Integrated Circuits Inc.

aIVR341N

July 30, 2013

3

FEATURES

Standard CMOS process.

Embedded EPROM.

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.