Pad Description

Pad No.

Pad Name

I/O

Internal

Connection

Description

1~3

KEY10~KEY12 I

Pull-high

Trigger key, active low. 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

8

FLAG1

O

NMOS

Open Drain

3HzB/6HzB flash output, busy output, end-pulse

or voice output indication (by mask option). Open

drain, active low output

9

VSS

¾¾

Negative power supply, ground

10

FLAG2

O

NMOS

Open Drain

3Hz/6Hz flash output or busy output (by mask op-

tion). Open drain, active low output

11~19

KEY1~KEY9

I

Pull-high

Trigger key, active low. Key features such as

debounce time, pull-high resistance and repeat are

all by mask option.

Absolute Maximum Ratings

Supply Voltage ............................... -0.3V to 6V

Storage Temperature ............... -50°Cto125°C

Operating Temperature ............ -20°Cto70°C

Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maxi-

mum Ratings² may cause substantial damage to the device. Functional operation of this device

at other conditions beyond those listed in the specification is not implied and prolonged expo-

sure to extreme conditions may affect device reliability.

HT815D0

4

March 15, 2000