M68HC16 Z SERIES
ELECTRICAL CHARACTERISTICS
USER’S MANUAL
A-55
Figure A-26 Pulse Accumulator — Gated Mode (Count While Pin High)
$77
$78
NOTES:
3. A = PAI SIGNAL AFTER THE SYNCHRONIZER.
4. B = “A” AFTER THE DIGITAL FILTER.
2. PHI1/4 CLOCKS PACNT WHEN GT-PAIF IS ASSERTED.
5. PAIF IS ASSERTED WHEN PAI IS NEGATED.
1. PHI1 HAS THE SAME FREQUENCY AS THE SYSTEM CLOCK; HOWEVER, IT DOES NOT HAVE THE SAME TIMING.
PAIF
5
PULSE ACCUM GATED MODE
PACNT
B
4
A
3
EXT PIN (PAI)
PAEN
PHI1/4
2
PHI1
1
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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