Pad Assignment

Pad Coordinates

Unit: mm

Pad No.

X

Y

1

-914.50

1997.95

2

-914.50

1854.55

3

-914.50

1663.95

4

-987.90

-2023.45

5

-254.60

-1996.95

6

-18.90

-1996.95

7

411.90

-1996.95

8

674.70

-1996.95

9

806.10

-2027.55

10

937.90

-1996.95

11

912.80

1501.15

12

912.80

1639.75

13

912.80

1835.15

14

912.80

1978.75

15

709.50

1949.25

16

179.20

1949.25

17

22.00

1949.25

18

-156.40

1949.25

19

-734.20

1949.25

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

Pad Description

Pad No.

Pad Name

I/O

Internal

Connection

Description

1~3

KEY10~KEY12

I

Pull-high

Trigger key, low active. Key features such as

debounce time, pull-high resistance and repeat

are all by mask option.

4

VDD

¾¾

Positive power supply

5

AUD

O

PMOS

Open Drain Voice output for driving an external transistor

6

OSC2

O

¾

Oscillator output pin

7

OSC1

I

¾

Oscillator input pin

HT818D0

3

March 15, 2000

1

11

2

12

3

13

4

14

5

15

6

16

7

17

8

18

9

19

10

(0 , 0 )

KE Y1 0

KE Y1 1

KE Y1 2

KE Y1

KE Y2

KE Y3

KE Y4