Table 3. VL53L8CX pin description for I²C and SPI configuration

Pin number

Signal name

Signal type

Signal description

A1

INT

Digital input/output

(I/O)

Interrupt output, defaults to open drain output

(tristate), 47 kΩ pullup resistor to IOVDD required

A2

LPn

Digital input

Enables communication. Drive this pin to logic 0

to disable I²C communication when the device is

in low-power mode. Drive this pin to logic 1 to

enable I²C communication in low-power mode.

This pin is typically used when you need to

change the I²C address in multidevice systems.

If it is not used, or if interfacing via the SPI,

connect to IOVDD with a 47 kΩ pullup resistor.

A3

IOVDD

Power

1.2 V or 1.8 V I/O supply

A4

SDA / MOSI

Digital input/output

(I/O)

I²C: Data (bidirectional), 2.2 kΩ pullup resistor

required to IOVDD

SPI: Master output slave input

A5

SCL/MCLK

Digital input

I²C: Clock (input), 2.2 kΩ pullup resistor required

to IOVDD

SPI: Master clock

A6

RSVD1

Reserved

Connect to ground

A7

RSVD2

Reserved

Connect to ground

B1

SYNC

Digital input/output

(I/O)

General purpose I/O, defaults to open drain

output (tristate), 47 kΩ pullup resistor required to

IOVDD

B4

THERMALPAD

Ground

Connect to a ground plane to allow good thermal

conduction

B7

CORE_1V8

Power

1.8 V analog core supply

C1

SPI_I2C_N

Digital input

I²C: Connect to GND with 47 kΩ pulldown

resistor

SPI: Connect to IOVDD with 47 kΩ pullup

resistor

C2

NCS

Digital input

I²C: I²C interface reset pin, active high. Toggle

this pin from 0 to 1, then back to 0 to reset the

I²C slave. 47 kΩ pulldown resistor required to

GND

SPI: Active low chip select. 47 kΩ pullup resistor

required to IOVDD

C3

GND

Ground

Ground

C4

AVDD

Power

3.3 V analog and VCSEL supply

C5

MISO

Digital output

I²C: Do not connect

SPI: Master input slave output. Push-pull driven

to IOVDD level

C6

RSVD3

Reserved

Connect to ground

C7

Ground

Ground

Ground

Note:

The THERMALPAD pin has to be connected to ground (for more information refer to the AN5897).

Note:

All digital signals must be driven to the IOVDD level.

Note:

Toggling the I2C_RST pin resets the sensor I²C communication only. It does not reset the sensor itself. To reset

the sensor, refer to the sensor reset management procedure (UM3109).

VL53L8CX

Device pinout

DS14161 - Rev 2

page 6/42