Silan

Semiconductors

SC9012

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.1

2002-02-28

2

Characteristic

Symbol

Value

Unit

Supply Voltage

-0.3 ~ 5.0

V

V

Output Current

-20

mA

Power Dissipation

Pd

300

mW

Storage Temperature

Tstg

-40 ~ +125

°C

Operating Temperature

-20 ~ +75

°C

Parameter

Symbol

Test conditions

Min

Typ

Max

Unit

Operating supply Voltage

All Function Operating

2.0

--

4.0

V

Operating Supply Current

--

--

1

mA

Stand-By Current

All Keys Off Stops. Oscillation

Output Floating.

1

µA

Output High Level Current (Dout)

-10

--

--

mA

Output Low Level Current (LMP)

5

--

--

mA

Input High Level Voltage (KI)

V

Input Low Level Voltage (KI)

0

V

Oscillation Frequency

fosc

--

400

455

600

kHz

Input Pull-down Resistor (KI)

100

300

500

k

Ω

PIN DESCRIPTION

Pin No.

Symbol

I/O

Description

1~4

KI0~KI3

I

Key Scan Input Pins. Each pin has a built-in pull-down resistor

O

Infrared LED Driving Output Pin

--

Positive Power Supply

7

NC

--

8

OSCO

O

Oscillator Output Pin

9

OSCI

I

Oscillator Input Pin

10

--

Negative Power Supply

11

LMP

O

LED Display Output Pin

12~19

KO0~KO8

O

Key Scan Output Pins

20

SEL

I

Custom Code Selection Pin