Integrated Circuits Inc.
FEATURES
Standard CMOS process.
Embedded EPROM.
aIVR341N
Embedded 8-bit MCU.
341sec 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
2.4V – 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 9-bit resolution.
Internal Power-up reset circuit built-in; RSTB provides external controlled reset to the chip.
DESCRIPTION
Aplus’ aIVR341N is a 8-bit MCU based Voice chip. It is fabricated with Standard CMOS process
with embedded voice storage memory. It can store 341sec 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 upto fifteen 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, 9-bit resolution current mode D/A output and PWM direct speaker driving minimize the
number of external components. Volume control for both DAC and VOUT output is available.
3
SEP 15, 2011
APLUS [ APLUS INTERGRATED CIRCUITS ]
