MOSEL VITELIC

MSu001/u001T

7/12

PID219D 02/96

Timing Diagram

I. Addressing 6 - bit

AUDIO

BUSY

EB2

TG5(IOB2)

Low

TG4(IOB1)

Low

TG3(IOA4)

TG2(IOA3)

TG1(IOA2)

TG0(IOA1)

S06

S09

AUDIO

BUSY

II. PWR Signal

PWR

One portion of the program to play a sound

CLRM 4h

; #EB2 Low

OUT

PA , R5 ;

OUT

PB , R6 ;

SETM 4h

; #EB2 High

1. When PWR is high , MSu001 audio output signal will stay at approx. 2.4V even there is no audio output .

2. When PWR is low , MSu001 audio output signal will stay at GND level when there is no audio output .

3. For eliminating the "pop" noise purpose , PWR should be at high level when a sound section is played

over , and also at high level in between two sound sections .

4. For energy saving purpose , PWR should not always stay at high level , since there will be a hundred-mA

current consumption when PWR is high . So it should go to low level when its not needed .

StandardCode LineUp

MSSu001-066 Mandarin talking watch/clock

MSSu001-068 English talking watch/clock

MSSu001-078 Russian talking calculator

MSSu001-090 Mandarin talking calculator