Holtek HT66F20-1 Manual page 121

HT66F20-1/HT66F30-1/HT68F20-1/HT68F30-1
Flash MCU with EEPROM
ETM, PWM Mode, Edge – aligned Mode, T1CCLR=0
CCRP 001b
Pe�iod 1�8
A Duty
B Duty
If f =16MHz, TM clock source is f
SYS
The TP1A PWM output frequency=(f
The TP1B_n PWM output frequency=(f
If the Duty value defined by the CCRA or CCRB register is equal to or greater than the Period value,
then the PWM output duty is 100%.
ETM, PWM Mode, Edge – aligned Mode, T1CCLR=1
CCRA 1
Pe�iod 1
B Duty
ETM, PWM Mode, Center – aligned Mode, T1CCLR=0
CCRP 001b
Pe�iod �5�
A Duty
B Duty
ETM, PWM Mode, Center – aligned Mode, T1CCLR=1
CCRA 1
Pe�iod �
B Duty
Rev. 1.40
010b 011b 100b
�5� �84 51�
CCRA
CCRB
/4, CCRP=100b and CCRA=128 and CCRB=256,
SYS
/4)/512=f /2048=7.8125kHz, duty=128/512=25%.
SYS SYS
/4)/512=f /2048=7.8125kHz, duty=256/512=50%.
SYS SYS
2 3 511
� � 511
CCRB
010b 011b 100b
51� 7�8 10�4
(CCRA�) - 1
(CCRB�) - 1
2 3 511
4 � 10��
(CCRB�) - 1
1�1
101b 110b 111b
�40 7�8 89�
512 1021 1022
51� 10�1 10��
101b 110b 111b
1�80 15�� 179�
512 1021 1022
10�4 �04� �044
�ove��e� ��� �01�
000b
10�4
1023
10��
000b
�04�
1023
�04�