Pin Name

Function

OP

I/T

O/T

Pin-Shared Mapping

RES

Reset input

CO

ST

¾

PB0

VDD

MCU power supply *

¾

PWR

¾¾

AVDD

A/D converter power supply *

¾

PWR

¾¾

VSS

MCU ground **

¾

PWR

¾¾

AVSS

A/D converter ground **

¾

PWR

¾¾

UDP

USB D+ pin

¾

ST

CMOS

¾

UDN

USB D- pin

¾

ST

CMOS

¾

V33O

3.3V regulator output pin

¾¾¾

¾

VDDU

USB power supply

¾

PWR

¾¾

VSSU

USB ground

¾

PWR

¾¾

NC

Not connected, can not be used

¾¾¾

¾

Note:

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 and VDDU are the ADC and USB power supply respectively.

The AVDD and VDDU pins are 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.

***: When the PINT, PCK and SPI functions are pin-shared remapping to PC4~PC5 and PD0~PD3 pins, the

SPI pins are to be used as the master SPI signal to communicate with the slave SPI in HT45B0K along with the

PINT and PCK pins used as the interrupt input and clock output connected to the SPI to USB chip to control the

overall USB functions.

HT66FB60

Pin Name

Function

OP

I/T

O/T

Pin-Shared Mapping

PA0~PA7

Port A

PAWU

PAPU

ST

CMOS

¾

PB0~PB6

Port B

PBPU

ST

CMOS

¾

PC0~PC1,

PC6~PC7

Port C

PCPU

ST

CMOS

¾

PD4~PD5

Port D

PDPU

ST

CMOS

¾

PE0~PE7

Port E

PEPU

ST

CMOS

¾

PF0~PF7

Port F

PFPU

ST

CMOS

¾

PG0~PG1

Port G

PFPU

ST

CMOS

¾

AN0~AN11

A/D converter input

ACERL

ACERH

AN

¾

PA0~PA7, PE6~PE7,

PF0~PF1

VREF

A/D converter reference input

ADCR1

AN

¾

PB5

C0-

Comparator 0 input

CP0C

AN

¾

PA3

C0+

Comparator 0 input

AN

¾

PA2

HT66FB30/HT66FB40/HT66FB50/HT66FB60

Rev. 1.10

10

June 4, 2010