mc68hc908mr8 Freescale Semiconductor, Inc, mc68hc908mr8 Datasheet - Page 167

• Manufacturer Part Number: mc68hc908mr8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

9.7.1.3 Manual Mode
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
In manual mode, the PWM(s) are disabled immediately once a filtered
fault condition is detected (logic high). The PWM(s) remain disabled until
software clears the corresponding FFLAGx event bit and a new PWM
cycle begins. In manual mode, the fault pins are grouped in pairs, each
pair sharing common functionality. A fault condition on fault 1 may be
cleared, allowing the PWM(s) to enable at the start of a PWM cycle
regardless of the logic level at the fault pin. See
condition on fault 4 can be cleared, allowing the PWM(s) to enable, only
if a logic low level at the fault pin is present at the start of a PWM cycle.
See
Pulse-Width Modulator for Motor Control (PWMMC)
FILTERED FAULT PIN 4
FILTERED FAULT PIN 1
Figure
Figure 9-25. PWM Disabling in Manual Mode (Example 1)
Figure 9-26. PWM Disabling in Manual Mode (Example 2)
PWM(S) ENABLED
PWM(S) ENABLED
9-26.
FFLAGx CLEARED
PWM(S) DISABLED
FFLAGx CLEARED
Pulse-Width Modulator for Motor Control (PWMMC)
PWM(S) DISABLED
Figure
PWM(S) ENABLED
PWM(S) ENABLED
9-25. A fault
Fault Protection
Technical Data
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