Rev. 1.00

2

June 15, 2012

HT1380A/HT1381A

Pad Assignment

1

2

4

5

7

X2

VSS

I/O

SC LK

VD D

3

6

R EST

X1

(0 ,0 )

8

9

10

11

NC

NC

VSS

NC

*TheICsubstrateshouldbeconnectedtoVSSinthePCBlayoutartwork.

Pad Coordinates

Unit: μm

Pad No.

X

Y

1

-456.985

333.025

2

-456.985

264.025

3

-456.985

195.025

4

-455.590

109.935

5

-466.000

-154.955

6

-466.000

-249.955

7

-466.000

-344.955

8

465.966

-309.630

9

465.966

-214.630

10

465.966

-119.630

11

465.966

-24.630

Pad Description

Pin Name

I/O

Internal Connection

Description

VSS

�

CMOS

Negative power supply, ground

X1

I

CMOS

32768Hz crystal input pad

X2

O

CMOS

Oscillator output pad

REST

I

CMOS

Reset pin with serial transmission

I/O

I/O

CMOS

Data Input/Output pin with serial transmission

SCLK

I

CMOS

Serial Clock pulse pin with serial transmission

VDD

�

CMOS

Positive power supply