MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 437

• 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

MPC555
USER’S MANUAL
QCLK is also the input to a 17-stage binary divider which implements the periodic/in-
terval timer. To retain the specified analog conversion accuracy, the QCLK frequency
(FQCLK) must be within a specified tolerance. See
CHARACTERISTICS.
Before using the QADC64, the software must initialize the prescaler with values that
put the QCLK within the specified range. Though most software applications initialize
the prescaler once and do not change it, write operations to the prescaler fields are
permitted.
/
MPC556 QUEUED ANALOG-TO-DIGITAL CONVERTER MODULE-64
For software compatibility with earlier versions of QADC64, the defi-
nition of PSL, PSH, and PSA have been maintained. However, the
requirements on minimum time and minimum low time no longer ex-
ist.
A change in the prescaler value while a conversion is in progress is
likely to corrupt the result from any conversion in progress. There-
fore, any prescaler write operation should be done only when both
queues are in the disabled modes.
Rev. 15 October 2000
CAUTION
NOTE
APPENDIX G ELECTRICAL
MOTOROLA
13-25