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