HT81R18

HT81XXX

Rev. 1.40

5

March 1, 2005

1

2

3

4

5

6

7

8

9

1 0

1 6

1 5

1 4

1 3

1 2

1 1

( 0 , 0 )

V D D

O S C I

K E Y 3

V S S

O U T 1

V D D

I / O 2

I / O 1

K E Y 4

V P P

O E

Chip size: 51.6

´ 138 (mil)

2

* The IC substrate should be connected to VSS in the PCB layout artwork.