HT45RM03 Holtek Semiconductor, HT45RM03 Datasheet - Page 24

• Manufacturer Part Number: HT45RM03
• Description: Brushless DC Motor Type 8-Bit OTP MCU
• Manufacturer: Holtek Semiconductor

mentary PWM output with dead time is shown below.
The bits 3~5 of the PWM control register (PWMC) can be used to define the pre-scaling stages of the PWM clock.
PWM period according different PWM prescaler rate bits and system clock.
Rev. 1.00
PWMPS2
PWMPS2
Bit No.
PWM and Complementary PWM Output Without Dead Time (PWMLEV & PWMCLEV = ²0² & ²0²)
0
1
2
3
4
5
6
7
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
PWMCEN
PWMPS0
PWMPS1
PWMPS2
PWMDT0
PWMDT1
PWMPS1
PWMPS1
PWMEN
DTEN
Label
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
10-bit PWM Full Frequency (f
To enable/disable PWM output (0=disabled; 1=enabled)
To enable/disable PWM Complementary output (0=disabled; 1=enabled)
To enable/disable PWM Complementary output with dead time
(0=without dead time; 1=with dead time)
These three bits select the PWM clock prescaler rate.
These two bits select the PWM Complementary output dead time
PWMPS0
PWMPS0
PWMC (1CH) Register
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
24
f
SYS
3.91
1.95
0.98
0.49
0.24
0.12
0.06
0.03
=4MHz
SYS
is 4, 8, 12MHz)
To Define the Prescaler Stages
Function
f
SYS
7.81
3.91
1.95
0.98
0.49
0.24
0.12
0.06
=8MHz f
f
f
f
f
PWM
f
f
f
PWM
PWM
PWM
PWM
PWM
PWM
f
PWM
=f
=f
=f
=f
=f
=f
=f
SYS
=f
SYS
SYS
SYS
SYS
SYS
SYS
SYS
SYS
/128
/16
/32
/64
/2
/4
/8
11.72
5.86
2.93
1.46
0.73
0.37
0.18
0.09
=12MHz
HT45RM03
January 11, 2007
Unit
kHz