Home > Integrated Circuits > Speech Synthesis LSI > ML2280x series

ML2280x series

2M/4M/8M bit speech synthesis LSI with large scale P2ROM

Description

ML2280x
package dimension figure

ML2282X_package

The ML2280x series is a voice synthesis LSI built-in P2ROM 2M/4M/8M for voice and sound data. It has ADPCM2 decoder, D/A converter, low pass filter. ML2280x series realizes all function that is needed to play voice and sound data in one package. P2ROM is LAPIS Semiconductor original programmable ROM technology. Delivery period from ordering will be shorter than current mask ROM products. It can be programmed just before final testing in a manufacturing process. The ML2280x series is very suitable products in system development.

Playback Time

Part number	Memory Type	ROM Capacity (bits)	Maximum Playback Time (s)
Part number	Memory Type	ROM Capacity (bits)	Fs=4.0kHz	Fs=8.0kHz	Fs=16.0kHz
ML22808	P2ROM	8M	524	262	131
ML22804		4M	262	131	65
ML22802		2M	131	65	32

Feature

LONG TIME LARGE NUMBER OF PHRASES AND PLAYBACK MAXIMUM: 524 Second playback time.
MEMORY BANK SWITCHING FUNCTION
The internal ROM area can be divided into up to four areas.
The use of new voice LSI such as enhancing the number of reproduction phrases is offered.
SHORT DELIVERATION FROM ORDERING FOR MP.
LINE-UP 2M/4M/8M MEMORY SIZE ( PIN COMPATIBLE).
LINE-UP OPT VERSION ( PIN COMPATIBLE).

Applications

Specification

Parameter	Specification
Part number	ML2280x
Speech synthesis method	4bit ADPCM2 8bit Nonlinear PCM 8bit PCM, 16bit PCM (can be specified for each phrase)
Sampling frequency Fosc=4.096MHz	4.0k, 5.3k, 6.4k, 8.0k, 10.7k, 12.8k, 16.0kHz (Each phrase can be specified.)
Maximum number of phrases	256 phrases
Memory bank selecting	2 bank (ML22802) 4 bank (ML22804/ML22808)
Power supply voltage	+2.7V to +3.6V
Operating temperature range	-20°C to +85°C
Package	30pin plastic SSOP