HT46R068B/HT46R069B
Enhanced A/D Type 8-bit OTP MCU
System Control Registers – CTRL0, CTRL1, CTRL2
These registers are used to provide control over various internal functions. Some of these include
the PFD control, PWM control, certain system clock options, the LXT Oscillator low power
control, external Interrupt edge trigger type, Watchdog Timer enable function, Time Base function
division ratio, and the LXT oscillator enable control.
● CTRL0 Register
Bit
Name
R/W
7
PCFG
R/W
0
6
5
4
3
2
PFDC
R/W
0
1
0
PFDCS PWMSEL PWMC1 PWMC0
LXTLP CLKMOD
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
POR
Bit 7
PCFG: I/O configuration
0: (PWM0/TC1)/INT/PFD pin-shared with PA4/PA3/PA1
1: (PWM0/TC1)/INT/PFD pin-shared with PB5/PB4/PB3
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PFDCS: PFD clock source
0: timer0
1: timer1
PWMSEL: PWM type selection
0: 6+2
1: 7+1
PWMC1: I/O or PWM1
0: I/O
1: PWM1
PWMC0: I/O or PWM0
0: I/O
1: PWM0
PFDC: I/O or PFD
0: I/O
1: PFD
LXTLP: LXT oscillator low power control function
0: LXT Oscillator quick start-up mode
1: LXT Oscillator Low Power Mode
CLKMOD: system clock mode selection.
0: High speed system clock
1: LXT system clock, high speed oscillator stopped
Note: If PWM0/1/2/3 output is selected by PWMC0/1/2/3 bit, fTP comes always
from fSYS. (fTP is the clock source for timer0, time base and PWM)
Rev. 1.00
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HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
