I decided to use the Memsic 2125 to measure tilt after
researching some other accelerometers but I have some
questions if anyone else is familiar with this
product. I am using a ccp pin on a 16F73 to measure
the duty cycle of the pwm signal. I am using the
formula from the data sheet to calculate the
acceleration in g's.

A(g) = ((T1/T2) - 0.5) / .2

Here are the values I am reading with the pic:

     90deg    0deg    90deg
T1   6.2ms    4.94ms  3.72ms
T2   9.96ms   9.96ms  9.96ms
A(g) .62      ~0      .63

Shouldn't I be reading 1g when the accelerometer is 90
degrees with respect to gravity? Anyone have any ideas
why I am not getting this? I am pretty sure I read the
formula correctly and I am confused. Thanks

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