8
R-409JS
1-2
VL2-VL1
IN Power source voltage input terminal.
Standard voltage for LCD.
3-6 AN7-AN4 IN
Terminal to change cooking input according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the Model
in operation is applied to set up its cooking constant.
7 AN3 IN Signal coming from touch key.
When either G13 line on key matrix is touched, a corresponding signal out of P20 - P27
will be input into AN3. When no key is touched, the signal is held at “H” level.
8 AN2 IN
To input signal which communicates the door open/close information to LSI.
Door close "H" level signal (0V). Door Open "L" level (-5V).
9 AN1 IN Terminal not used.
10 AN0 IN Terminal not used.
11-13 P57-P55 OUT Terminal not used.
14 CNTR0 OUT
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
15 P53 OUT Terminal not used.
16 P52 OUT Oven lamp, fan motor and turntable motor driving signal
To turn on and off shut off relay (RY1). The
square waveform voltage is delivered to the
RY1 driving circuit and RY2 control circuit.
17 P51 OUT Terminal not used.
18 P50 OUT Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds “L” level during microwave cook-
ing and “H” level while not cooking. In other
cooking modes (variable cooking) the signal
turns to “H” level and “L” level in repetition
according to the power level.
19 P47 IN Signal similar to AN3.
When either G13 line on key matrix is touched, a corresponding signal will be input into
P46.
20 P46 OUT Terminal not used.
21 P45 IN Signal similar to AN3.
When either G12 line on key matrix is touched, a corresponding signal will be input into
P45.
22-23 P44-P43 OUT Terminal not used.
24 INT0 IN Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
DESCRIPTION OF LSI
LSI
The I/O signal of the LSI is detailed in the following table.
Pin No. Signal I/O Description
A
B
0.1 sec.
2.0 sec.
H : GN
To Next Page
Loading...
Need help?
General
