Sharp R-1480, R-1482, R-1481 Description Of Lsi, LSIIZA876DR, Pin No, Signal, Power source voltage

R-1480

R-1481

R-1482

DESCRIPTION OF LSI

LSI(IZA876DR)

The I/O signals of the LSI(IZA876DR) are detailed in the following table.

Pin No.

Signal

I/O

Description

1

VCC

IN

Connected to GND.

2

VEE

IN

Anode (segment) of Fluorescent Display illumination voltage: -31V.

Vp voltage of power source circuit input.

3

AVSS

IN

Power source voltage:-5V.

VC voltage of power source circuit input.

4

VREF

IN

Reference voltage input terminal.

A reference voltage applied to the A/D converter in the LSI. Connected to GND.(0V)

5-6

AN7-AN6

IN

Terminal not used.

7-9

AN5-AN3

IN

Heating constant compensation terminal.

10

AN2

IN

Input signal which communicates the door open/close information to LSI.

Door closed; "L" level signal(0V).

Door opened; "H" level signal(-5V).

11-12

AN1-AN0

IN

Connected to GND(0V).

13

P55

OUT

Terminal not used.

14

P54

OUT

Oven lamp, Stirrer motor and Fan motor driving signal. (Square Waveform : 60Hz)

To turn on and off the shut-off relay(RY1). The

16.7 msec.

H

square waveform voltage is delivered to the

relay(RY1) driving circuit.

L

During cooking

15

P53

OUT

Turntable motor driving signal.

To turn on and off relay(RY3). "L" level: During

H : GND

OFF

Turntable ON. "H" level: During Turntable OFF or

ON

L

during the oven is off condition.

16

P52

OUT

Terminal not used.

17

P51

OUT

Magnetron high-voltage circuit driving signal.

To turn on and off the cook

VARI-MODE

ON TIME

OFF TIME

relay(RY2). In P-HI operation, the

P-HI (100% power)

32 sec.

0 sec.

signals holds "L" level during mi-

P-90 (approx. 90% power)

30 sec.

2 sec.

crowave cooking and "H" level

P-80 (approx. 80% power)

26 sec.

6 sec.

while not cooking. In other cook-

P-70 (approx. 70% power)

24 sec.

8 sec.

ing modes (P-90,P-80,P-70,P-

P-60 (approx. 60% power)

22 sec.

10 sec.

60,P-50,P-40,P-30,P-20,P-10,P-

P-50 (approx. 50% power)

18 sec.

14 sec.

0) the signal turns to "H" level and

P-40 (approx. 40% power)

16 sec.

16 sec.

"L" level in repetition according to

P-30 (approx. 30% power)

12 sec.

20 sec.

the power level.

P-20 (approx. 20% power)

8 sec.

24 sec.

P-10 (approx. 10% power)

6 sec.

26 sec.

P-0 (0% power)

0 sec.

32 sec.

18

P50

OUT

Terminal not used.

19

P47

OUT

Hood lamp driving signal.

To turn on and off solid state relay(SSR1). "1"

AC

CURRENT

level: During Hood lamp ON (WORK LIGHT level).

H

WORK

"2" level: During Hood lamp ON (NIGHT LIGHT

1

LIGHT

L

level). "H" level: During Hood lamp OFF.

NIGHT

H

2

LIGHT

L

20

P46

OUT

Hood motor driving signal.

H : GND

OFF

To turn on and off relay(RY9). "L" level: During Hood

ON

L

motor ON. "H" level: During Hood motor OFF.

21

P45

OUT

Hood motor high / low driving signal.

H : GND

To turn on and off relay(RY5). "L" level: During Hood

OFF

motor high. "H" level: During Hood motor low.

ON

L

22