W528SXX

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1. GENERAL DESCRIPTION

The W528Sxx family is programmable speech synthesis ICs that utilize the ADPCM coding method to

generate all types of voice effects.

The W528Sxx's LOAD and JUMP commands and four programmable registers provide powerful user-

programmable functions that make this chip suitable for an extremely wide range of speech IC

applications.

The W528Sxx family includes 9 kinds of part numbers with the same function except for the voice

duration shown below:

ITEM

W528S03

W528S05

W528S08A

W528S10

W528S12

W528S15

Second

3 Sec

5 Sec

8 Sec

10 Sec

12 Sec

15 Sec

ITEM

W528S20

W528S25

W528S30

Second

20 Sec

25 Sec

30 Sec

Note: The voice durations are estimated by various sampling rate.

2. FEATURES

•

Programmable speech synthesizer

•

Wide operating voltage range: 2.4 to 5.5 volts

•

4-bit ADPCM synthesis method

•

Provides 4 direct trigger inputs that can easily be extended to 8 or 12 matrix trigger inputs

•

Two trigger input debounce times (20 to 40 mS or 160 to 320

µS) can be set

•

Provides up to 2 LEDs and 3 STOP outputs

•

Every LED pin can drive 3 LEDs simultaneously

•

LED flash frequency: 3 Hz

•

AUD output current: 5 mA

•

Flexible functions programmable through the following:

− LD (load), JP (jump) commands

− Four registers: R0, EN, STOP, and MODE

− Conditional instructions

− Speech equation

− END instruction

− Global repeat (GR) setting

− Output frequency and LED flash type setting

•

Programmable power-on initialization (POI) (can be interrupted by trigger inputs)

•

POI delay time of 160 mS ensures stable voltage when chip is powered on

•

Can be programmed for the following functions: