LAPIS Semiconductor Co., Ltd. 
Speech Synthesis LSI Line up
Application
Foundry Service
Description
ML2280x
package dimension figure
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) | ||
|---|---|---|---|---|---|
| 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 |
Block Diagram
ML22808/ML22804
ML22802
Application Circuit Examples
ML22808/ML22804
ML22802
