| Pin | Mnemonic | Description |
|---|---|---|
| X | X-axis | This is the analog signal out along the X-axis |
| Y | Y-axis | This is the analog signal out along the Y-axis |
| Z | X-axis | This is the analog signal out along the Z-axis |
| SL | Sleep | This pin will put the chip to sleep when pulled low to consume less power and will resume operation when pulled high. |
| 0G | 0g detect | This pin will go high when 0g is detected on all 3 axis. Useful to detect free fall |
| 5V | 5v in | This pin is attached to a built in regulator that will bring the 5v down to the 3.3v that the chip is required to run on. |
| 3V3 | 3.3v in | This pin bypasses the regulator for 5v in for those who have a preregulated 3.3v bus. |
| GND | Ground | This pin must be connected to the ground of the circuit. |
| GS | Sense select | This pin is used to select between the two sensitivities. If this pin is low it is in 1.5g mode. When high, it switches to 6g mode. |
| ST | Self-test | This chip has a built in self-test to verify that both the mechanical and electrical bits inside the chip are functioning properly. To use the selftest feature, hold the module upside down to put a force of -1g on the Z-axis. The self-test then applies an electrostatic force which deflects the Z-axis which would then read +1g. Useful also for calibration |
Last active
May 1, 2016 13:55
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