Holtek HT66F20 Manual page 121

HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
Co�nter Val�e
CCRP
CCRA
TnON
TnPAU
TnPOL
CCRA Int.
Flag TnAF
CCRP Int.
Flag TnPF
TM O/P Pin
(TnOC=�)
TM O/P Pin
(TnOC=0)
PWM D�ty Cycle
set by CCRA
Note: 1. Here TnDPX=0 -- Counter cleared by CCRP
2. A counter clear sets the PWM Period
3. The internal PWM function continues even when TnIO [1:0]=00 or 01
4. The TnCCLR bit has no influence on PWM operation
Rev. 2.50
Co�nter cleared
by CCRP
Pa�se Res�me
PWM Period
set by CCRP
PWM Mode – TnDPX=0
�2�
TnDPX = 0; TnM [�:0] = �0
Co�nter Reset when
TnON ret�rns high
Co�nter Stop if
TnON bit low
PWM res�mes
operation
O�tp�t controlled by
O�tp�t Inverts
other pin-shared f�nction
when TnPOL = �
��ne 22� 20��
Time