ST VL53L1X - Page 8

Autonomous functionalities
• Autonomous ranging with selectable timing
budget from 20ms to 1000ms.
• In short distance, minimum timing budget is
20ms.
• Ideally, for all distance modes, minimum
timing budget is 33ms.
• If the inter-measurement timing is shorter
than the timing budget, once the device
completes the ranging, the next ranging
starts immediately.
8
Timing budget
Ranging characteristics (tbc)
• VL53L1X running in low power autonomous mode,
no data sharing through I2C, just GPIO level change if
human / object is detected.
• 4 detection thresholds criteria :
• Above High
• Below Low
• In Window (<=High AND >=Low)
• Out of Window (>High OR <Low)
• No target ( Interrupt is generated when no
target is present.)
Key figures
• No I2C data output (low
power mode)
• GPIO1 level changes (INT)
to wake-up the host
• Host can then make
VL53L1 switch to active
mode for full ranging
capabilities
INT
Key figures
• ROI size is possible ( 4x4 to 16x16 spad
array)