Integrated Circuits Inc.

aMTP777

MAY 10, 2011

2

FEATURES

Standard CMOS process.

Embedded 4K byte EPROM for MCU programming.

Embedded 8-bit MCU.

Connect external SPI flash to store voice data

Combination of voice building blocks to extend playback duration.

Table entries are available for voice block combinations.

User selectable 10bit/8bit PCM or 4bit 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 10-bit resolution.

Internal Power-up reset circuit built-in; RSTB provides external controlled reset to the chip.

DESCRIPTION

Aplus’ aMTP777 is a 4K-byte 8-bit MCU based Voice controller IC. It is fabricated with Standard

CMOS process with embedded voice storage memory. Voice data is stored in an external multi-

programmable SPI flash with 4-bit ADPCM compression at different sampling rate. 10-bit/8-bit PCM

is also available as user selectable option to improve sound quality. There are upto nineteen

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, 10-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.