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Kiirendusmoodul GY-291 kolme teljeline IIC SPI

  • Tootekood: ADXL345

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The ADXL345 is a small, thin, ultralow power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface.
The ADXL345 is well suited for mobile device applications. It measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic acceleration resulting from motion or shock. Its high resolution (3.9 mg/LSB) enables measurement of inclination changes less than 1.0°. Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion by comparing the acceleration on any axis with user-set thresholds. Tap sensing detects single and double taps in any direction. Freefall sensing detects if the device is falling. These functions can be mapped individually to either of two interrupt output pins. An integrated, patent pending memory management system with a 32-level first in, first out (FIFO) buffer can be used to store data to minimize host processor activity and lower overall system power consumption.

Low power modes enable intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.The ADXL345 is supplied in a small, thin, 3 mm × 5 mm × 1 mm,14-lead, plastic package.
Power supply:4-6V
I/O voltage range:1.7 V to 3.6V
Communication methods:IIC/SPI
Measuring range:selectable via serial command
Ultralow power:as low as 23 µA
Standby mode power:0.1 µA
User-selectable resolution:yes
Fixed 10-bit resolution:yes
Activity/inactivity monitoring:yes
Free-fall detection:yes
Wide temperature range:−40°C to +85°C
Shock survival:10,000 g
Small and thin:3 mm × 5 mm × 1 mm LGA package

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