
MOTOROLA
iv
CTM
REFERENCE
TABLE OF CONTENTS
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Paragraph
Number
Page
Number
Title
8.6
8.6.1
8.6.2
8.6.3
8.7
8.7.1
8.7.2
8.7.3
8.7.4
DASM registers .....................................................................................................8-13
DASMSIC — DASM status/interrupt/control register ......................................8-14
DASMA — DASM data register A....................................................................8-18
DASMB — DASM data register B....................................................................8-18
DASM examples....................................................................................................8-20
IC mode example.............................................................................................8-20
IPM mode example..........................................................................................8-21
OCB mode example.........................................................................................8-22
PWM mode example........................................................................................8-24
9
PULSE WIDTH MODULATION SUBMODULE
(PWMSM)
9.1
9.2
9.2.1
9.2.2
9.2.3
9.2.4
9.2.5
9.2.5.1
9.2.6
9.2.7
9.2.8
9.3
9.3.1
9.3.2
9.3.3
9.4
9.4.1
9.4.2
9.4.3
9.4.4
PWMSM features ..................................................................................................9-1
PWMSM description..............................................................................................9-2
Output flip-flop and pin.....................................................................................9-2
Clock selection.................................................................................................9-2
The PWMSM counter (PWMC)........................................................................9-3
PWMSM period registers and comparator.......................................................9-4
PWMSM pulse width registers and comparator...............................................9-4
0% and 100% ‘pulses’................................................................................9-5
PWMSM coherency.........................................................................................9-5
PWMSM interrupts...........................................................................................9-6
Freeze action on the PWMSM.........................................................................9-6
PWM frequency, pulse width and resolution..........................................................9-6
PWM frequency ...............................................................................................9-7
PWM pulse width.............................................................................................9-7
PWM period and pulse width register values...................................................9-8
PWMSM register map and registers......................................................................9-9
PWMSIC — Status, interrupt and control register ...........................................9-9
PWMA — PWM period register.......................................................................9-12
PWMB — PWM pulse width register ...............................................................9-13
PWMC — PWM counter register.....................................................................9-14
10
ELECTRICAL SPECIFICATIONS
10.1
10.2
10.3
10.4
FCSM and MCSM timing information..................................................................10-1
SASM timing
information.............................................................................................................10-6
DASM timing information.....................................................................................10-9
PWMSM timing information.................................................................................10-12
F
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Freescale Semiconductor, Inc.