Holtek HT68F Series Manual page 135

HT68F20/HT68F30/HT68F40/HT68F50/HT68F60
HT68FU30/HT68FU40/HT68FU50/HT68FU60
Enhanced I/O Flash Type 8-Bit MCU with EEPROM
10-bit STM, PWM Mode, Edge-aligned Mode, TnDPX=0
CCRP 001b
Period 128
D�t�
If f =16MHz, TM clock source is f
SYS
The STM PWM output frequency=(f
If the Duty value defined by the CCRAregister is equal to or greater than the Period value, then the
PWM output duty is 100%.
10-bit STM, PWM Mode, Edge-aligned Mode, TnDPX=1
CCRP 001b
Period
D�t� 128
The PWM output period is determined by the CCRAregister value together with the TM clock while
the PWM duty cycle is defined by the CCRP register value.
16-bit STM, PWM Mode, Edge-aligned Mode, TnDPX=0
If f =16MHz, TM clock source is f
SYS
The STM PWM output frequency=(f
If the Duty value defined 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
The PWM output period is determined by the CCRAregister value together with the TM clock while
the PWM duty cycle is defined by the (CCRP×256) except when the CCRP value is equal to 0.
Rev. 2.10
010b 011b 100b
256 38� 512
CCRA
/4, CCRP=100b and CCRA=128,
SYS
/4)/512=f /2048=7.8125kHz, duty=128/512=25%.
SYS SYS
010b 011b 100b
CCRA
256 38� 512
CCRP 1~255
Period CCRP×256
D�t�
/4, CCRP=2 and CCRA=128,
SYS
/4)/(2×256)=f /2048=7.8125kHz, duty=128/(2×256)=25%.
SYS SYS
CCRP 1~255
Period
D�t� CCRP×256
135
101b 110b 111b
6�0 768 896
101b 110b 111b
6�0 768 896
0
65536
CCRA
0
CCRA
65536
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000b
102�
000b
102�