Instant Voice IC aIVR4208 for 42 second

Standard

Specifications

FEATURES
 
z  Standard CMOS process.
z  Embedded EPROM.
z  Embedded 8-bit MCU.
z  10, 21 and 42sec voice duration at 6 KHz sampling with 4-bit ADPCM compression.
z  Combination of voice building blocks to extend playback duration.
z  Table entries are available for voice block combinations.
z  User selectable PCM or ADPCM data compress.
z  Voice Group Trigger Options: Edge / Level; Hold / Un-hold; Retrigger / Non-retrigger.
z  Programmable I/Os, Timer Interrupt and Watch Dog Timer.
z  Built-in oscillator with fixed Rosc, software control sampling frequency
z  2.2V – 3.6V single power supply and < 5uA low stand-by current.
z  PWM Vout1 and Vout2 drive speaker directly.
z  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.  It is fabricated with Standard CMOS process
with embedded voice storage memory.  It can store from 10 to 42sec 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 twelve 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.

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