FEATURES
Standard CMOS process. Embedded EPROM. Embedded 8-bit MCU. 10, 21 and 42sec voice duration at 6 KHz sampling with 4-bit ADPCM compression. Combination of voice building blocks to extend playback duration. Table entries are available for voice block combinations. User selectable PCM or 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 2.2V – 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. DESCRIPTION
Aplus’ aIVR is a 8-bit CPU based Voice chip series. 8-bit PCM is also available as user selectable option to improve sound quality. Depending on IC body, there are up to twelve programmable I/O pins. Key trigger and Parallel CPU trigger mode can be configured according to different application requirement.
APLUS
