Product Parameters
Working voltage: 3V-5V
Communication interface: I2C interface
12 bit and 8-bit digital outputs
Product Introduction
MMA8452 is a 12 bit resolution sensitivity and low-power digital three-axis acceleration sensor module, with optional full range of ± 2g, ± 4g, and ± 8g. It can be configured with two interrupt pins and can be used for mobile devices to recognize device tilt direction and free fall motion detection. It can communicate and collect data through I2C interface and microcontroller.
Product Functions
| PIN | 引腳 PIN | 功能說明 Function Description |
| 1 | VCC_IN | 電源正極(3.3v-5v) Positive pole of power supply (3.3v-5V) |
| 2 | 3.3V | 電源正極 3.3v Positive pole of power supply 3.3v |
| 3 | GND | 電源負極 Negative pole of power supply |
| 4 | SCL | IIC 總線時鐘信號 IIC bus clock signal |
| 5 | SDA | IIC 總線數(shù)據(jù)信號 IIC bus data signal |
| 6 | SAO | I2C地址選擇(0x1C或0x1D) I2C Address Selection (0x1C or 0x1D) |
| 7 | INT2 /INT1 | 外部中斷 External interrupt |
I2C Address Setting
The default I2C address of the module is 0x1C. To change the address, connect the SA0 pin to a high level (3.3V) and change the address to 0x1D
Using Arduino IDE version 1.6.5
Upload the routine to the development board and open the serial monitor, baud rate: 9600
View - Read acceleration value - as shown in the figure below
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