4.15 External synchronization pin
An external trigger source can be used to synchronize acquisitions. When the external synchronization is
enabled, the VL53L8CX waits for an interrupt on the SYNC pin to start the next acquisition. To use this feature,
the SYNC pin (B1) needs to be connected as described in the product datasheet.
There are no specific requirements for using the external synchronization. However, the VL53L8CX ranging
frequency should be higher than the external signal frequency.
The external synchronization can be enabled or disabled by using the function
vl53l8cx_set_external_sync_pin_enable(). Ranging can be started as usual by using the function
vl53l8cx_start_ranging(). When a user wants to stop the sensor, it is recommended to toggle the SYNC pin
to unpause the VL53L8CX firmware.
A topical flow for using the external synchronization pin is shown below in Section 4.15 External synchronization
pin.
Figure 14. External synchronization flow
UM3109
External synchronization pin
UM3109 - Rev 1
page 14/20
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