Data Sheet

Functional description VL53L1X
12/35 DocID031281 Rev 2
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.
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