mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 357

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC16Y3/916Y3
USER’S MANUAL
NOTES:
EXT PIN (PAI)
1. PHI1 HAS THE SAME FREQUENCY AS THE SYSTEM CLOCK; HOWEVER, IT DOES NOT HAVE THE SAME TIMING.
2. PHI1/4 CLOCKS PACNT WHEN GT-PAIF IS ASSERTED.
3. A = PAI SIGNAL AFTER THE SYNCHRONIZER.
4. B = “A” AFTER THE DIGITAL FILTER.
5. PAIF IS ASSERTED WHEN PAI IS NEGATED.
Figure A-26 Pulse Accumulator — Gated Mode (Count While Pin High)
PHI1/4
PACNT
PHI1
PAEN
PAIF
A
B
1
2
3
4
5
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$77
$78
PULSE ACCUM GATED MODE
MOTOROLA
A-31