GENERAL DESCRIPTION
IS22C012 is a high quality voice synthesizer capable of varying playback duration. A proprietary ADPCM algorithm is used. The audio message is stored in a 256K bits on chip EPROM which can store up to ten seconds of voice data at 6 KHz sample rate.

FEATURES
• Minimum 10 second voice length at 6 KHz
• Versatile features for playback
• Combination of voice building blocks extends the duration of playback
• Voice data re-use saves memory space
• Four trigger pins, S1 to S4 for eight groups
• SBT for sequential play-all
• Holdable and unholdable, edge and level triggering option
• 15 ms debounce time suitable for CDS
• IRP interrupt pin for master reset
• Three programmable output pins for STP Stop Pulse, BUSY Signal, and LED