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