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Speech Synthesis LSI "ML22530 family"
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Automotive-grade lineup
| Data sheets |
Operating Voltage (V) |
Operating Frequency (MHz) |
Oscillator | Operating Temperature (°C) |
ROM Capacity (bit) |
Number of Phrases |
Maximum Playback Time |
CPU I/F |
SP Amplifier Output (W)/Class |
Number of Mixing (Internal) (ch) |
Others | PKG | Automotive Grade*8 |
Sample and Buy |
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- *1 : Maximum playback time when the sampling frequency is 6.4kHz in HQ-ADPCM.
- *2 : Maximum playback time when the sampling frequency is 6.4kHz in ADPCM2.
- *3 : With an external memory module (Max. 128Mbit). Maximum playback time when the sampling frequency is 6.4kHz in HQ-ADPCM.
- *4 : Mask's built-in ROM is 6Mbit and an external memory module (Max. 128Mbit) can be connected.
- *5 : Total of mask's internal 512 phrases and external memory's 512 phrases.
- *6 : While using it clock synchronization serial.
- *7 : When 30 phrases are selected. When 62 phrases are selected, 688Kbit.
- *8 : is for automotive use. can provide AEC-Q100 qualified products.
- NRND ：Not Recommended for New Designs
Overview
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Automotive-grade Speech Synthesis LSI features a guaranteed operating temperature of +105°C Max and integrates a 4 channels mixing function along with speaker amp. Equipped with HQ-ADPCM, 16bit D/A converter, and low-pass filter to achieve high sound quality, and has a built-in 1.0W monaural speaker amplifier to drive speakers directly.
LAPIS Technology's Speech Synthesis LSI offers AEC-Q100 qualified products and products that meet the requirements of the standards for automotive applications. AEC-Q100 has different grades according to the operating temperature range of the IC. LAPIS Technology's Automotive-grade Speech Synthesis LSI belongs to [Grade 2] from -40°C to +105°C.
In addition, as a fail-safe function, it is equipped with functions necessary for in-vehicle applications, such as playback abnormality detection, short-circuit detection of speaker terminals, and high temperature error detection.
Product features
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Feature 1Built-in speaker amp ensures stable operation at +105°C
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Achieved operating temperature guarantee of -40 to +105°C for automotive use. Operation at +105°C is guaranteed, including the built-in memory and speaker amplifier. Can be used with confidence in automotive applications.
By exposing the die pad on the back of the package and dissipating heat through the board, temperature rise inside the LSI including the speaker amplifier is suppressed, and operation is guaranteed at an ambient temperature of +105°C.
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Feature 2Voice data can be rewritten even after customer's product shipment
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[Products with flash memory] and [products with external memory] can rewrite audio data via the SPI I/F of the microcontrollers.
Voice data can be rewritten after customer's product shipment.
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Feature 3Equipped with a variety of fail-safe functions
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Equipped with various fail-safe functions such as [Playback abnormality detection], [Speaker terminal short detection], [High temperature error detection], [Supply voltage drop detection], and [Command transfer error] detection. Various abnormalities of LSI can be monitored.
Applications
LAPIS Technology's speech synthesis LSI for automotive applications is ideal for in-vehicle warning sounds and voice guidance in 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
- *MSL : Moisture Sensitivity Level
Data rev. |
Users rev. |
White rev. |
Errata rev. |
Others 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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