ML22Q374 Datasheet, PDF (1/35 Pages) List of Unclassifed Manufacturers – ADPCM Speech Synthesis LSI

ML22Q374
ADPCM Speech Synthesis LSI
FEDL22Q374-02
Issue Date: Jun. 06, 2014
GENERAL DESCRIPTION
ML22Q374 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,
ML22Q374 support the synchronous serial 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:
Product name
ROM capacity
Maximum playback time (sec) (at fs=8.0kHz)
4bitADPCM2
16bitPCM
ML22Q374-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
ML22Q374:
692-Kbit Flash
• Sampling frequency(Fs):
6.4 / 8.0 / 10.7 / 12.8 / 16.0 / 21.3 / 25.6 / 32.0 kHz
f_s can be specified for each phrase.
•Analog output:
Built-in D-class amplifier
•CPU command interface:
Synchronous serial 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:
ML22Q374-NNNMB, ML22Q374-xxxMB(xxx: ROM code No.)
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