GENERAL DESCRIPTION
API840N is a high-quality voice synthesizer with a capacity of 32 to 40 seconds. A proprietary ADPCM algorithm is used. The audio message is stored in a 1024-Kbit on-chip EPROM.

FEATURES
* Voice length at
    - 8 KHz sampling is 32 seconds
    - 6 KHz sampling is 40 seconds
* Silence compression to save memory
* Eight trigger pins,TG1 to TG8 for 32 sections
* SBT pin play-all or sequential play-all
* 15 ms debounce time suitable for CDS
* IRP interrupt pin stops playback at once
* STP stop pulse generated at end of playback
* BUSY signal for CPU control
* Two LEDs flash at 3 Hz internal
* 3.0V to 6V single power supply operation
* Low standby current (<5 mA at 3V)
* Auto-power down
* Built-in oscillator, D/A converter, EPROM
* ADPCM data compression
* Optional pop noise elimination function
* COUT pin drives speaker with a transistor
* Development tools support
* VOUT1 and VOUT2 drives buzzer directly
* Sampling rate determined by external resistor
* Holdable and unholdable triggering option
* Industrial temperature available