• Speech synthesis LSI special site

Support Site Login

Supports external memory lineup

  Data
sheets
Supply
Voltage
(V)
Frequency
Band
(MHz)
Oscillator Operating
Temperature
(°C)
ROM
capacity
(bit)
Playback
phrase
count
Maximum
playback
time(s)
CPU
I/F
SP amplifier
output (W)/class
Mixing
number
(internal)
(ch)
Other PKG Halogen
Free
Support *3
Sample
and
Buy
  • *1 : Maximum playback time when sampling frequency is 6.4kHz in ADPCM2.
  • *2 : When using an external memory (Max. 128Mbit), the maximum playback time when the sampling frequency is 6.4kHz with HQ-ADPCM.
  • *3 : Halogen-free compatible mark: Halogen-free compatible products are available. Contact your sales representative for details.

Overview

Up to 128Mbit serial memory can be connected
  • External memory compatible speech synthesis LSI can connect up to 128Mbit serial memory externally.
    Because it supports a large memory, it is ideal for long audio playback.

Product features

Features 1Speech Synthesis LSIs control external memory, facilitating voice generation

Controlling external memory allows Speech Synthesis LSIs to play back audio data without placing a load on the MCU.
Voice generation is easily achieved by inputting control commands of only a few bytes from an MCU.

Features 2High fidelity, high compression HQ-ADPCM *1 makes it possible to reduce memory capacity

The ML226xx series adopts the newly developed high fidelity, high compression voice algorithm HQ-ADPCM that provides a clearer sound and richer audio range while reducing data size compared with conventional ADPCM, providing a more comfortable listening experience. For example, melodies and sound effects that are degraded with ADPCM and cannot be played with uncompressed PCM can be compressed with HQ-ADPCM, ensuring superior sound quality while reducing memory capacity.
Up to 80% compression is possible vs 4bit ADPCM and 20% compared with 16bit ADPCM.

  • Applicable Models : ML22620、ML22660
  • *1 : HQ-ADPCM is Ky's high-quality sound compression technology. Ky's is a registered trademark of Kyushu Institute of Technology.Ky's logo

Feature 3Integrated Class D amp ensures high efficiency output

Class D speaker amps are capable of 1.0W (Max) output, feature low heat generation even at high (audio) volumes, and minimize heat dissipation measures.
In addition, efficiency is excellent at low battery power, reducing current consumption and prolonging battery life.

  • Applicable Models : ML22620、ML22660

Applications

LAPIS Semiconductor's External Memory compatible Speech Synthesis LSI is ideal for a melody system, zoo, museum guide, instruction manual, healing goods, radar detector, kids book etc. lasting from tens of seconds to several minutes.
The capacity of external memory is free.

Speech synthesis LSI Application for External memory

Reference board lineup

  Users
Manual
Board
outline
(mm)
Supported
LSI
Composition Remarks Sample
and
Buy

LSI Document download

 

Data
sheets

rev.

Users
Manual

rev.

White
paper

rev.

Errata

rev.

Other

rev.

Package
code

Outline
drawing
Mounting specifications

Environmental
data

MSL

Reference board document download

 

Data
sheets

rev.

Users
Manual

rev.

White
paper

rev.

Errata

rev.

Other

rev.