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MSM6688

OKI electronic componets
Part Number MSM6688
Manufacturer OKI electronic componets
Description ADPCM Solid-State Recorder IC
Published Nov 14, 2005
Detailed Description E2D0026-27-43 ¡ Semiconductor MSM6688/6688L ADPCM Solid-State Recorder IC This version: Jan. 1998 Previous version: Ma...
Datasheet PDF File MSM6688 PDF File

MSM6688
MSM6688


Overview
E2D0026-27-43 ¡ Semiconductor MSM6688/6688L ADPCM Solid-State Recorder IC This version: Jan.
1998 Previous version: May.
1997 GENERAL DESCRIPTION The MSM6688/6688L is a “solid-state recorder” IC developed using the ADPCM method.
By externally connecting a microphone, a speaker, a speaker drive amplifier, and a dedicated register to store ADPCM data, it can record and play back voice data in a manner similar to a tape recorder.
The MSM6688 supports 5 V operation and has a stand-alone mode and a microcontroller interface mode.
The MSM6688L supports 3 V operation and controls recording/playback in microcontroller interface mode.
In the stand-alone mode, recording/playback conditions can be selected by pins and the MSM6688/ 6688L can be controlled by a simple drive timing.
In the microcontroller interface mode, recording/ playback can be controlled by commands from the microcontroller.
In the microcontroller interface mode, the MSM6688/6688L is much more flexible than in the stand-alone mode.
In addition, the MSM6688/6688L can form easily a recording and playback circuit with fixed messages by connecting serial registers and serial voice ROMs as external memories.
Note: This data sheet explains a stand-alone mode and a microcontroller interface mode, separately.
Differences Between MSM6688 and MSM6688L Parameter Operating voltage Control mode Full scale of A/D and D/A converters Voice detection level for voice triggered starting External-only register MSM6688 3.
5 to 5.
5 V Standalone mode, Microcontroller interface mode 0 to VDD ± VDD , ± VDD , ± VDD 64 32 16 32M bits (max.
) 4M bits (MSM6684B) 8M bits (MSM6685) MSM6688L 2.
7 to 3.
6 V Microcontroller interface mode only 1 V to 3 V DD DD 4 4 ± VDD , ± VDD , ± VDD 128 64 32 4M bits (max.
) 4M bits (MSM66V84B) 1/159 ¡ Semiconductor MSM6688/6688L CONTENTS (1) STAND-ALONE MODE (for MSM6688 (5 V Version)) (2) MICROCONTROLLER INTERFACE MODE (for MSM6688 (5 V Version) FEATURES .
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