HT46R62 Holtek Semiconductor Inc., HT46R62 Datasheet - Page 27

• Manufacturer Part Number: HT46R62
• Description: Ht46r62/ht46c62 -- A/d With Lcd Type 8-bit Mcu
• Manufacturer: Holtek Semiconductor Inc.

Options
The following shows the options in the device. All these options should be defined in order to ensure proper functioning
system.
Rev. 1.70
OSC type selection.
This option is to decide if an RC or crystal or 32768Hz crystal oscillator is chosen as system clock.
WDT, RTC and time base clock source selection.
There are three types of selections: system clock/4 or RTC OSC or WDT OSC.
WDT enable/disable selection.
WDT can be enabled or disabled by option.
WDT time-out period selection.
There are four types of selection: WDT clock source divided by 2
2
CLR WDT times selection.
This option defines the method to clear the WDT by instruction. One time means that the CLR WDT can clear the
WDT. Two times means only if both of the CLR WDT1 and CLR WDT2 have been executed, the WDT can be
cleared.
Time Base time-out period selection.
The Time Base time-out period ranges from 2
Buzzer output frequency selection.
There are eight types of frequency signals for buzzer output: f
tions.
Wake-up selection.
This option defines the wake-up capability. External I/O pins (PA only) all have the capability to wake-up the chip
from a HALT by a falling edge (bit option).
Pull-high selection.
This option is to decide whether the pull-high resistance is visible or not in the input mode of the I/O ports. PA, PB and
PD can be independently selected (bit option).
I/O pins share with other function selections.
PA0/BZ, PA1/BZ: PA0 and PA1 can be set as I/O pins or buzzer outputs.
LCD common selection.
There are three types of selections: 2 common (1/2 duty) or 3 common (1/3 duty) or 4 common (1/4 duty). If the 4
common is selected, the segment output pin SEG19 will be set as a common output.
LCD bias power supply selection.
There are two types of selections: 1/2 bias or 1/3 bias
LCD bias type selection.
This option is to determine what kind of bias is selected, R type or C type.
LCD driver clock frequency selection.
There are seven types of frequency signals for the LCD driver circuits: f
lection by options.
LCD ON/OFF at HALT selection.
LCD Segments as logical output selection, (byte, bit, bit, bit, bit, bit, bit, bit, bit option)
[SEG0~SEG7], SEG8, SEG9, SEG10, SEG11, SEG12, SEG13, SEG14 or SEG15
LVR selection.
LVR has enable or disable options
LVD selection.
LVD has enable or disable options
PFD selection.
If PA3 is set as PFD output, PFD is the timer overflow signal of the Timer/Event Counter respectively.
PWM selection: (7+1) or (6+2) mode
PD0: level output or PWM0 output
PD1: level output or PWM1 output
PD2: level output or PWM2 output
INT0 or INT1 triggering edge selection: disable; high to low; low to high; low to high or high to low.
15
/f
S
~2
16
/f
S
.
12
/f
S
to 2
Options
15
/f
27
S
. f
S
S
/2
means the clock source selected by options.
2
~f
S
/2
9
S
. f
/2
12
2
S
/f
~f
S
means the clock source selected by op-
S
~2
/2
13
8
. f
/f
S
S
, 2
stands for the clock source se-
HT46R62/HT46C62
13
/f
S
~2
14
/f
S
, 2
February 14, 2006
14
/f
S
~2
15
/f
S
or