MOTOROLA
vi
MC68HC16R1/916R1
USER’S MANUAL
(Continued)
Title
Paragraph
Page
TABLE OF CONTENTS
5.5.1.5
5.5.1.6
5.5.1.7
5.5.1.8
5.5.1.9
5.5.1.10
5.5.1.11
5.5.2
5.5.3
5.5.4
5.5.5
5.6
5.6.1
5.6.2
5.6.2.1
5.6.2.2
5.6.3
5.6.4
5.6.4.1
5.6.4.2
5.6.5
5.6.5.1
5.6.5.2
5.6.5.3
5.6.6
5.6.6.1
5.7
5.7.1
5.7.2
5.7.3
5.7.3.1
5.7.3.2
5.7.3.3
5.7.3.4
5.7.3.5
5.7.3.6
5.7.3.7
5.7.3.8
5.7.4
5.7.5
5.7.5.1
Read/Write Signal ...................................................................5-25
Size Signals ............................................................................5-25
Function Codes .......................................................................5-25
Data Size Acknowledge Signals .............................................5-25
Bus Error Signal ......................................................................5-26
Halt Signal ...............................................................................5-26
Autovector Signal ....................................................................5-26
Dynamic Bus Sizing ........................................................................5-26
Operand Alignment .........................................................................5-28
Misaligned Operands ......................................................................5-28
Operand Transfer Cases .................................................................5-28
Bus Operation .........................................................................................5-29
Synchronization to CLKOUT ...........................................................5-30
Regular Bus Cycle ...........................................................................5-30
Read Cycle ..............................................................................5-31
Write Cycle ..............................................................................5-31
Fast Termination Cycles ..................................................................5-32
CPU Space Cycles ..........................................................................5-33
Breakpoint Acknowledge Cycle ...............................................5-34
LPSTOP Broadcast Cycle .......................................................5-35
Bus Exception Control Cycles .........................................................5-36
Bus Errors ...............................................................................5-37
Double Bus Faults ...................................................................5-38
Halt Operation .........................................................................5-38
External Bus Arbitration ...................................................................5-39
Show Cycles ...........................................................................5-40
Reset .......................................................................................................5-41
Reset Exception Processing ...........................................................5-41
Reset Control Logic .........................................................................5-42
Operating Configuration Out of Reset .............................................5-42
Address and Data Bus Pin Functions .....................................5-43
Data Bus Mode Selection ........................................................5-44
16-Bit Expanded Mode ............................................................5-46
8-Bit Expanded Mode ..............................................................5-48
Single-Chip Mode ....................................................................5-49
Clock Mode Selection .............................................................5-50
Breakpoint Mode Selection .....................................................5-50
Emulation Mode Selection ......................................................5-50
MCU Module Pin Function During Reset ........................................5-51
Pin State During Reset ....................................................................5-52
Reset States of SCIM2 Pins ....................................................5-53