22C040 Datasheet PDF

GENERAL DESCRIPTION

ISSI OCTOBER 1998 ISSI ® ®

FEATURES

● Voice length at – 8 KHz sampling is 32 seconds – 6 KHz sampling is 40 seconds
● Silence compression to save memory
● Eight trigger pins, S1 to S8 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 interval
● 3.0V to 6V single power supply operation
● Low standby current (<5 µA 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 IS22C040 is a high-quality voice synthesizer with a capacity of 32 to 40 seconds. A proprietary ADPCM algorithm is used.