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HT81012 - EasyVoice Speech

Download the HT81012 datasheet PDF. This datasheet also covers the HT81R03 variant, as both devices belong to the same easyvoice speech family and are provided as variant models within a single manufacturer datasheet.

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

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

Other Datasheets by Holtek Semiconductor

Part Number Description
HT81018 EasyVoice Speech
HT81006 EasyVoice Speech
HT81009 EasyVoice Speech
HT81R09 EasyVoice Speech
HT81R18 EasyVoice Speech
HT81R36 EasyVoice Speech
HT82A520R (HT82A520R / HT82A620R) Full Speed USB 8bit OTP MCU
HT82A523R USB 2.0 Full Speed 8-Bit OTP MCU
HT82A525R I/O Type USB 8-Bit OTP MCU
HT82A6208 A/D Type Full Speed USB 8-Bit MCU

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.

View original datasheet text
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.