AP8921A RoHS
· Standard CMOS process.
· Embedded 512K/256K bits EPROM.
· 21/10 sec Voice Length at 6KHz sampling and 4-bit ADPCM compression.
· Maximum 12 voice groups.
· Combination of voice blocks to extend playback duration.
· 960 table entries are available for voice block combinations.
· User selectable PCM or ADPCM data compression.
· Two triggering modes are available (EPROM programmable options).- Key Trigger Mode – Combinations of S1 ~ S4 to trigger 12 Voice Groups; SBT
sequential trigger is possible.
- CPU Parallel Trigger Mode – Combinations of S1 ~ S4 with SBT goes HIGH to
strobe start the voice playback.
· Voice Group Trigger Options: Edge / Level; Hold / Un-hold; Retrigger / Non-retrigger.
· Whole Chip Options: Ramp / No-ramp; Output Options; Key / CPU trigger mode.
· 16ms (@ 8KHz sampling rate) Debounce Time in Key Trigger Mode.
· 65us (@ 8KHz sampling rate) Debounce Time in CPU Parallel Trigger Mode.
· RST pin set to HIGH to stop playback at once.
· Two user programmable outputs for STOP pulse, BUSY signal and flashing LED.
· Built-in oscillator to control sampling frequency with an external resistor.
· 2.6V – 5.0V;Wide range single power supply and < 5uA low stand-by current.
· PWM Vout1 and Vout2 drive speaker directly.
· D/A COUT to drive speaker through an external BJT.
· Development System support voice compilation and options selection.