HT81003_02 View Datasheet(PDF) - Holtek Semiconductor

Part Name

Description

Manufacturer

HT81003_02

EasyVoice™ 3-Second Speech

Holtek Semiconductor 

HT81003

· KEY2 as a repeat key

As a repeat key, the sections included can be played

sequentially and repeatedly until other key input is

triggered.

Key features

· Key priority

When two keys are triggered simultaneously, the out-

put voice is determined by the key priority as shown

below:

KEY1>KEY2

· Key debounce time

There are three kinds of key-in debounce time to be se-

lected by mask option, namely, 1.2ms, 22ms, 45ms. The

key debounce time varies with the value of the system

frequency.

· Pull-high resistance

Four kinds of key input pin pull-high resistance can

be selected by mask option, namely, 0kW, 50kW,

100kW and 200kW. The resistance may vary with

VDD, temperatures and the chip itself due to pro-

cess variations.

· Trigger mode

The two keys can optioned as one-shot trigger mode

or normal mode.

¨ One shot

When one of the two keys (KEY1, KEY2) is pressed

momentarily or held down, the group corresponding

to that key will play once.

KEY N

AUD

G ro u p N

G ro u p N

¨ Normal trigger

When one of the two keys is pressed and held

down, the corresponding group will continue play-

ing. Once the pressed key is released, the group

will not stop until the included sections are all com-

pleted.

KEY N

AUD

G ro u p N G ro u p N G ro u p N

FLAG

When voices are playing, both FLAG1 and FLAG2 pins

are activated to output one of the following signals

through code option.

FLAG1 can be optioned as one of the following signal

outputs:

OFF, 3HzB flash, Busy, 6HzB flash, 3hz, 6Hz or End-pulse

output

FLAG2, on the other hand, can be set as one of the fol-

lowing signal outputs:

OFF, 3Hz flash, 6Hz flash, or Busy output

· 3Hz/3HzB flash

When voices are playing, FLAG1 as well as FLAG2

pin outputs a 3Hz signal to drive a LED. The signal is

active low, 25% duty. Once the voice output is termi-

nated, the FLAG1 and FLAG2 pins become floating

outputs. When the FLAG1 and the FLAG2 pins are

optioned as 3HzB and 3Hz output, they will alternately

output at a 3Hz rate.

AUD

.LA G

: . lo a tin g

· 6Hz/6HzB flash

When voices are playing, the FLAG1 pin outputs a

6Hz signal to drive a LED. The signal is active low,

25% duty. Once the voice output is terminated, the

FLAG1 pin becomes a floating output. When the

FLAG1 and the FLAG2 pins are optioned as 6HzB

and 6Hz outputs, they will alternately output at a

6Hz rate.

AUD

.LA G

: . lo a tin g

· Busy output

When a voice group is playing, the outputs of both

FLAG1 and FLAG2 are turned low, indicating that the

chip is busy.

AUD

.LA G

: . lo a tin g

In addition to the above-stated output signals, FLAG1

can also generate one of the following signals by code

option:

Rev. 1.10

6

January 22, 2002

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