896Kbit Flash/Mask ROM built-in Speech Synthesis LSI with CPU interface / volume control function
ML22Q321/ML22321 series is speech synthesis LSIs with built-in speaker amplifier. It has internal Flash memory / MaskROM and can be controlled by event input from serial interface. The built-in speaker amplifier achieves a solution required for sound reproduction by one chip and high fidelity sound by the integrated 16bit DAC. 62 phrases are provided which are enough for small capacity series.
This series can easily play back sound by event input of 62 patterns from serial interface. Furthermore, the volume control function by external analog voltage input, and the speaker pin disconnection detection function and high temperature error detection function as fail safe functions are also installed.
As to Flash memory, users can write the sound data by themselves using LAPIS Semiconductor's specifically designed tools.
- The control with 3 line serial interface is possible without changing microcontroller.
- Melody and sound effects can be reproduced with high fidelity and high compression by HQ-ADPCM.
- Speaker amp. is built in that enables sound playback by simply connecting a speaker.
- Volume control is possible by external analog voltage input with standalone without CPU command.
- High reliability with disconnection detection function and high temperature error detection function.
- Two LSIs lineup with Mask/Flash pin compatibility.
| Parameter | Specification | |
|---|---|---|
| Part No. | ML22Q321 datasheet[pdf] |
ML22321 datasheet[pdf] |
| ROM type | Flash | Mask |
| CPU interface | Clock synchronous serial interface | |
| ROM size (bit) | 896K | |
| Maximum playback time (sec) | 43(*1) | |
| Main features | Speaker disconnection detection Temperature protection circuit |
|
| Operating power supply voltage | +2.3V to +5.5V | |
| Operating frequency | 4.096MHz | |
| Operating temperature | -40°C to +85°C | |
| Speaker driver amplifier | 1.0W (8Ω, at 5V) | |
| D/A converter | 16bit | |
| Maximum number of events | 62 events | |
| Speech synthesis method | 4bit ADPCM2, HQ-ADPCM, 8bit PCM, 16bit straight PCM (Can be specified for each phrase) |
|
| Sampling frequency when Fosc=4.096MHz |
6.4k, 8.0k, 10.7k, 12.8k, 16.0k, 21.3k, 25.6k, 32.0k (Can be specified for each phrase) |
|
| Package | 30pin plastic SSOP | |
HQ-ADPCM is a high sound quality audio compression technology of "Ky's".
"Ky's" is a registered trademark of National University Corporate Kyushu Institute of Technology.
ML22Q321/ML22321 playback time
| Part No. | ROM size (bit) |
Maximum playback time(s) (at Fsam=8.0kHz) | ||
|---|---|---|---|---|
| HQ-ADPCM | 4bitADPCM2 | 16bitPCM | ||
| ML22Q321/ML22321 | 896K | around 35 | 28 | 7 |
ML22Q321/ML22321 package dimension figure
Examples
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ML22Q321-NNN
ML22321-XXX
() is ML22331
Application Circuit
- Speech Synthesis LSI
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- ML2280x/ML22P80x series
- ML22Q563/ML2256x series
- ML22321/ML22Q321 series
- ML22Q553
- ML22Q573/ML2257x series
- ML22Q594
- ML2233x/ML22Q33x series
- ML2234x/ML22Q34x series
- ML22Q374/ML22Q394
- ML22420/ML22460 -Mixing speech synthesis of four channels with serial ROM interface LSI-
- ML2011 -MP3 decoder LSI with monaural speaker amplifier-
*P2ROM™(Production Programmed ROM)
The above logos are trademarks of LAPIS Semiconductor CO., LTD.
The top logo for Speech LSI is a registered trademark in the U.S.
Please inquire from
Communication LSI
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