The triple axis accelerometer breakout board from Adafruit is 5V ready to interface module.
Thus it can be used with any micorcontroller with 5V I/O level e.g. Arduino, ATmega8, ATmega32 etc
This breakout board comes with 3 analog outputs for X, Y and Z axis.
The analog outputs are ratiometric: that means that 0g measurement output is always at half of the 3.3V output (1.65V), -3g is at 0v and 3g is at 3.3V with full scaling in between.