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Rev. 2.50
20
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Rev. 2.50
2�
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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
HT66F60
Pin Name
Function
OP
I/T
O/T
Pin-Shared Mapping
PA0~PA�
Port A
PAWU
PAPU
ST
CMOS
—
PB0~PB�
Port B
PBPU
ST
CMOS
—
PC0~PC�
Port C
PCPU
ST
CMOS
—
PD0~PD�
Port D
PDPU
ST
CMOS
—
PE0~PE�
Port E
PEPU
ST
CMOS
—
PF0~PF�
Port F
PFPU
ST
CMOS
—
PG0~PG�
Port G
PGPU
ST
CMOS
—
AN0~AN��
ADC inp�t
ACERL
ACERH
AN
—
PA0~PA�� PE6� PE�� PF0� PF�
VREF
ADC reference inp�t
ADCR�
AN
—
PB5
C0-� C�-
Comparator 0� � inp�t
CP0C
CP�C
AN
—
PA3� PC3
C0+� C�+
Comparator 0� � inp�t
CP0C
CP�C
AN
—
PA2� PC2
C0X� C�X
Comparator 0� � o�tp�t
CP0C
CP�C
PRM0
—
CMOS PA0� PA5 or PF0� PF� or PG0� PG�
TCK0~TCK3
TM0~TM3 inp�t
PRM�
ST
—
PA2� PA4� PC2� PC4 or PD2� PD3�
PD0� –
TP0_0� TP0_�
TM0 I/O
TMPC0
PRM2
ST
CMOS PA0� PC5 or PC6� PD5
TP�A
TM� I/O
TMPC0
PRM2
ST
CMOS PA� or PC�
TP�B_0~TP�B_2 TM� I/O
TMPC0
PRM2
ST
CMOS PC0� PC�� PC5 or –� –� PE4
TP2_0� TP2_�
TM2 I/O
TMPC�
PRM2
ST
CMOS PC3� PC4 or PD�� PD4
TP3_0� TP3_�
TM3 I/O
TMPC�
PRM2
ST
CMOS PD3� PD0 or PE5� PE3
INT0~INT3
Ext. Interr�pt 0~3
PRM�
ST
—
PA3� PA4� PC4� PC5 or PC4� PC5�
PE2� –� or PE0� PE�� –� – or PE6�
PE�� –� –
PINT
Peripheral Interr�pt
PRM0
ST
—
PC3 or PC4
PCK
Peripheral Clock o�tp�t
PRM0
—
CMOS PC2 or PC5
SDI
SPI Data inp�t
PRM0
ST
—
PA6 or PD2 or PB�
SDO
SPI Data o�tp�t
PRM0
—
CMOS PA5 or PD3 or PB6 or PD�
SCS
SPI Slave Select
PRM0
ST
CMOS PB5 or PD0 or PD�
SCK
SPI Serial Clock
PRM0
ST
CMOS PA� or PD� or PD6 or PD3
SCL
I
2
C Clock
PRM0
ST
NMOS PA� or PD� or PD6 or PD3
SDA
I
2
C Data
PRM0
ST
NMOS PA6 or PD2 or PB�
SCOM0~SCOM3 SCOM0~SCOM3
SCOMC
—
SCOM PC0� PC�� PC6� PC�
OSC�
HXT/ERC pin
CO
HXT
—
PB�
OSC2
HXT pin
CO
—
HXT
PB2
XT�
LXT pin
CO
LXT
—
PB3
XT2
LXT pin
CO
—
LXT
PB4
RES
Reset inp�t
CO
ST
—
PB0
VDD
Power s�pply*
—
PWR
—
—