HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
Pin Name
RES
VDD
AVDD
VSS
AVSS
Note:
Function
Reset input
Power supply *
ADC power supply *
Ground **
ADC ground **
I/T: Input type; O/T: Output type
OP: Optional by configuration option (CO) or register option
PWR: Power; CO: Configuration option; ST: Schmitt Trigger input
CMOS: CMOS output; NMOS: NMOS output
SCOM: Software controlled LCD COM; AN: Analog input pin
HXT: High frequency crystal oscillator
LXT: Low 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.
HT66F40
Pin Name
PA0~PA7
PB0~PB7
PC0~PC7
PD0~PD7
PE0~PE7
PF0~PF1
AN0~AN7
VREF
C0-, C1-
C0+, C1+
Port A
Port B
Port C
Port D
Port E
Port F
ADC input
ADC reference input
Comparator 0, 1 input
Comparator 0, 1 input
Function
OP
PAWU
PAPU
PBPU
PCPU
PDPU
PEPU
PFPU
ACERL
ADCR1
CP0C
CP1C
CP0C
CP1C
CP0C
CP1C
PRM0
PRM1
TMPC0
PRM2
TMPC0
PRM2
TMPC0
PRM2
I/T
ST
ST
ST
ST
ST
ST
AN
AN
AN
AN
O/T
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
¾
¾
¾
¾
Pin-Shared Mapping
¾
¾
¾
¾
¾
¾
PA0~PA7
PB5
PA3, PC3
PA2, PC2
OP
CO
¾
¾
¾
¾
I/T
ST
PWR
PWR
PWR
PWR
O/T
¾
¾
¾
¾
¾
Pin-Shared Mapping
PB0
¾
¾
¾
¾
C0X, C1X
Comparator 0, 1 output
¾
CMOS
PA0, PA5 or PF0, PF1
PA2, PA4, PC2 or
PD2, PD3, PD0
PA0, PC5 or PC6, PD5
PA1 or PC7
PC0, PC1, PC5 or
-, -,
PE4
TCK0~TCK2
TP0_0, TP0_1
TP1A
TP1B_0~TP1B_2
TM0~TM2 input
TM0 I/O
TM1 I/O
TM1 I/O
ST
ST
ST
ST
¾
CMOS
CMOS
CMOS
Rev. 1.20
9
June 4, 2010
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
