XC912BC32CFU8 Motorola Semiconductor Products, XC912BC32CFU8 Datasheet - Page 11
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XC912BC32CFU8
Manufacturer Part Number
XC912BC32CFU8
Description
M68HC12B Family Data Sheet
Manufacturer
Motorola Semiconductor Products
Datasheet
1.XC912BC32CFU8.pdf
(362 pages)
- Current page: 11 of 362
- Download datasheet (5Mb)
M68HC12B Family — Rev. 8.0
MOTOROLA
11.1
11.2
11.2.1
11.2.2
11.2.3
11.2.4
11.2.5
11.2.6
11.2.7
11.2.8
11.2.9
11.2.10
11.2.11
11.2.12
11.2.13
11.2.14
11.2.15
11.3
11.4
11.4.1
11.4.2
11.4.3
12.1
12.2
12.3
12.3.1
12.3.2
12.3.3
12.3.4
12.3.5
12.3.6
12.3.7
12.3.8
12.3.9
12.3.10
12.3.11
12.3.12
12.3.13
12.3.14
12.3.15
12.3.16
12.4
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
PWM Register Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
PWM Boundary Cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Using the Output Compare 7 Feature to Generate a PWM . . . . . . . . . 146
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Timer Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Timer Operation in Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
PWM Clocks and Concatenate Register . . . . . . . . . . . . . . . . . . . . 135
PWM Clock Select and Polarity Register . . . . . . . . . . . . . . . . . . . . 136
PWM Enable Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
PWM Prescale Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
PWM Scale Register 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
PWM Scale Counter 0 Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
PWM Scale Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
PWM Scale Counter 1 Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
PWM Channel Counters 0–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
PWM Channel Period Registers 0–3 . . . . . . . . . . . . . . . . . . . . . . . 142
PWM Channel Duty Registers 0–3 . . . . . . . . . . . . . . . . . . . . . . . . . 143
PWM Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
PWM Special Mode Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Port P Data Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Port P Data Direction Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
PWM Period Calculation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Code Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Timer Input Capture/Output Compare Select Register. . . . . . . . . . 151
Timer Compare Force Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Output Compare 7 Mask Register . . . . . . . . . . . . . . . . . . . . . . . . . 152
Output Compare 7 Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Timer Count Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Timer System Control Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Timer Control Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Timer Interrupt Mask Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Timer Interrupt Flag Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Timer Input Capture/Output Compare Registers . . . . . . . . . . . . . . 158
Pulse Accumulator Control Register. . . . . . . . . . . . . . . . . . . . . . . . 161
Pulse Accumulator Flag Register . . . . . . . . . . . . . . . . . . . . . . . . . . 163
16-Bit Pulse Accumulator Count Register . . . . . . . . . . . . . . . . . . . 163
Timer Test Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Timer Port Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Data Direction Register for Timer Port . . . . . . . . . . . . . . . . . . . . . . 165
Section 11. Pulse-Width Modulator (PWM)
Section 12. Standard Timer Module (TIM)
Table of Contents
Table of Contents
Data Sheet
11
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