VL53L1CBV0FY-1 Detailed explanation of pin function specifications and circuit principle instructions

The model " VL53L1CBV0FY/1 " corresponds to the VL53L1X Time-of-Flight (ToF) sensor from STMicroelectronics. It is part of the VL53L1X family, designed for high-precision distance measurement with long-range capabilities. This sensor is frequently used in applications like robotics, drones, and other systems requiring accurate and non-contact distance measurement.

Package and Pin Functions

The VL53L1X sensor typically comes in a QFN-24 package, which is a 24-pin Quad Flat No-lead package.

Here is the breakdown of the pins, including detailed functions and descriptions for each pin in the QFN-24 package:

Pin Number Pin Name Pin Function 1 VDD Power supply input. Voltage range: 2.6V to 3.5V. 2 GND Ground connection. 3 SDA I2C Data line for communication (bi-directional). 4 SCL I2C Clock line for communication. 5 XSHUT Shutdown pin for putting the sensor in low power mode (active low). 6 GPIO1 General-purpose input/output (GPIO) pin. This pin can be used for various functions (interrupt, signal processing, etc.). 7 GPIO2 General-purpose input/output (GPIO) pin. Similar to GPIO1, it can be used for various purposes. 8 I2C_ADDR I2C address selection pin. This pin determines the I2C address of the sensor, typically used for multiple devices on the same I2C bus. 9 IRQ Interrupt request pin. The sensor can send an interrupt signal to the microcontroller when a particular event occurs (like distance measurement completion). 10 NC No connection. 11 NC No connection. 12 VDDIO Power supply for I/O. Can be configured to operate at different voltage levels depending on the interface . 13 VDD Power supply input for the sensor. 14 GND Ground connection. 15 VDD Power supply input for the sensor. 16 GND Ground connection. 17 NC No connection. 18 NC No connection. 19 NC No connection. 20 NC No connection. 21 NC No connection. 22 NC No connection. 23 NC No connection. 24 NC No connection. Key Pins Explained: VDD (Pins 1, 12, 13, 15): These are the power supply pins for the sensor and I/O. They provide the necessary voltage for the internal circuitry of the sensor. GND (Pins 2, 14, 16): Ground connections that complete the circuit. SDA (Pin 3) and SCL (Pin 4): The data (SDA) and clock (SCL) lines are part of the I2C interface used to communicate with the sensor. They allow data transfer between the microcontroller and the sensor. XSHUT (Pin 5): Used to put the sensor into low-power mode or to reset it. A low signal on this pin shuts down the sensor. GPIO1 and GPIO2 (Pins 6, 7): These are configurable general-purpose I/O pins that can be used for a variety of functions such as triggering interrupts or monitoring certain events. IRQ (Pin 9): The interrupt pin, which can alert the microcontroller to an event such as the completion of a measurement. I2C_ADDR (Pin 8): Used to configure the I2C address for the device when multiple devices are present on the same I2C bus.

FAQ: 20 Common Questions about the VL53L1CBV0FY/1

Q: What is the power supply voltage range for the VL53L1CBV0FY/1? A: The VL53L1CBV0FY/1 operates within a power supply voltage range of 2.6V to 3.5V.

Q: Can I use the sensor with a 5V power supply? A: No, the VL53L1CBV0FY/1 requires a supply voltage between 2.6V and 3.5V. Exceeding this range could damage the sensor.

Q: How do I interface with the VL53L1CBV0FY/1? A: You can interface with the sensor using the I2C bus, utilizing the SDA and SCL pins for communication.

Q: What does the XSHUT pin do? A: The XSHUT pin is used to shut down the sensor or reset it by pulling the pin low.

Q: What is the function of the IRQ pin? A: The IRQ pin provides an interrupt signal to the microcontroller when an event, such as distance measurement completion, occurs.

Q: How do I set the I2C address of the VL53L1CBV0FY/1? A: The I2C address can be set using the I2C_ADDR pin.

Q: How many GPIO pins are available on the VL53L1CBV0FY/1? A: There are two general-purpose I/O pins (GPIO1 and GPIO2) available for use.

Q: Can the sensor be used in a multi-device configuration? A: Yes, by using the I2C_ADDR pin to select different I2C addresses, multiple sensors can be used on the same I2C bus.

Q: What type of output does the VL53L1CBV0FY/1 provide? A: The output of the sensor is a distance measurement, which can be read via I2C communication.

Q: Can the sensor measure distances in both indoor and outdoor environments? A: Yes, the VL53L1CBV0FY/1 can measure distances accurately in both indoor and outdoor environments, though performance may vary due to ambient lighting.

Q: How do I enter low power mode on the sensor? A: To enter low power mode, the XSHUT pin should be pulled low.

Q: What is the maximum distance range of the VL53L1CBV0FY/1? A: The VL53L1CBV0FY/1 can measure distances up to 4 meters under optimal conditions.

Q: How precise is the VL53L1CBV0FY/1 in measuring distance? A: The sensor offers high precision with a typical accuracy of ±3% for distances up to 2 meters.

Q: What is the sensor's default I2C address? A: The default I2C address of the VL53L1CBV0FY/1 is 0x29.

Q: Is there any calibration required before using the sensor? A: The VL53L1CBV0FY/1 is factory calibrated for out-of-the-box use, though some fine-tuning may be needed for specific applications.

Q: Can the VL53L1CBV0FY/1 detect multiple objects? A: The sensor is designed for single object distance measurement. For multi-object detection, a more complex setup or sensor array is required.

Q: What is the maximum measurement rate of the sensor? A: The VL53L1CBV0FY/1 can take measurements at a rate of up to 50Hz in continuous mode.

Q: Does the sensor require special drivers or software libraries? A: Yes, STMicroelectronics provides software libraries and drivers to interface with the VL53L1CBV0FY/1 via I2C.

Q: How should I handle the GPIO pins? A: The GPIO pins should be configured appropriately depending on your application, and can be used for interrupts, outputs, or other control functions.

Q: Can I use the VL53L1CBV0FY/1 in a battery-powered system? A: Yes, the sensor is energy efficient and can be used in battery-powered systems with proper power management.

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