HT8658 - Holtek Semiconductor

HT8658 (HT8658 / HT8659) Voice Recorder

The HT8658/HT8659 are single chip CMOS LSIs using an ADM coding technology. They are designed for applications on recording sounds. The HT8658 and HT8659 have almost the same functions apart from the reset time. The reset time of the HT8658 has to be over 4 seconds but of the HT8659 over 2 seconds. Blocks within each chip include a DRAM interface circuit, si.

Features

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• Single power supply: 4.5V~5.5V ADM coding algorithm DRAM options:
  – 4×256K bits
  – 3×1M bits A built-in 2 stage MIC amplifier A built-in low pass filter
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• Data rate options (bits per second):
  – 32K bps
  – 22K bps
  – 16K bps
  – 11K bps A status LED indicator Auto playback Applications
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• Message box Recorder
• Toys General Description The HT8658/HT8659 are single chip CMOS LSIs using an ADM coding technology. They are designed for applications on recording sounds. The HT8658 and HT8659 have almost the same functions apart from the reset time. The reset .