Rev. 1.00
114
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Rev. 1.00
115
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HT66FM5440
Brushless DC Motor A/D Flash MCU
HT66FM5440
Brushless DC Motor A/D Flash MCU
PWM Counter Control Circuit
The device includes a 10-bit PWM generator. The PWM signal has both adjustable duty cycle and
frequency that can be setup by programming 10-bit values into the corresponding PWM registers.
10-bit
PWM �p/down co�nter
CKT
PWMR
f
PWM
PWM0~�
PWMP_Int
PWMD0~�_Int
PWMC
DUTR0~�
PRDR
PWM Block Diagram
PWMP(Old)
PWMD_CH0(Old)
PWMD_CH0(New)
PWMP(New)
PWMD_CH0(New)
PWMP(New)
New PWM D�ty
New PWM Period
PWMO
PWM Edge-Aligned mode Timing Diagram
PWMP(Old)
PWMD_CH0(Old)
PWMD_CH0(New)
PWMP(New)
PWMD_CH0(New)
PWMP(New)
New PWM D�ty
New PWM Period
PWMO
Center-align mode 1
Center-align mode �
PWM Center-Aligned mode Timing Diagram