Configuration Options - Holtek HT66F20-1 Manual

Configuration Options

Configuration options refer to certain options within the MCU that are programmed into the devices
during the programming process. During the development process, these options are selected using
the HT-IDE software development tools. As these options are programmed into the devices using
the hardware programming tools, once they are selected they cannot be changed later using the
application program. All options must be defined for proper system function, the details of which are
shown in the table.
No.
Oscillator Options
High Speed Syste� Oscillato� Selection - f
1. HXT
1
�. ERC
�. HIRC
Low Speed Syste� Oscillato� Selection - f
� 1. LXT
�. LIRC
WDT Clock Selection - f
� 1. f
SUB
�. f /4
SYS
HIRC F�equency Selection:
1. 4MHz
4
�. 8MHz
�. 1�MHz
�ote: The f and the f
SUB
Reset Pin Options
PB0/RES Pin Options:
5 1. RES pin
�. I/O pin
Watchdog Options
Watchdog Ti�e� Function:
� 1. Ena�le
�. Disa�le
CLR WDT Inst�uctions Selection:
7 1. 1 inst�uctions
�. � inst�uctions
LVR Options
LVR Function:
8 1. Ena�le
�. Disa�le
LVR Voltage Selection:
1. �.10V
9 �. �.55V
�. �.15V
4. 4.�0V
SIM Options
SIM Function:
10 1. Ena�le
�. Disa�le
SPI - WCOL �it:
11 1. Ena�le
�. Disa�le
SPI - CSE� �it:
1� 1. Ena�le
�. Disa�le
I C De�ounce Ti�e Selection:
�
1. �o de�ounce
1�
�. � syste� clock de�ounce
�. 4 syste� clock de�ounce
Rev. 1.40
HT66F20-1/HT66F30-1/HT68F20-1/HT68F30-1
Options
:
H
:
SUB
:
S
clock sou�ce a�e LXT o� LIRC selection �y the f
TBC
18�
Flash MCU with EEPROM
configuration option.
L
�ove��e� ��� �01�