General Description

The HT85XXX family is a series of programmable speech synthesizers and tone generators designed for user-defined voice and melody applications. It provides various sampling rates and beats, tone levels, tempos for the speech synthesizer and melody generator.

Features

? Operating voltage: 2.4V~5.0V

? Driver speaker (32Ω) VDD=4.5V, IDD=90mA

? Programmable tone melody generator

? ADPCM, μ-law PCM, PCM synthesis

? Wide range of sampling rate for voice synthesis

? Minimum sampling rate step: 100Hz

? Voice melody mixed output

? Programmable 2 channels of melody mixed output

? Programmable 2 channels of voice mixed output

? 13 kinds of melody beats

? 5 octaves of tone level and 18 tempos

? 16 levels of digital volume control

? Eight programmable I/O pins

? Four programmable input pins

? Provides 36 sec to 96 sec of voice capacity

? Timer controller

? Voice fill-in function

? Powerful user-defined functions

? Power-on initial setting

? 28-pin SKDIP package