Holtek HT66F20-1 Manual page 13

HT66F20-1/HT66F30-1/HT68F20-1/HT68F30-1
Flash MCU with EEPROM
HT66F30-1
Pin Name Function
PA0~PA7 Po�t A
PB0~PB5 Po�t B
PC0~PC7 Po�t C
A�0~A�7 ADC input
VREF ADC �efe�ence input
C0-� C1- Co�pa�ato� 0� 1 input
C0+� C1+ Co�pa�ato� 0� 1 input
C0X� C1X Co�pa�ato� 0� 1 output
TCK0� TCK1 TM0� TM1 input
TP0_0� TP0_1 TM0 I/O
TP1A TM1 I/O
TP1B_0� TP1B_1 TM1 I/O
I�T0� I�T1 Ext. inte��upt 0� 1
PI�T Pe�iphe�al inte��upt
PCK Pe�iphe�al clock output
SDI SPI data input
SDO SPI data output
SCS SPI slave select
SCK SPI se�ial clock
SCL I C clock
�
SDA I C data
�
SCOM0~SCOM� SCOM0~SCOM�
OSC1 HXT/ERC pin
OSC� HXT pin
XT1 LXT pin
XT� LXT pin
RES Reset input
VDD Powe� supply *
AVDD ADC powe� supply *
VSS G�ound **
AVSS ADC g�ound **
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;
*: VDD is the device power supply while AVDD is the ADC power supply. The AVDD pin is bonded
together internally with VDD.
**: VSS is the device ground pin while AVSS is the ADC ground pin. The AVSS pin is bonded together
internally with VSS.
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. 1.40
OP I/T
PAWU
ST
PAPU
PBPU ST
PCPU ST
ACERL A�
ADCR1 A�
A�
CP0C
A�
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
— PWR
— PWR
O/T: Output type
CO: Configuration option; ST: Schmitt Trigger input
NMOS: NMOS output
AN: Analog input pin
LXT: Low frequency crystal oscillator
1�
O/T Pin-Shared Mapping
CMOS —
CMOS —
CMOS —
— PA0~PA7
— PB5
— PA�� PC�
— PA�� PC�
CMOS PA0� PA5
— PA�� PA4
CMOS PA0� PC5
CMOS PA1
CMOS PC0� PC1
— PA�� PA4
— PC� o� PC4
CMOS PC� o� PC5
— PA� o� PC0
CMOS PA5 o� PC1
CMOS PB5 o� PC�
CMOS PA7 o� PC7
�MOS PA7 o� PC7
�MOS PA� o� PC0
SCOM PC0� PC1� PC�� PC7
— PB1
HXT PB�
— PB�
LXT PB4
— PB0
— —
— —
— —
— —
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