●Standard CMOS process.
●Embedded 8-bit MCU.
●85sec 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 with two levels of volume
●D/A COUT with ramp-up ramp-down option to drive speaker through an external
Aplus’ aIVR8511 is a 8-bit MCU based Voice chip. It is fabricated with Standard CMOS process with embedded voice storage
memory. It can store 85sec 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. There are eleven programmable I/O pins. Key trigger and Parallel CPU
trigger mode can be configured according to different application requirement. User selectable triggering and output signal
options provide maximum flexibility to various applications. Built-in resistor controlled oscillator, 8-bit current mode D/A output
and PWM direct speaker driving output minimize the number of external components. Two levels volume control for PWM
speaker direct drive is available.