The model "ADXL355BEZ" is from Analog Devices, a well-known brand specializing in analog, mixed-signal, and digital signal processing components. This specific part is an accelerometer designed for sensing acceleration in various applications. Now, I'll provide a detailed explanation about the pin functions, package type, pinout table, usage guidelines, and an FAQ related to the part.
1. Package Type
The "ADXL355BEZ" part comes in a LGA (Land Grid Array) package with 16 pins. This is commonly used for compact, low-profile applications with a high pin density.
2. Pin Function Specifications and Detailed Pinout List
Here’s a breakdown of the 16 pins and their functions for the ADXL355BEZ:
Pin Number Pin Name Pin Function 1 VDD Power Supply Pin. This pin connects to the positive power supply (typically 3.3V) to provide the necessary power to the accelerometer. 2 GND Ground Pin. This pin is the reference ground for the device. It connects to the system ground. 3 SDA Serial Data Pin. This is the data line for the I2C communication interface . It transmits data between the device and the microcontroller or host processor. 4 SCL Serial Clock Pin. This is the clock line for the I2C communication interface, dictating the timing of data transmission between the device and the processor. 5 CS Chip Select Pin. This is an active low pin used to select the device for SPI communication. When low, the device listens for SPI commands. 6 SDO Serial Data Output Pin. This pin is used to output data during SPI communication. 7 INT1 Interrupt Pin 1. This pin outputs interrupt signals based on pre-programmed thresholds. 8 INT2 Interrupt Pin 2. This pin serves a similar function to INT1, allowing for another interrupt signal to indicate various conditions, such as data ready or error. 9 VDDIO IO Voltage Pin. This pin provides the voltage for the I/O interface, separate from the main power supply. 10 AOUT Analog Output Pin. This pin outputs the analog voltage corresponding to the acceleration detected on the sensor. 11 VREF Reference Voltage Pin. This pin provides the reference voltage for the internal ADC of the device. 12 PS1 Power Select Pin 1. This pin allows for control of different low-power modes for the accelerometer. 13 PS2 Power Select Pin 2. Similar to PS1, this pin allows for additional power-saving configuration. 14 RESET Reset Pin. This pin is used to reset the device to its default state when pulled low. 15 NC No Connection Pin. This pin is not connected to any internal circuit of the device and can be left unconnected. 16 NC No Connection Pin. Another unconnected pin, which should be left open.3. Pin Function Descriptions
VDD (Pin 1): This pin powers the accelerometer. You must connect it to a 3.3V supply for proper operation. GND (Pin 2): The ground pin is the reference for all voltages in the system and connects to the circuit’s ground. SDA (Pin 3): The serial data line for the I2C communication. Use it to send and receive data between the accelerometer and a microcontroller or other I2C-compatible device. SCL (Pin 4): The serial clock line for the I2C bus. This line synchronizes the data transmission between the devices. CS (Pin 5): For SPI communication, you will use this pin to select the device. The chip is enabled when the CS pin is driven low. SDO (Pin 6): The serial data output line in SPI mode. It outputs the result of the measurement or configuration data. INT1 (Pin 7): This is an interrupt pin that can be configured to signal when a specific event occurs, such as reaching an acceleration threshold. INT2 (Pin 8): Like INT1, it can also generate interrupts for other conditions, such as data-ready or error signals. VDDIO (Pin 9): A separate pin that powers the I/O logic, typically supplied with the same voltage as VDD. AOUT (Pin 10): This is the analog output of the accelerometer, which provides a voltage proportional to the detected acceleration. VREF (Pin 11): This pin provides a stable reference voltage for the device’s internal analog-to-digital converter (ADC). PS1 (Pin 12): Used for controlling the power mode of the device. You can reduce power consumption by setting the device in a low-power state. PS2 (Pin 13): Another power control pin to manage low-power operation. RESET (Pin 14): When pulled low, this pin resets the accelerometer. NC (Pins 15, 16): These are not connected internally. They do not have any function and can be left open.4. 20 Frequently Asked Questions (FAQ)
Q1: What voltage is required for the ADXL355BEZ to operate? A1: The ADXL355BEZ operates on a supply voltage of 3.3V (VDD).
Q2: How is the ADXL355BEZ configured for I2C communication? A2: To configure I2C, connect the SDA and SCL pins to the corresponding I2C lines of your microcontroller.
Q3: How do I configure the interrupt pins (INT1 and INT2)? A3: The interrupt pins are configurable through the device’s registers for specific events, like threshold crossing.
Q4: What should I connect to the VDDIO pin? A4: The VDDIO pin should be connected to the same 3.3V supply as the VDD pin to ensure proper logic voltage levels for communication.
Q5: Can I use the ADXL355BEZ in SPI mode? A5: Yes, you can configure the ADXL355BEZ to use SPI mode by setting the CS pin low and using the SDO and SDI pins for communication.
Q6: How do I reset the ADXL355BEZ? A6: To reset the device, pull the RESET pin low for a short period.
Q7: What does the AOUT pin output? A7: The AOUT pin provides an analog voltage proportional to the acceleration sensed by the device.
Q8: How do I manage the power modes of the ADXL355BEZ? A8: Use the PS1 and PS2 pins to control the power mode, including low-power and active states.
Q9: Is the ADXL355BEZ capable of measuring multiple axes? A9: Yes, the ADXL355BEZ can measure acceleration in the X, Y, and Z axes.
Q10: What is the purpose of the VREF pin? A10: The VREF pin provides a stable reference voltage for the ADC to convert the analog acceleration signal to a digital output.
Q11: What does the INT1 pin signal? A11: INT1 signals when a pre-programmed event, such as a threshold crossing, occurs.
Q12: How do I read the output from the ADXL355BEZ? A12: You can read the output data using either I2C or SPI communication protocols, depending on your setup.
Q13: What are the power requirements of the ADXL355BEZ? A13: The ADXL355BEZ operates at a voltage of 3.3V with low power consumption in idle modes.
Q14: How do I connect the ADXL355BEZ to a microcontroller? A14: You can connect the ADXL355BEZ using