ML22Q394 datasheet(1/42 Pages) ETC2

Part #	ML22Q394

Description	ADPCM Speech Synthesis LSI

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Manufacturer	ETC2 [List of Unclassifed Manufacturers]

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FEDL22Q394-02

Issue Date: Jun. 06, 2014

ML22Q394

ADPCM Speech Synthesis LSI

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GENERAL DESCRIPTION

ML22394 is voice synthesis LSI with built-in Flash memory that stores speech data.

This LSI includes edit ROM, ADPCM2 decoder, low pass filter and D-class speaker amplifier.

Also, ML22394

support the I2C interface.

By integrating all the functions required for voice output into a single chip, this LSI can be more easily

incorporated in compact portable devices.

• Built-in memory capacity and maximum playback time:

Maximum playback time (sec) (at fs=8.0kHz)

Product name

ROM capacity

4bitADPCM2

16bitPCM

ML22Q394-XXX

692 Kbits

22.1

5.5

Notes: ROM capacity shows the numerical value of only a voice area.

• Voice synthesis method:

4-bit ADPCM2

8-bit Nonlinear PCM

8-bit PCM , 16-bit PCM

Can be specified for each phrase.

•Speech ROM capacity

ML22Q394:

692-Kbit Flash

• Sampling frequency(Fs):

6.4 / 8.0 / 10.7 / 12.8 / 16.0 / 21.3 / 25.6 / 32.0 kHz

fs can be specified for each phrase.

•Analog output:

Built-in D-class amplifier

•CPU command interface:

I2C interface

• Maximum number of phrases:

30 phrases

•Disconnection detection function /Speaker pin short detection function

• Source oscillation frequency:

4.096 MHz(internal)

• Power supply voltage:

2.0 to 5.5V

• Flash memory rewritable time:

80 times

• Operating temperature range:

–40 to +85

°C

• Package:

16-pin plastic SSOP

• Product name:

ML22Q394-NNNMB, ML22Q394-xxxMB(xxx: ROM code No.)

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