●Embedded OTP memory and 8-bit MCU
●Built-in oscillator and Power On Reset circuits to reduce external components.
●2.2V – 3.6V single power supply and < 5uA low stand-by current.
●21sec 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.
●PWM Vout1 and Vout2 drive speaker directly with 2 levels volume control.
●D/A COUT with ramp-up ramp-down option to drive speaker through an external
●Windows based development system and USB programmer support.
Aplus’ aIVR3K is a 8-bit CPU based Voice chip series. It is fabricated with Standard CMOS process with
embedded voice storage OTP memory. It can store 21sec voice message with 4-bit ADPCM compression
at 6KHz sampling rate.8-bit PCM is also available as user selectable option to improve sound quality.
Depending on IC body, there are up to eight programmable I/O pins. Key trigger and Parallel CPU trigger
mode can be configured according to different application requirements. User selectable triggering and
output signal options provide maximum flexibility to various applications. Fully integrated system oscillator,
power-on reset, 8-bit current mode D/A output and PWM direct speaker driving output to minimize external
components count. Two level volume control for PWM direct speaker driving output.