Holtek HT68F Series Manual page 18

HT68F30
Pin Name Function
PA0~PA7 Port A
PB0~PB5 Port B
PC0~PC7 Port C
C0-� C1- Comparator 0� 1 inp�t
C0+� C1+ Comparator 0� 1 inp�t
C0X� C1X Comparator 0� 1 o�tp�t
TCK0� TCK1 TM0� TM1 inp�t
TP0_0� TP0_1 TM0 I/O
TP1A TM1 I/O
TP1B_0� TP1B_1 TM1 I/O
INT0� INT1 Ext. Interr�pt 0� 1
PINT Periphera� Interr�pt
PCK Periphera� C�ock o�tp�t
SDI SPI Data inp�t
SDO SPI Data o�tp�t
SCS SPI S�ave Se�ect
SCK SPI Seria� C�ock
SCL I C C�ock
2
SDA I 2 C Data
SCOM0~SCOM3 SCOM0~SCOM3
OSC1 HXT/ERC pin
OSC2 HXT pin
XT1 LXT pin
XT2 LXT pin
RES Reset inp�t
VDD Power s�pp��
VSS Gro�nd
Note: I/T: Input type;
OP: Optional by configuration option (CO) or register option
PWR: Power;
CMOS: CMOS output;
SCOM: Software controlled LCD COM;
HXT: High frequency crystal oscillator
LXT: Low frequency crystal oscillator
As the Pin Description Summary table applies to the package type with the most pins, not all of the above
listed pins may be present on package types with smaller numbers of pins.
Rev. 2.10
HT68F20/HT68F30/HT68F40/HT68F50/HT68F60
HT68FU30/HT68FU40/HT68FU50/HT68FU60
Enhanced I/O Flash Type 8-Bit MCU with EEPROM
OP I/T
PAWU
ST
PAPU
PBPU ST
PCPU ST
AN
CP0C
AN
CP1C
—
— ST
TMPC0 ST
TMPC0 ST
TMPC0 ST
— ST
PRM0 ST
PRM0 —
PRM0 ST
PRM0 —
PRM0 ST
PRM0 ST
PRM0 ST
PRM0 ST
SCOMC —
CO HXT
CO —
CO LXT
CO —
CO ST
— PWR
— PWR
O/T: Output type
CO: Configuration option; ST: Schmitt Trigger input
NMOS: NMOS output
18
O/T Pin-Shared Mapping
CMOS —
CMOS —
CMOS —
— PA3� PC3
— PA2� PC2
CMOS PA0� PA5
— PA2� PA�
CMOS PA0� PC5
CMOS PA1
CMOS PC0� PC1
— PA3� PA�
— PC3 or PC�
CMOS PC2 or PC5
— PA6 or PC0
CMOS PA5 or PC1
CMOS PB5 or PC6
CMOS PA7 or PC7
NMOS PA7 or PC7
NMOS PA6 or PC0
SCOM PC0� PC1� PC6� PC7
— PB1
HXT PB2
— PB3
LXT PB�
— PB0
— —
— —
AN: Analog input pin
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