VL53L1 Datasheet PDF – Time-of-Flight Sensor – ST

Part Number: VL53L1

Function: Long distance ranging Time-of-Flight sensor based on ST’s FlightSense technology

Package: Optical LGA12 with liner Type

Manufacturer: STMicroelectronics


VL53L1 datasheet sensor


The VL53L1 is a state-of-the-art, Time-of-Flight (ToF), laser-ranging sensor, enhancing the ST FlightSense product family. It is the fastest miniature ToF sensor on the market with accurate ranging up to 4 m and fast ranging frequency up to 50 Hz Housed in a miniature and reflowable package, it integrates a SPAD receiving array, a 940 nm invisible Class1 laser emitter, physical infrared filters, and optics to achieve the best ranging performance in various ambient lighting conditions with a range of cover window options.

VL53L1 pinout

1. AVDDVCSEL Supply VCSEL supply, to be connected to main supply
2. AVSSVCSEL Ground VCSEL ground, to be connected to main ground
3. GND Ground To be connected to main ground
4. GND2 Ground To be connected to main ground
5. XSHUT Digital input Xshutdown pin, active low
6. GND3 Ground To be connected to main ground
7. GPIO1 Digital output Interrupt output. Open drain output
8. DNC Digital input Do not connect, must be left floating
9. SDA Digital input/output I2C serial data
10. SCL Digital input I2C serial clock input
11. AVDD Supply Supply, to be connected to main supply
12. GND4 Ground To be connected to main ground


1. Fully integrated miniature module
– Size: 4.9×2.5×1.56 mm
– Emitter: 940 nm invisible laser (Class1)
– SPAD (single photon avalanche diode) receiving array with integrated lens
– Low-power microcontroller running advanced digital firmware

2. Pin-to-pin compatible with the VL53L0X FlightSense ranging sensor


• User detection (Autonomous low-power mode) to power on/off and lock/unlock devices like
personal computers/laptops and the IoT
• Service robots and vacuum cleaners (long distance and fast obstacle detection)
• Drones (landing assistance, hovering, ceiling detection)
• Smart shelves and vending machines (goods inventory monitoring)


VL53L1 Datasheet


Other data sheets are available within the file: VL53L1CXV0FY/1

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ISL12021 Datasheet – Real Time Clock – Intersil

Part Number: ISL12021

Function: Real Time Clock

Package: TSSOP 14 Pin Type

Manufacturer: Intersil


ISL12021 datasheet



The ISL12021 device is a low power real time clock with an embedded Temp sensor for oscillator compensation, clock/calendar, power fail, low battery monitor, brown out indicator, single periodic or polled alarms, intelligent battery backup switching and 128 bytes of battery-backed user SRAM. The oscillator uses an external, low-cost 32.768kHz crystal. The real time clock tracks time with separate registers for hours, minutes, and seconds.


1. Real Time Clock/Calendar
– Tracks Time in Hours, Minutes and Seconds
– Day of the Week, Day, Month and Year

2. On-chip Oscillator Compensation Over the Operating Temp Range
– ±5ppm over -20°C to +70°C

3. Day Light Saving Time

– Customer Programmable

4. Separate FOUT pin
– 15 Selectable Frequency Outputs


1. Utility Meters

2. POS Equipment

3. Medical Application

4. Security Related Application

5. Vending Machine

Other data sheets are available within the file: ISL12021CVZ


ISL12021 Datasheet PDF Download

ISL12021 pdf