FEATURES
aMTP777 Standard CMOS process. Embedded 4K byte EPROM for MCU programming. Embedded 8-bit MCU. Connect external SPI flash to store voice data Combination of voice building blocks to extend playback duration. Table entries are available for voice block combinations. User selectable 10bit/8bit PCM or 4bit ADPCM data compress. Voice Group Trigger Options: Edge / Level; Hold / Un-hold; Retrigger / Non-retrigger. Programmable I/Os, Timer Interrupt and Watch Dog Timer. Built-in oscillator with fixed Rosc, software control sampling frequency 2.4V – 3.6V single power supply and < 5uA low stand-by current. PWM Vout1 and Vout2 drive speaker directly. D/A COUT with ramp-up ramp-down option to drive speaker through an external BJT. Volume control. Maximum 10-bit resolution. Internal Power-up reset circuit built-in; RSTB provides external controlled reset to the chip. DESCRIPTION
Aplus’ Voice data is stored in an external multiprogrammable SPI flash with 4-bit ADPCM compression at different sampling rate.
APLUS
