
Rev. 1.71
12
April 11, 2017
Rev. 1.71
13
April 11, 2017
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
HT66F002/HT66F0025/HT66F003/HT66F004
Cost-Effective A/D Flash MCU with EEPROM
HT66F004
Pin Name
Function
OPT
I/T
O/T
Description
PA0/PTP0/
OCDSDA/
ICPDA
PA0
PAWU
PAPU
PASR
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
PTP0
PASR
—
CMOS
PT0 output
OCDSDA
—
ST
CMOS
On Chip Debug System Data Line (OCDS EV only)
ICPDA
—
ST
CMOS
ICP Data Line
PA1/PTP0I
PA1
PAWU
PAPU
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
PTP0I
—
ST
—
PTM0 input
PA2/ICPCK/
OCDSCK
PA2
PAWU
PAPU
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
ICPCK
—
ST
CMOS
ICP Clock Line
OCDSCK
—
ST
—
On Chip Debug System Clock Line (OCDS EV
only)
PA3/PTP1I
PA3
PAWU
PAPU
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
PTP1I
—
ST
—
PTM1 input
PA4/PTCK1/
AN3
PA4
PAWU
PAPU
PASR
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
PTCK1
PASR
ST
—
PTM1 clock input
AN3
PASR
AN
—
ADC input channel 3
PA5/AN4/VREF
PA5
PAWU
PAPU
PASR
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
AN4
PASR
AN
—
ADC input channel 4
VREF
PASR
AN
—
ADC VREF Input
PA6/AN5/
VREFO
PA6
PAWU
PAPU
PASR
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
AN5
PASR
AN
—
ADC input channel 5
VREFO
PASR
—
AN
ADC reference voltage output
PA7/PTP1/AN6
PA7
PAWU
PAPU
PASR
ST
CMOS
General purpose I/O. Register enabled pull-up and
wake-up
PTP1
PASR
—
CMOS
PTM1 output
AN6
PASR
AN
—
ADC input channel 6
PB0/INT0/AN0
PB0
PBPU
PBSR
ST
CMOS
General purpose I/O. Register enabled pull-up
INT0
PBSR
ST
—
External interrupt input
AN0
PBSR
AN
—
ADC input channel 0
PB1/INT1/AN1
PB1
PBPU
PBSR
ST
CMOS
General purpose I/O. Register enabled pull-up
INT1
PBSR
ST
—
External interrupt input
AN1
PBSR
AN
—
ADC input channel 1
PB2/PTCK0/
AN2
PB2
PBPU
PBSR
ST
CMOS
General purpose I/O. Register enabled pull-up
PTCK0
PBSR
ST
—
PTM0 clock input
AN2
PBSR
AN
—
ADC input channel 2