Pin Assignment

Pin Description

HT66F03T3

Pin Name

Function

OP

I/T

O/T

Pin-Shared Mapping

PA0~PA7

Port A

PAWU

PAPU

ST

CMOS

¾

AN0~AN3

A/D Converter input

ACERL

AN

¾

PA0~PA3

VREF

A/D Converter reference input

ADCR1

AN

¾

PA1

C-

Comparator input

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 input

CO

ST

¾

PA7

VDD

MCU power supply

¾

PWR

¾¾

VSS

MCU ground

¾

PWR

¾¾

PAOUT

RF power amplifier output

¾

PWR

NSO

¾

DOUT

Data Output

PAWU

PAPU

ST

CMOS

PA4

CREF

RF transmitter synnchronising signal

¾¾

CMOS

¾

XOUT

RF transmitter crystal pin

¾¾

HXT

¾

XIN

RF transmitter crystal pin

¾

HXT

¾¾

AVDD

RF transmitter power supply

¾

PWR

¾¾

AVSS

RF transmitter ground

¾

PWR

¾¾

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

NSO: Non-standard output

Rev. 1.30

4

July 4, 2011

HT66F03T3/HT68F03T3

8-Bit Flash MCU with RF Transmitter

H T 6 8 F 0 3 T 3

1 6 N S O P - C

P A 7 / [ I N T ] / [ T C K 0 ] / [ T C K 1 ] / [ T P 1 ] / R E S

V D D

P A 6 / [ T C K 0 ] / [ T P 1 ] / O S C 1

P A 5 / [ T P 0 ] / O S C 2

P A 4 / T C K 0 / T P 1 / D O U T

A V D D

A V S S

P A O U T

V S S

P A 0 / C +

P A 1 / C - / V R E F

P A 2 / C X / [ T P 0 ]

P A 3 / I N T / T C K 1 / T P 0

X O U T

X I N

C R E F

1 6

1 5

1 4

1 3

1 2

1 1

1 0

9

1

2

3

4

5

6

7

8

H T 6 6 F 0 3 T 3

1 6 N S O P - C

1 6

1 5

1 4

1 3

1 2

1 1

1 0

9

1

2

3

4

5

6

7

8

P A 7 / [ I N T ] / [ T C K 0 ] / [ T C K 1 ] / [ T P 1 ] / R E S

V D D

P A 6 / [ T C K 0 ] / [ T P 1 ] / O S C 1

P A 5 / [ T P 0 ] / O S C 2

P A 4 / T C K 0 / T P 1 / D O U T

A V D D

A V S S

P A O U T

V S S

P A 0 / C + / A N 0

P A 1 / C - / A N 1 / V R E F

P A 2 / C X / [ T P 0 ] / A N 2

P A 3 / I N T / T C K 1 / T P 0 / A N 3

X O U T

X I N

C R E F