Hi,
The MPX5500 is an integrated pressure sensor which means that the sensor is already Temperature Compensated, Calibrated and amplified internally, so the output of the sensor will be from 0 to 5.0V depending on the pressure applied.
The hardware needed to connect it to a MCU is minimal, you can find the recommended connection on Figure 4 of the datasheet: http://cache.freescale.com/files/sensors/doc/data_sheet/MPX5500.pdf
Regards,
Jose