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MC68HC908MR24 Datasheet(PDF) 10 Page - Freescale Semiconductor, Inc |
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MC68HC908MR24 Datasheet(HTML) 10 Page - Freescale Semiconductor, Inc |
10 / 406 page Advance Information MC68HC908MR24 — Rev. 4.1 10 Table of Contents Freescale Semiconductor Table of Contents 9.6 Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 9.6.1 Selecting Six Independent PWMs or Three Complementary PWM Pairs . . . . . . . . . . . . . . . . . . . . . 148 9.6.2 Dead-Time Insertion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 9.6.3 Top/Bottom Correction with Motor Phase Current Polarity Sensing . . . . . . . . . . . . . . . . . . . . . . . . 154 9.6.4 Output Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159 9.6.5 PWM Output Port Control. . . . . . . . . . . . . . . . . . . . . . . . . . 160 9.7 Fault Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 9.7.1 Fault Condition Input Pins . . . . . . . . . . . . . . . . . . . . . . . . . 166 9.7.1.1 Fault Pin Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 9.7.1.2 Automatic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 9.7.1.3 Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 9.7.2 Software Output Disable . . . . . . . . . . . . . . . . . . . . . . . . . . 170 9.7.3 Output Port Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 9.8 Initialization and the PWMEN Bit . . . . . . . . . . . . . . . . . . . . . . 171 9.9 PWM Operation in Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . 172 9.10 Control Logic Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173 9.10.1 PWM Counter Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . 173 9.10.2 PWM Counter Modulo Registers . . . . . . . . . . . . . . . . . . . . 174 9.10.3 PWM X Value Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . 175 9.10.4 PWM Control Register 1. . . . . . . . . . . . . . . . . . . . . . . . . . . 176 9.10.5 PWM Control Register 2. . . . . . . . . . . . . . . . . . . . . . . . . . . 178 9.10.6 Dead-Time Write-Once Register . . . . . . . . . . . . . . . . . . . . 181 9.10.7 PWM Disable Mapping Write-Once Register . . . . . . . . . . . 181 9.10.8 Fault Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182 9.10.9 Fault Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 9.10.10 Fault Acknowledge Register. . . . . . . . . . . . . . . . . . . . . . . . 186 9.10.11 PWM Output Control Register . . . . . . . . . . . . . . . . . . . . . . 187 9.11 PWM Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189 |
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