Integrated Circuits Inc.

aIVR2104/4208

MAR 12, 2015

2

FEATURES

Standard CMOS process.

Embedded EPROM.

Embedded 8-bit MCU.

10, 21 and 42sec 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.

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.

Part Number

Duration

Programmable IO

aIVR2104

21 sec

4

aIVR4208

42 sec

8