MC68HC16R1/916R1
USER’S MANUAL
MOTOROLA
xi
(Continued)
Title
Paragraph
Page
TABLE OF CONTENTS
12.3
12.4
12.4.1
12.4.2
12.4.3
12.4.4
12.5
12.5.1
12.6
12.6.1
12.6.2
12.6.3
12.6.4
12.6.5
12.6.6
12.7
12.7.1
12.7.2
12.7.2.1
12.7.2.2
12.7.3
12.7.4
12.7.5
12.7.6
12.7.7
12.8
12.8.1
12.8.2
12.9
12.9.1
12.9.2
12.10
12.10.1
12.10.2
12.10.3
12.10.4
12.10.5
12.10.6
12.10.7
12.10.8
12.10.9
Time Base Bus System ...........................................................................12-2
Bus Interface Unit Submodule (BIUSM) ..................................................12-3
STOP Effect On the BIUSM ............................................................12-3
Freeze Effect On the BIUSM ...........................................................12-3
LPSTOP Effect on the BIUSM .........................................................12-4
BIUSM Registers .............................................................................12-4
Counter Prescaler Submodule (CPSM) ..................................................12-4
CPSM Registers ..............................................................................12-5
Free-Running Counter Submodule (FCSM) ............................................12-5
FCSM Counter ................................................................................12-6
FCSM Clock Sources ......................................................................12-6
FCSM External Event Counting ......................................................12-7
FCSM Time Base Bus Driver ..........................................................12-7
FCSM Interrupts ..............................................................................12-7
FCSM Registers ..............................................................................12-7
Modulus Counter Submodule (MCSM) ...................................................12-7
MCSM Modulus Latch .....................................................................12-8
MCSM Counter ................................................................................12-8
Loading the MCSM Counter Register .....................................12-9
Using the MCSM as a Free-Running Counter ........................12-9
MCSM Clock Sources .....................................................................12-9
MCSM External Event Counting ......................................................12-9
MCSM Time Base Bus Driver .........................................................12-9
MCSM Interrupts ...........................................................................12-10
MCSM Registers ...........................................................................12-10
Single Action Submodule (SASM) .........................................................12-10
SASM Interrupts ............................................................................12-11
SASM Registers ............................................................................12-12
Double-Action Submodule (DASM) .......................................................12-12
DASM Interrupts ............................................................................12-14
DASM Registers ............................................................................12-14
Pulse-Width Modulation Submodule (PWMSM) ....................................12-14
Output Flip-Flop and Pin ...............................................................12-15
Clock Selection ..............................................................................12-15
PWMSM Counter ..........................................................................12-16
PWMSM Period Registers and Comparator ..................................12-16
PWMSM Pulse-Width Registers and Comparator .........................12-17
PWMSM Coherency ......................................................................12-17
PWMSM Interrupts ........................................................................12-17
PWM Frequency ............................................................................12-18
PWM Pulse Width .........................................................................12-19