SC3010

HANGZHOU SILAN MICROELECTRONICS CO.,LTD

REV:2.2

2005.12.15

Http: www.silan.com.cn

Page 3 of 15

PIN CONFIGURATIONS

PIN DESCRIPTION

Pin No.

Symbol

Description

1

KI7

Key Sense Input Pin

2

SMS

System Mode Selection Input Pin

3~6

C0~C3

Key Sense Input Pins

7

MDOUT

Generated Output Data Pin modulated with 1/12 oscillator frequency at a 25%

duty factor

8

DOUT

Generated Output Data Pin

9~13

KO7~KO3

Scan Driver Pins

14

Negative Power Supply

15~17

KO2~KO0

Scan Driver Pins

18

OSC

Oscillator Input Pin

19

T2

Test Pin 2

20

T1

Test Pin 1

21~27

KI0~KI6

Key Sense Input Pins

28

Positive Power Supply

FUNCTIONAL DESCRIPTION

1. KEY INPUT OPERATION

A Key Input Operation may be considered legal or illegal depending on the keys pressed. For key

interconnection refer to the application circuit diagram in APPLICATION CIRCUIT SECTION. The maximum

value of the switched key contact series resistance is 7k

Ω.

a). Legal Key Input

A legal key input operation enables the device to activate the corresponding codes. A key input operation is

considered as legal if it is 1). a connection of one K-Input (KI0~KI7) to one K-Output (KO0~KO7), or 2).a