HT81003 datasheet(2/8 Pages) HOLTEK

2 / 8 page

Block Diagram

Pin Assignment

Pad Assignment

Pad Coordinates

Unit:

Pad No.

-387.35

20.06

214.30

-340.60

-391.70

-200.11

383.00

-77.60

-202.25

-377.40

379.05

-347.50

-67.25

-377.40

383.00

192.30

68.25

-377.40

397.50

457.50

Pin Description

Pin No.

Pin Name

I/O

Internal Connection

Description

1, 2, 3, 5, 15, 16

¾¾

No connection

4, 12

VDD

¾¾

Positive power supply

OSCI

Oscillator Input Pin

Oscillator input pin

KEY1

Pull-high

Trigger key 1, active low

I/O1

NMOS Pull-high

Trigger key 2, active low/NMOS output

I/O2

I/O

Pull-high Input/NMOS

Pull-high/transistor output/NMOS output

10, 14

VSS

¾¾

Negative power supply, ground

OUT2

CMOS

PWM output +/NMOS output

OUT1

CMOS

PWM output

-/NMOS output

HT81003

Rev. 1.10

January 22, 2002

( 0 , 0 )

1 0

V D D

O S C I

K E Y 1

V S S

O U T 1

V D D

O U T 2

Chip size: 42.3

´46.7 (mil)

* The IC substrate should be connected to VSS in the

PCB layout artwork.

N C

O S C I

K E Y 1

I / O 1

V D D

N C

V S S

I / O 2

V S S

O U T 2

V D D

O U T 1

1 6

1 5

1 4

1 3

1 2

1 1

1 0

H T 8 1 0 0 3

1 6 D I P - A

N C

D e b o u n c e

C i r c u i t

O n e - s h o t

O s c i l l a t o r

C i r c u i t

T i m e B a s e

G e n e r a t o r

R O M A d d r e s s

C o u n t e r

A u d i o

C o n t r o l l e r

D a t a R O M

T G 1

I / O 1

S t a t u s

D i s p l a y

C o n t r o l l e r

V D D

V S S

O S C I

S e l e c t o r

I / O 2

O U T 1

O U T 2

HT81003 Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

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