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Rev. 2.50
230
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Rev. 2.50
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HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
A/D Flash MCU with EEPROM
Configuration Options
Configuration options refer to certain options within the MCU that are programmed into the device
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 device 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.
Options
Oscillator Options
�
High Speed System Oscillator Selection – f
H
:
�. HXT
2. ERC
3. HIRC
2
Low Speed System Oscillator Selection – f
L
:
�. LXT
2. LIRC
3
WDT Clock Selection – f
S
:
�. f
SUB
2. f
SYS
/4
4
HIRC Freq�ency Selection:
�. 4MHz
2. 8MHz
3. �2MHz
Note: The f
SUB
and the f
TBC
clock so�rce are LXT or LIRC selection by the f
L
configuration option.
Reset Pin Options
5
PB0/RES Pin Options:
�. RES pin
2. I/O pin
Watchdog Options
6
Watchdog Timer F�nction:
�. Enable
2. Disable
�
CLR WDT Instr�ctions Selection:
�. � instr�ctions
2. 2 instr�ctions
LVR Options
8
LVR F�nction:
�. Enable
2. Disable
9
LVR Voltage Selection:
�. 2.�0V
2. 2.55V
3. 3.�5V
4. 4.20V
SIM Options
�0
SIM F�nction:
�. Enable
2. Disable
��
SPI – WCOL bit:
�. Enable
2. Disable
�2
SPI – CSEN bit:
�. Enable
2. Disable