HT81XXX

Selection Table

Part No.

Mask

HT81003

HT81006

HT81009

HT81012

HT81018

OTP

HT81R03

HT81R09

HT81R18

HT81R36

Voice Capacity

3 sec

6 sec

9 sec

12 sec

18 sec

36 sec

Note:

The voice capacity is calculated based on 5kHz sampling rate.

For 3-second capacity HT81003/HT81R03 devices, refer to the its relevant data sheet.

Rev. 1.50

1

November 21, 2006

Features

(minimal end-pulse width is 1.3ms at 8kHz sampling

rate)

(based on a 8kHz sampling rate)

General Description

The EasyVoice

The chip when triggered drives a speaker directly or

through an external transistor with a PWM output. Negli-

gible current is consumed in the standby state.

The HT81XXX provides direct key or Matrix key input

and 2 programmable FLAG outputs. With 2.4V~5.0V

power supply, a complete synthesized voice playback

system can be easily built with very few external compo-

nents.

The customer

¢s voice sources are recorded section by

section into an internal mask ROM. The instructions of

section playback arrangement of each key are stored in

the table ROM. The key features are also programma-

ble. With such a flexible structure, the EasyVoice

excellent for versatile voice applications.

Applications

EasyVoice