Pin Description

HT68F03M/HT68F04M

Pin Name

Function

OP

I/T

O/T

Pin-Shared Mapping

PA0~PA7

Port A

PAWU

PAPU

ST

CMOS

¾

C-

Comparator input

CPC

CPC

AN

¾

PA1

C+

Comparator input

AN

¾

PA0

CX

Comparator output

¾

CMOS

PA2

TCK0

TM0 input

PRM

ST

¾

PA4, PA6 or PA7

TCK1

TM1 input

PRM

ST

¾

PA3 or PA7

TP0

TM0 I/O

PRM

ST

CMOS

PA3, PA5 or PA2

TP1

TM1 I/O

PRM

ST

CMOS

PA4, PA6 or PA7

INT

External Interrupt

PRM

ST

¾

PA3 or PA7

OSC1

HXT/ERC/LXT pin

CO

HXT/LXT

¾

PA6

OSC2

HXT/LXT pin

CO

¾

HXT/LXT PA5

RES

Reset pin

CO

ST

¾

PA7

VDD

Power supply

¾

PWR

¾¾

VSS

Ground

¾

PWR

¾¾

LX

Switching input pin

¾

PWR

¾¾

VOUT

DC-DC converter output pin

¾

PWR

¾¾

CE

DC-DC converter chip enable, active high

¾

NS

¾¾

GND

Ground

¾

PWR

¾¾

NC

Not connected

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

NS: non-standard 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

HT68F03M/HT68F04M/HT66F03M/HT66F04M

Rev. 1.10

4

May 24, 2010