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TABLE OF CONTENTS (Continued)
Paragraph
Number
Title
Page
Number
Appendix A
MC68HC2681
A.1
A.1.1
A.1.2
A.2
A.2.1
A.2.2
A.2.3
A.2.4
A.2.5
A.2.6
A.3
A.4
A.4.1
A.4.2
A.4.3
A.4.4
A.4.4.1
A.4.4.2
A.4.4.3
A.4.4.4
A.4.4.5
A.4.4.6
A.4.4.7
A.5
A.5.1
A.5.2
A.5.3
A.5.4
A.5.5
A.5.6
Introduction ......................................................................................... A-1
Interrupt Control Logic.............................................................. A-1
Input Port.................................................................................. A-1
Signal Description ................................................................................ A-1
Reset (RESET)......................................................................... A-4
Chip-Select (CS) ...................................................................... A-4
Write Strobe (W)....................................................................... A-4
Read Strobe (R) ....................................................................... A-4
Parallel Input 6 (IP6)................................................................. A-4
Parallel Input 2 (IP2)................................................................. A-4
Programming and Register Description .............................................. A-4
Electrical Specifications ...................................................................... A-6
Absolute Maximum Ratings...................................................... A-6
Thermal Characteristics ........................................................... A-6
DC Electrical Characteristics.................................................... A-6
AC Electrical Characteristics .................................................... A-7
Clock Timing ................................................................. A-7
RESET Timing .............................................................. A-8
Bus Timing..................................................................... A-8
Port Timing ................................................................... A-9
Interrupt Reset Timing ................................................. A-9
Transmitter Timing....................................................... A-10
Receiver Timing.......................................................... A-10
Mechanical Data and Ordering Information ....................................... A-14
Pin Assignment—44 Pin Plastic Leaded Chip Carrier.............. A-14
FN Suffix Ordering Information................................................. A-14
FN Suffix Packaging Dimensions ............................................. A-15
Pin Assignment—40 Pin Dual-In Line Plastic Package............ A-16
P Suffix Ordering Information ................................................... A-16
Packaging Dimensions—Plastic............................................... A-17
Index
MOTOROLA
MC68HC681 USER’S MANUAL
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