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HT81R03 - EasyVoice Speech

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.

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 -.

📥 Download Datasheet

Datasheet Details

Part number HT81R03
Manufacturer Holtek Semiconductor Inc
File Size 150.90 KB
Description EasyVoice Speech
Datasheet download datasheet HT81R03 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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HT81xxx EasyVoiceTM Speech 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 - 3Hz flash - 6Hz flash - Busy output - OFF · 6 keys (Directed) · 8 keys (Matrix key) · Key options - Sequential/Directed - Repeat (KEY2~KEY6) - STOP key (KEY6) - Key debounce time: 1.