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Short playback lineup
Data sheet |
Supply voltage (V) |
Frequency Band (MHz) |
Oscillator | Operation 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 | For automotive*3 |
Sample and Buy |
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- *1 : Maximum playback time when sampling frequency is 6.4kHz with HQ-ADPCM.
- *2 : Maximum playback time when sampling frequency is 6.4kHz in ADPCM2.
- *3 : is a vehicle compatible product. can provide AEC-Q100 qualified products.
Overview

Short playback Speech Synthesis LSI has a ROM of 692Kbit to 4Mbit.
Lineup of [Products with Flash memory] and [Products with MaskROM], and can be replaced with complete pin compatibility.
Developed based on Flash memory products, mass production can be carried out with either Mask ROM products or Flash memory shipped blank (unwritten). Select the best format according to application needs.
Product features
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Features 1Integrated oscillator and Class D amp reduces component count
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The built-in high accuracy 4.096MHz+1.5% (–10°C to +50°C) oscillator and Class D amp require almost no peripheral parts and enable audio playback by simply connecting to a speaker. In addition, the compact package reduces mounting area.
- Applicable Models : ML22Q374、ML22Q394
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Features 2Integrated Class D amp ensures high efficiency output
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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 : ML22Q374、ML22Q394
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Feature 3Built-in disconnection detection function eliminates the need to worry about speaker failure
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The ML223xx series includes a disconnection detection function that can provide notification (i.e. via LED) in the event no sound is output due to disconnection between the speaker amp and speaker. Passing current between SPP and SPM enables detection through High/Low determination. This ensures worry-free operation even in the event of speaker disconnection.
- Applicable Models : ML22Q374、ML22Q394
Applications
LAPIS Technology's Short Playback Speech Synthesis LSI is ideal for sound effects and warning sounds in rice cookers, air conditioners, remote controllers for hot water supply, toys, alarm clocks, etc. lasting from tens of seconds to several minutes.
Two types are available: MaskROM for mass production and Flash memory with rewritable data.

Reference board lineup
Users Manual |
Board outline (mm) |
Supported LSI |
Composition | Remarks | Sample and Buy |
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LSI Document download
Data rev. |
Users rev. |
White rev. |
Errata rev. |
Other rev. |
Package |
Outline |
Environmental |
MSL |
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Reference board document download
Data rev. |
Users rev. |
White rev. |
Errata rev. |
Other rev. |
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