ML22Q374/Q394 are voice sound playback LSI ideal for the message playback about 10 to 20 seconds with small size and low current consumption.
Flash ROM for a voice record, oscillator, D class speaker amp. required for a voice sound playback are integrated, and they reduce external parts and package size.
Moreover, since D class speaker amp. is built in, they are most suitable for long battery operated products.
Sound data can be easily created by utility software "Speech LSI Utility".And customers can store the created sound data in a sample LSI using LAPIS Semiconductor's development tool.
|Speech synthesis method||4bit ADPCM2,
8bit non-linear PCM
8/16bit straight PCM
(Can be set method for each phrase）
|Speech ROM capacity||692Kbit Flash|
|Analog output||Class D speaker amplifier|
|Interface||three-wire serial clock synchronization||I2C|
|Max. No. of phrases||30Phrases|
|Operating frequency||4.096MHz （ Typ ) internal|
|Operating voltage||+2.0V to +5.5V|
|Flash memory rewrite times||80 times|
|Operating temperature||-40°C to +85°C|
|Supply form||16pin 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.