 3
Note: As the VL53L1X package is not sealed, only a dry reflow process should be used (such as
convection reflow). Vapor phase reflow is not suitable for this type of optical component.
The VL53L1X is an optical component and as such, it should be treated carefully. This
would typically include using a ‘no-wash’ assembly process
8.6 Handling and storage precautions
8.6.1 Shock precaution
Sensor modules house numerous internal components that are susceptible to shock
damage. If a unit is subject to excessive shock, is dropped on the floor, or a tray/reel of units
is dropped on the floor, it must be rejected, even if no apparent damage is visible.
8.6.2 Part handling
Handling must be done with non-marring ESD safe carbon, plastic, or teflon tweezers.
Ranging modules are susceptible to damage or contamination. The customer is advised to
use a clean assembly process after removing the tape from the parts, and until a protective
cover glass is mounted.
8.6.3 Compression force
A maximum compressive load of 25 N should be applied on the module.
8.6.4 Moisture sensitivity level
Moisture sensitivity is level 3 (MSL) as described in IPC/JEDEC JSTD-020-C
8.7 Storage temperature conditions
Table 19. Recommended storage conditions
Parameter Min. Typ. Max. Unit
Temperature (storage) -40 23 85 °C
DocID031281 Rev 3 33/35
VL53L1X Ordering information
35
9 Ordering information
10 Acronyms and abbreviations
11 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.
Note: The ECOPACK® grade for VL53L1X is ECOPACK®2.
Table 20. Order codes
Sales type Package Packing Minimum order
quantity
VL53L1CXV0FY/1 Optical LGA12 with liner Tape and reel 3600 pcs
Table 21. Acronyms and abbreviations
Acronym/abbreviation Definition
ESD Electrostatic discharge
I2C Inter-integrated circuit (serial bus)
NVM Non volatile memory
SPAD Single photon avalanche diode
FoV Field of view
VCSEL Vertical cavity surface emitting laser
Revision history VL53L1X
34/35 DocID031281 Rev 3
12 Revision history
Table 22. Document revision history
Date Revision Changes
08-Feb-2018 1 Initial release
14-Feb-2018 2 Updated Applications and Description
29-Nov-2018 3
Updated Features: I2C interface up to 400 kHz
Table 10: updated tBUF
, tR,and tF
.
Table 18: modified Time (tp-10) to Time(tp)
Modified Figure 18, Figure 19, and Figure 20
Updated Section 7: Laser safety considerations
DocID031281 Rev 3 35/35
VL53L1X
35
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and
improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on
ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or
the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2018 STMicroelectronics – All rights reserved
