API8208A

• Minimum 20 second voice length at 6 KHz
• Versatile features for playback
• C ombination of voice building blocks extends the duration of playback
• V oice 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 levle triggering option
• 15 ms debounce time suitable for CDS
• I RP interrupt pin for master reste
• Three programmable output pins for STP StopPulse, BUSY Signal, and LED
• Built-in oscillator with variable sample raet
• S ingle external resistor to determine sample raet
• Built-in D/A converter, EPROM
• ADPCM data compression quality provides high sound
• O ptional pop noise elimination function
•COUT pin drives speaker with a transistor
• VOUT1 and V OUT2 drives buzzer or speaker directly
• Auto-power down
• 3.0V-6V single power supply operation
• Low standby current (<5 A at 3)V
• Development tools suppotr

API8208A is a high quality voice synthesizer capable of  arying 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.Versatile combinations in sections achieve longer playback   duration. In addition, devices can be cascaded to achieve  longer voice duration. Two devices can be configured in   parallel in order to achieve signal mixing without an  external mixer in which speech can be mixed with   background music each from one of two different chips.   The API8208A provides wide operating voltage range  from 3.0V to 6.0V. PWM digital amplifier output pins, VOUT1 and V OUT2 provides direct drive to buzzer or speaker.  
       
The API8208A provides wide operating voltage ranget  from 3.0V to 6.0V. PWM digital amplifier output pins    VOUT1 and V OUT2 provides direct drive to buzzer or  speaker.

A current output pin, COUT, enables the device to drive a  speaker through a low cost NPN transistor. No complex  filtering or amplifier circuit is needed. An automaticramp-down function eliminates undesired noise at the end  of playback..com