HT81R03-00 데이터 시트보기 (PDF) - Holtek Semiconductor

부품명

상세내역

제조사

HT81R03-00

EasyVoice™ 3-Second Speech

Holtek Semiconductor 

Preliminary

HT81003/HT81R03

KEY1

KEY2

( S ile n c e )

N p u ls e

M p u ls e

AUD

G ro u p 1 -N

G ro u p 1 -M

Figure 2. KEY1 sub-group selection

· 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 output voice is determined by the key pri-

ority as shown below:

KEY1>KEY2

· Key debounce time

There are three kinds of key-in debounce time to

be selected 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 resis-

tance can be selected by mask option,

namely, 0kW, 50kW, 100kW and 200kW. The

resistance may vary with VDD, tempera-

tures and the chip itself due to process vari-

ations.

· 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

¨ Normal trigger

When one of the two keys is pressed and

held down, the corresponding group will

continue playing. Once the pressed key is

released, the group will not stop until the

included sections are all completed.

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 following 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 terminated, 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

G ro u p N

G ro u p N

7

July 24, 2000

Share Link: