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Speech Synthesis LSI

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Product Overview

  • Abundant Market Achievement: This product has been used in a variety of applications, such as toys and cars,
    for around 30 years.
  • We offer a wide selection of products, focusing on superior sound quality ADPCM method.
  • We provide a wide range of customer support covering recording and sample creation

Applications

Applications

Lineups

  • LAPIS Semiconductor's Speech Synthesis LSI collects wide products holding the top track record(*) in the domestic market in Japan. The various built-in memory types can be selected according to the customer requiring memory size.
    ※LAPIS Semiconductor's survey


 

Speech Synthesis LSI Series with Built-in Large Capacity P2ROM™ 


This series is the speech synthesis LSI equipped with LAPIS Semiconductor's original P2ROM™.
After being assembled, these products wait for an order from customers, and then sound data is written.
This process can significantly reduce the sample creation time and mass production TAT.
It is suitable for a long time sound playback such as audio instruction

Series Functions Max. playback time
Serial interface type / speaker amplifier installed /
2ch simultaneous playback
1044sec.
Speech-speed and pitch conversion function installed /
Serial interface type / speaker amplifier installed
1044sec.
Serial interface type
P2ROM built-in (ML2280xseries)
OTP built-in (ML22P80xseries)
524sec.

Speech Synthesis LSI Series with Built-in Small / Medium Capacity Flash ROM/Mask ROM


These products are equipped with 920Kbit-4Mbit ROMs, and each series provides pin-compatible products and offers full compatibility between FlashROM and MaskROM.
Therefore, after developing with FlashROM, you can change to MaskROM or just keep FlashROM as your choice for
mass production.

Series Functions Max. playback time
Serial interface type / speaker amplifier installed / 2ch simultaneous playback
Mask ROM built-in (ML2256xseries)
Flash memory built-in (ML22Q563)
201sec.
For automotive / serial interface type / speaker amplifier installed
Mask ROM built-in (ML22321)
Flash memory built-in (ML22Q321)
46sec.

Speech Synthesis LSI with Built-in Small Capacity FlashROM


These products are voice sound playback LSI with small size and low power, and functions necessary
for voice output, such as oscillator, amplifier and etc., are all integrated into a single chip.
It is ideal for the voice message playback simply and easily.

Series Functions Max. playback time
SPI(ML22Q374) / I2C(ML22Q394)
with D class speaker amplifier
21sec.

Speech Synthesis LSI Series for Automotive Systems


ML2257 series and ML22Q553 guarantee operation at +105°C with the 4ch mixing function and speaker amplifier implemented. Also, the internal temperature of LSI and a voltage drop in the power supply are detected as a fail-safe.
More functions necessary for car installation are also included, such as a detection of CPU command send error and over-current shutdown circuit. FlashROM and MaskROM types are available with full compatibility between them.

Series Functions Max. playback time
For automotive / serial interface type / speaker amplifier installed / 4ch
simultaneous playback Flash memory built-in
201sec.
For automotive / serial interface type / speaker amplifier installed /
4ch simultaneous playback
Mask ROM built-in (ML2257xseries)
Flash memory built-in (ML22Q573)
201sec.
For automotive / serial interface type / speaker amplifier installed
Mask ROM built-in (ML22321)
Flash memory built-in (ML22Q321series)
46sec.
SPI(ML22Q374) / I2C(ML22Q394)
with D class speaker amplifier
21sec.

Speech Synthesis LSI Series Compatible with External Memory


If you want to play more sound, the external memory compatible speech synthesis LSI series is the best option for you.
A serial memory of up to 128Mbit can be connected externally.

Series Functions Max. playback time
Serial interface type / speaker amplifier installed /
4ch simultaneous playback / Serial external memory
8384sec.
(When 128Mbit external ROM was connected.)
Serial interface type / speaker amplifier installed /
4ch simultaneous playback / Serial external memory
6550sec.
(When 128Mbit external ROM was connected.)