Pad Description

Pad No.

Pad Name

I/O

Internal

Connection

Description

1~3

KEY10~KEY12

I

Pull-high

Trigger key, low active. 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

option). 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 de-

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

exposure to extreme conditions may affect device reliability.

HT817D0

4

March 15, 2000