Pin Description

Pin No.

Pin Name

I/O

Internal

Connection

Description

1~6,

15, 24

KEY1~KEY16

I

Pull-High

Trigger keys, low active, retriggerable keys

7

NC

—

—

No connection

8

VDD

I

—

Positive power supply

9AUD

O

PMOS

Output

Voice output for driving an external transistor

10

OSCO

O

—

Oscillator output pin

11

OSCI

I

—

Oscillator input pin

12

FLAG

O

NMOS

Open Drain

3Hz flash, low active output, open drain

13

VSS

I

—

Negative power supply (GND)

14

TEST

I

Pull-High

For IC test only

Absolute Maximum Ratings

Supply Voltage .............................. –0.3V to 6.0V

Storage Temperature................. –50

Operating Temperature................... 0

Electrical Characteristics

(Ta=25

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Condition

Supply Voltage

—

—

2.4

—

5.0

V

Operating Current

3V

No load

—

200

400

Stand-by Current

3V

—

—

1

5

Max. AUD Output Current

3V

–1.5

–2

—

mA

FLAG Sink Current

3V

1.5

3.0

—

mA

“L” Input Voltage

—

—

—

—

V

“H” Input Voltage

—

—

——

V

System Frequency

3V

—

180

—

KHz

HT3015A

3

25th June ’96