For details about CN1 pinning, refer to the Connectors section.
Table 16. 20‑pin audio function I/O interface
PIO Configuration
PE10 SDIN4 (MIC.SDIN4)
PF4 SDIN0 (MIC.SDIN0)
PF3 CCK0 (MIC.CCK0)
PE13 Audio_MEMs_LED (MEMS_LED)
12.8 Time‑of‑Flight sensor
Warning: Refer to Section 4 for a detailed explanation.
The VL53L5CXV0GC/1 is a state‑of‑the‑art, Time‑of‑Flight (ToF), laser‑ranging sensor enhancing the ST
FlightSense product family. It can be used for gesture control as well as for accurate distance measurements.
The device uses an analog power supply of 3.3 V, which starts after the 1.8 V digital supply. The ToF sensor (U7)
is managed with an I
2
C shared with a temperature sensor (up to 400 kHz), an LPN control, and an interrupt line.
The I
2
C read/write address is 0x53/0x52 and can be accessed only if LPN is high. The interrupt line is mapped on
a WKUP PIO.
VL53L5CX contains a laser emitter and corresponding drive circuitry. The laser output is designed to remain
within Class 1 laser safety limits under all reasonably foreseeable conditions including single faults in compliance
with IEC 60825-1:2007 and IEC 60825-1:2014. The laser output power must not be increased by any means and
optics must not be used to focus the laser beam.
Figure 22. Class 1 laser product label
Table 17. ToF sensor I/O interface
PIO
Configuration
PH8 SDA (I2C3.SDA)
PH7 SCL (I2C3.SCL)
PE14 TOF_LPN (ToF_LPN)
PB5 TOF_INTN (ToF_INTN)
UM2967
Time‑of‑Flight sensor
UM2967 - Rev 1
page 34/68
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