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UPD7759C

Features: Synthesizing method : ADPCM, PCM + waveform element methods used together Sampling frequency : 5, 6 or 8 kHz Bit rate (speech) : 20 to 32 K bps Number of Messages : 256 (MAX.) External speech data ROMSpeech output : Current sink type analog output, 9-bit D/A converter Host CPU interface ...

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SeekIC No. : 004538300 Detail

UPD7759C: Features: Synthesizing method : ADPCM, PCM + waveform element methods used together Sampling frequency : 5, 6 or 8 kHz Bit rate (speech) : 20 to 32 K bps Number of Messages : 256 (MAX.) External spe...

UPD7759C Data Sheet

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Part Number:
UPD7759C
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/22

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Product Details

Description



Features:

Synthesizing method : ADPCM, PCM + waveform element methods used together
Sampling frequency : 5, 6 or 8 kHz
Bit rate (speech) : 20 to 32 K bps
Number of Messages : 256 (MAX.)
External speech data ROM
Speech output : Current sink type analog output, 9-bit D/A converter
Host CPU interface : Compatible with a 4/8-bit CPU
Standby mode : Pop-noise preventive circuit incorporated
Supply voltage : 2.7 to 5.5 V
CMOS technology


Pinout

Connection Diagram


Specifications

Parameters Symbol Conditions Ratings Unit
Power supply voltage VDD 0.3 to + 7.0 V
Input voltage VI 0.3 to VDD + 0.3 V
Output voltage Vo 0.3 to VDD + 0.3 V
Storage temperature Tstg 40 to +125 °C
Operating temperature Topt 10 to +70 °C



Description

The PD7759 is an external ROM type speech synthesis LSI employing the waveform coding method. In addition to the ROM capability of up to 1 Mbit, the PD7759 realizes the synthesis of speech sounds of any length by using the ADPCM data transferred from an external ROM.

As the synthesizing method, it adopts the ADPCM method and the PCM + waveform element method.The ADPCM method is suitable for synthesizing clear and natural speech sounds, and the PCM + waveform element method is for the synthesis of sound effects and melodies. And by using them together, the PD7759 realizes the long-time synthesis of high-quality sounds.

Because of the short turn-around time of speech analysis, the PD7759 can perform the quick system development using a PROM, or the evaluation of an on-chip ROM type of the PD7755 family.




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