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MC68HC11P2
MOTOROLA
i
TABLE OF CONTENTS
Paragraph
Number
Page
Number
Title
TABLE OF CONTENTS
1
INTRODUCTION
1.1
Features.................................................................................................................1-1
2
PIN DESCRIPTIONS
2.1
VDD and VSS ........................................................................................................2-2
2.2
RESET...................................................................................................................2-3
2.3
Crystal driver and external clock input (XTAL, EXTAL)..........................................2-4
2.4
E clock output (E) ..................................................................................................2-5
2.5
Phase-locked loop (XFC, VDDSYN) ......................................................................2-5
2.5.1
Synchronization of PLL with subsystems.........................................................2-6
2.5.2
Changing the PLL frequency ...........................................................................2-6
2.5.3
PLL registers....................................................................................................2-7
2.5.3.1
PLLCR — PLL control register ...................................................................2-7
2.5.3.2
SYNR — Synthesizer program register......................................................2-9
2.6
Interrupt request (IRQ) ..........................................................................................2-10
2.7
Nonmaskable interrupt (XIRQ/VPPE)....................................................................2-10
2.8
MODA and MODB (MODA/LIR and MODB/VSTBY) .............................................2-10
2.9
VRH and VRL ........................................................................................................2-11
2.10
PG7/R/W ...............................................................................................................2-11
2.11
Port signals ............................................................................................................2-12
2.11.1
Port A ...............................................................................................................2-12
2.11.2
Port B ...............................................................................................................2-12
2.11.3
Port C ...............................................................................................................2-13
2.11.4
Port D ...............................................................................................................2-14
2.11.5
Port E ...............................................................................................................2-14
2.11.6
Port F ...............................................................................................................2-14
2.11.7
Port G...............................................................................................................2-15
2.11.8
Port H ...............................................................................................................2-15