MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 876

• 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.4.2 Grounding/Guarding
MPC555 / MPC556
USER’S MANUAL
The voltage to the VDDSYN pin should be well regulated and the pin should be pro-
vided with an extremely low impedance path from the VDDSYN filter to the VDDSYN
pad.
The VSSSYN pin should be provided with an extremely low impedance path in the
board. All the filters for the supplies should be located as close as possible to the chip
package. It is recommended to design individual VSSSYN plane to improve VSSSYN
quietness.
The traces from the oscillator pins and PLL pins of the MPC555 / MPC556 should be
guarded from all other traces to reduce crosstalk. It can be provided by keeping other
traces away from the oscillator circuit and placing a ground plane around the compo-
nents and traces.
CLOCK AND BOARD GUIDELINES
Rev. 15 October 2000
MOTOROLA
E-8