MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 869

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

E.1 INTRODUCTION
MPC555 / MPC556
USER’S MANUAL
The MPC555 / MPC556 built-in PLL, oscillator, and other analog and sensitive circuits,
require that the board design follow special layout guidelines to ensure proper opera-
tion of the chip clocks. This appendix describes how the clock supplies and external
components should be connected in the board. These guidelines must be fulfilled to
reduce switching noise which is generated on internal and external buses during op-
eration. Any noise injected into the sensitive clock and PLL logic reduces clock perfor-
mance. The USIU maintains a PLL loss-of-lock warning indication that can be used to
determine the clock stability in the MPC555 / MPC556.
CLOCK AND BOARD GUIDELINES
CLOCK AND BOARD GUIDELINES
Rev. 15 October 2000
APPENDIX E
MOTOROLA
E-1