Holtek HT66F30 - Page 137

Rev. 2.50 136 June 22, 2017 Rev. 2.50 137 June 22, 2017
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
• 10-bit STM, PWM Mode, Edge-aligned Mode, TnDPX=1
CCRP 001b 010b 011b 100b 101b 110b 111b 000b
Period CCRA
Duty 128 256 384 512 640 768 896 1024
ThePWMoutputperiodisdeterminedbytheCCRAregistervaluetogetherwiththeTMclockwhile
thePWMdutycycleisdenedbytheCCRPregistervalue.
• 16-bit STM, PWM Mode, Edge-aligned Mode, TnDPX=0
CCRP 1~255 0
Period CCRP×256 65536
Duty CCRA
Iff
SYS
=16MHz,TMclocksourceisf
SYS
/4,CCRP=2andCCRA=128,
TheSTMPWMoutputfrequency=(f
SYS
/4)/(2×256)=f
SYS
/2048=7.8125kHz,duty=128/(2×256)=25%.
IftheDutyvaluedenedbytheCCRAregisterisequaltoorgreaterthanthePeriodvalue,thenthe
PWMoutputdutyis100%.
• 16-bit STM, PWM Mode, Edge-aligned Mode, TnDPX=1
CCRP 1~255 0
Period CCRA
Duty CCRP×256 65536
ThePWMoutputperiodisdeterminedbytheCCRAregistervaluetogetherwiththeTMclockwhile
thePWMdutycycleisdenedbythe(CCRPx256)exceptwhentheCCRPvalueisequalto0.