MSM6688LTS-K(2002) 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM6688LTS-K
(Rev.:2002)

ADPCM Solid-State Recorder IC

Oki Electric Industry 

OKI Semiconductor

FEDL6688-6688L-04

MSM6688/6688L

(1) STAND-ALONE MODE (FOR MSM6688 (5 V VERSION))

FEATURES

• 3-bit or 4-bit ADPCM

• Built-in 12-bit AD converter

• Built-in12-bit DA converter

• Built-in microphone amplifier

• Built-in low-pass filter

Attenuation characteristics –40 dB/oct

• External memories

Serial registers, 32M bits maximum (for variable messages)

8M bit serial register (MSM6685A) can be driven directly

Serial voice ROMs, 4M bits maximum (for fixed messages)

1M bit serial voice ROM (MSM6595A) can be driven directly

2M bit serial voice ROM (MSM6596A) can be driven directly

3M bit serial voice ROM (MSM6597A) can be driven directly

• Sampling frequency

4.0 kHz, 5.3 kHz, 6.4 kHz or 8.0 kHz (master clock frequency = 4.096 MHz)

8.0 kHz, 10.6 kHz, 12.8 kHz, or 16.0 kHz (master clock frequency = 8.192 MHz)

• Number of phrases

63 phrases for variable messages

63 phrases for fixed messages

• Maximum recording time (when external 32M bit RAM is connected)

34 minutes (for 16 kbps ADPCM)

23 minutes (for 24 kbps ADPCM)

17 minutes (for 32 kbps ADPCM)

• Voice triggered starting function

• Pause function

• Master clock frequency: 4.096 to 8.192 MHz

• Power supply voltage: Single 5 V power supply

• Package:

56-pin plastic QFP (QFP56-P-910-0.65-2K) (MSM6688GS-2K)

4/167

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