mc68hc908mr24 Freescale Semiconductor, Inc, mc68hc908mr24 Datasheet - Page 135
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mc68hc908mr24
Manufacturer Part Number
mc68hc908mr24
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908MR24.pdf
(406 pages)
- Current page: 135 of 406
- Download datasheet (3Mb)
Advance Information — MC68HC908MR24
9.1 Contents
MC68HC908MR24 — Rev. 4.1
Freescale Semiconductor
Section 9. Pulse-Width Modulator for Motor Control
9.2
9.3
9.4
9.4.1
9.4.2
9.5
9.5.1
9.5.2
9.6
9.6.1
9.6.2
9.6.3
9.6.4
9.6.5
9.7
9.7.1
9.7.1.1
9.7.1.2
9.7.1.3
9.7.2
9.7.3
9.8
9.9
Pulse-Width Modulator for Motor Control (PWMMC)
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Timebase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
PWM Generators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Fault Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Initialization and the PWMEN Bit . . . . . . . . . . . . . . . . . . . . . . 171
PWM Operation in Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . 172
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
Prescaler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Load Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143
PWM Data Overflow and Underflow Conditions. . . . . . . . . 148
Selecting Six Independent PWMs
Dead-Time Insertion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Top/Bottom Correction with Motor Phase
Output Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
PWM Output Port Control. . . . . . . . . . . . . . . . . . . . . . . . . . 160
Fault Condition Input Pins . . . . . . . . . . . . . . . . . . . . . . . . . 166
Software Output Disable . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Output Port Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
Fault Pin Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
or Three Complementary PWM Pairs . . . . . . . . . . . . . . 148
Current Polarity Sensing . . . . . . . . . . . . . . . . . . . . . . . . 154
Advance Information
(PWMMC)
135
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