E2D0083-27-44
¡ Semiconductor
MSM9888L
¡ Semiconductor
Flash-driving Recording and Playback IC
This version:
MSM9888L
Jan. 1998
Previous version: May. 1997
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GENERAL DESCRIPTION
The MSM 9888L is a recording and playback IC that is controlled by the micro-controller in serial
mode, compresses voice with the Oki ADPCM system with high tone quality, and directly stores
voice data inthe serial voice flash momory. This IC can operate in a range of 2.7 to 3.6 V and
contains a mask ROM. Since the package is small and backup is not needed, this recording and
playback IC is suitable for the voice system such as handy terminals.
FEATURES
• Voice analyzing and synthesizing system
: 4-bit OKI ADPCM system
•
8-bit OKI non-linear PCM system
(for ROM playback only)
•
D/A converter
• Built-in 12-bit A/D
• Built-in LPF
: Attenuation rate –40 dB/oct
• Sampling frequency (for 4.096 MHz of source oscillation frequency)
: 2.0 kHz, 2.7 kHz, 3.2kHz, 4.0 kHz, 5.3 kHz, 6.4 kHz, 8 kHz
• External memory for variable message
: 1Mb, 2Mb, 4Mb, 8Mb, serial voice flash memory
• Recording time (When the 1Mb serial voice flash is used)
: Approximately 32 seconds (Fsam=8.0 kHz)
: Approximately 40 seconds (Fsam=6.4 kHz)
: Approximately 65 seconds (Fsam=4.0 kHz)
• Built-in 512Kb mask ROM for fixed message
• Playback time for fixed message
: Approximately 15 seconds (Fsam=8.0 kHz)
: Approximately 20 seconds (Fsam=6.4 kHz)
: Approximately 31 seconds (Fsam=4.0 kHz)
• Number of pharase
Variable message : 63 phrases
Fixed message
: 255 phrases
• Any data can be written to and read from a part in the voice flash memory.
• Serial microcontroller interface
• Source oscillation frequency : 4 MHz to 6 MHz
• Supply voltage
: 2.7 V to 3.6 V
• Operating temperature
: –10°C to 70°C
• Package :
30-pin plastic SSOP (SSOP30-P-56-0.65-K)(Product name : MSM9888LGS-AK)
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