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HT81R36 Datasheet EasyVoice Speech

Manufacturer: Holtek Semiconductor

Download the HT81R36 datasheet PDF. This datasheet also includes the HT81R03 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HT81R03_HoltekSemiconductorInc.pdf) that lists specifications for multiple related part numbers.

General Description

The EasyVoiceTM is a single-chip voice synthesizer LSI .

The chip when triggered drives a speaker directly or through an external transistor with a PWM output.

Negligible current is consumed in the standby state.

Overview

HT81xxx EasyVoiceTM Speech.

Key Features

  • Operating voltage: 2.4V~5V.
  • Directly drives an external transistor.
  • PWM function directly driver speaker.
  • Low standby current (1mA typ. for VDD=3V).
  • Minimal external components.
  • 240 notes table ROM for key functions.
  • Programmable silence length and end-pulse width (minimal end-pulse width is 1.3ms at 8kHz sampling rate).
  • Controllable volume.
  • FLAG1 options - End-pulse output - 3Hz, 3HzB flash - 6Hz, 6HzB flash - Busy output - OFF.
  • FLAG2 options -.