VL53L1 datasheet(12/35 Pages) STMICROELECTRONICS

Part #	VL53L1

Description	A new generation, long distance ranging Time-of-Flight sensor based on ST?셲 FlightSensense™ technology

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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12 / 35 page

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.

VL53L1 Datasheet(PDF) 12 Page - STMicroelectronics