API8208

APLUS VERSATILE 20 SEC INSTANT VOICE ROM FEATURES Minimum 20 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, TG1 to TG4 for eight groups SBT for sequential play-all or random play 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 Built-in oscillator with variable sample rate Single external resistor to determine sample rate Built-in D/A converter, EPROM ADPCM data compression provides high sound quality Optional pop noise elimination function C OUT pin drives speaker with a transistor V OUT1 and VOUT2 drives buzzer or speaker directly Auto-power down 3.0V-6V single power supply operation Low standby current (<5 µ A at 3V) Development tools support API8208A GENERAL DESCRIPTION API8208A is a high quality voice synthesizer capable of varying playback duration. A proprietary ADPCM algorithm is used. The audio message is stored in a 512K bits on-chip EPROM which can store up to 20 seconds of voice data at 6 KHz sample rate. The API8208A eliminates the need of complicated circuitry in voice playback but still achieves high voice quality. Sounds such as human speech, animal sounds, musical sounds and even special sound effects can be synthesized. Versatil...