MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor B-1
Appendix B
Calibration
B.1 Overview
The MPC5500 family of microcontrollers includes various specialized features to support automotive
calibration. Many of these calibration features are not intended to be available for use by the final
application software, and some MPC5500 devices support calibration signals that are not available in the
standard 208, 324, and 416 BGA packages. Special calibration assembled devices with increased signal
bond out are used to provide full access to all calibration resources for most MPC5500 variants.
Calibration hardware that makes use of these calibration assembled devices is detailed in Figure B-1.
Freescale-produced “VertiCal bases” use the calibration-assembled MPC5500 device mounted on a small
circuit board with a footprint which is compatible with that of the production BGA packaged MPC5500
device. A 156 way “VertiCal connector” on the top side of the VertiCal base allows VertiCal compliant
“top board” hardware to be attached. Various types of top board hardware to support calibration and debug
is available from Freescale and 3
rd
parties.
The VertiCal connector standard defines a set of signals that are used for communication between the
microcontroller on the VertiCal base board and any attached calibration tools or “top boards”. There are
some differences in signal availability or sourcing for the VertiCal connector depending on the MPC5500
device variant being used.
The calibration system is illustrated in Figure B-1 and the VertiCal Base is illustrated in Figure B-2.
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