iMEMS semiconductor technology integrates micro-mechanical structures and electronic circuits on the same chip. iMEMS acceleration sensors use this technology to measure single-axis, dual-axis or even three-axis acceleration and generate analog or digital output. iMEMS acceleration sensors can be used to measure acceleration, or detect motion states such as tilt, impact, vibration, etc., helping to realize a variety of applications in the fields of industry, medical care, communications, consumer electronics, and automobiles. Depending on the application, the measurement range of the acceleration sensor ranges from a few g to tens of g. Digital output accelerometers also integrate multiple interrupt modes. These features can provide users with more convenient and flexible solutions.
This reference design is based on Analog Devices' ADXL345 and implements a series of typical applications of acceleration sensors, including: pedometer, flash message, hard drive drop protection, human fall protection, inclination measurement, rotation detection, shaking detection, single-click and double-click detection As well as other intelligent detection functions and game control functions, etc.
ADXL345: Three-axis digital output iMEMS acceleration sensor
• ±2, ±4, ±8, ±16g variable measurement range
• Up to 13bit resolution, fixed 4mg/LSB sensitivity
• 3mm*5mm*1mm ultra-small package
• 23 to 140uA ultra-low operating power consumption, sleep state power consumption as low as 0.1uA
• Standard I2C or SPI digital interface
• 32-level FIFO storage
• Built-in multiple motion status detection functions and flexible interrupt methods
The complete information includes the following content:
1. User manual: Typical application of acceleration sensor ADXL345
2. Demonstration software installation file
3. MCU firmware file
4. Hardware schematic diagram and PCB layout
5. Other related tools: ARMWSD- ADuC7xxx series serial port download device
Blockdiagram
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