Introduction
The purpose of this user manual is to explain how to handle the VL53L8X Time-of-Flight (ToF) sensor, using the ultra lite driver
(ULD) API. It describes the main functions to program the device, the calibrations, and the output results.
Based on ST's FlightSense technology, the VL53L8CX incorporates an efficient metasurface lens (DOE) placed on the laser
emitter enabling the projection of a 45° x 45° square FoV onto the scene.
Its multizone capability provides a matrix of 8x8 zones (64 zones) and can work at fast speeds (60 Hz) up to 400 cm.
Thanks to the autonomous mode with programmable distance threshold, the VL53L8CX is perfect for any application requiring
low-power user detection. ST's patented algorithms and innovative module construction allow the VL53L8CX to detect, in each
zone, multiple objects within the FoV with depth understanding. ST histogram algorithms ensure cover glass crosstalk immunity
beyond 60 cm.
Like all Time-of-Flight (ToF) sensors based on ST's FlightSense technology, the VL53L8CX records, in each zone, an absolute
distance regardless of the target color and reflectance.
Housed in a miniature reflowable package that integrates a SPAD array, the VL53L8CX achieves the best ranging performance
in various ambient lighting conditions, and for a wide range of cover glass materials.
All of ST's ToF sensors integrate a VCSEL that emits a fully invisible 940 nm IR light, which is totally safe for the eyes (Class 1
certification).
Figure 1. VL53L8CX sensor module
References
VL53L8CX datasheet (DS14161).
A guide for using the VL53L8CX, low-power, high-performance Time-of-Flight
multizone ranging sensor
UM3109
User manual
UM3109 - Rev 1 - January 2023
For further information contact your local STMicroelectronics sales office.
www.st.com
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