HT46RU67 Holtek Semiconductor Inc., HT46RU67 Datasheet - Page 24

• Manufacturer Part Number: HT46RU67
• Description: Ht46ru67/ht46cu67 -- A/d Type 8-bit Mcu With Lcd
• Manufacturer: Holtek Semiconductor Inc.

Port PB can also be used as A/D converter inputs. There is a PWM function shared with PD0/PD1/PD2/PD3. If the
PWM function is enabled, the PWM0/PWM1/PWM2/ PWM3 signal will appear on PD0/PD1/PD2/PD3, if PD0/ PD1/
PD2/PD3 are operating in output mode. Writing 1 to the PD0~PD3 data register will enable the PWM output function
while writing 0 will force the PD0~PD3 to remain at 0 . The I/O functions of the PD0/PD1/PD2/PD3 are shown below.
It is recommended that unused or not bonded out I/O lines should be set as output pins by software instruction to avoid
consuming power under input floating state.
The definitions of the PFD control signal and PFD output frequency are listed in the following table.
Note:
Rev. 1.00
Timer
PD0~PD3
OFF
OFF
I/O Mode
ON
ON
X stands for unused
U stands for unknown
M is 65536 for PFD0 or PFD1
N is the preload value for the timer/event counter
f
TMR
is input clock frequency for timer/event counter
Timer Preload Value
Logical Input
I/P (Normal)
N
N
X
X
PA3 Data Register
Input/Output Ports
Logical Output
O/P (Normal)
0
1
0
1
24
PA3 Pad State
Logical Input
I/P (PWM)
PFD
U
0
0
HT46RU67/HT46CU67
PFD Frequency
f
PWM0~PWM3
TMR
February 27, 2008
O/P (PWM)
/[2 (M-N)]
X
X
X