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R-55TS
LSI
The I/O signal of the LSI is detailed in the following table.
Pin No.
Signal
I/O
1-2
VL2-VL1
3-5
AN7-AN5
6
AN4
OUT
7
AN3
8
AN2
9
P61
OUT
10
AN0
11
P57
12
P56
OUT
13
P55
OUT
14
P54
OUT
15
P53
OUT
16
P52
OUT
17
P51
OUT
DESCRIPTION OF LSI
IN
Power source voltage input terminal.
Standard voltage for LCD.
IN
Terminal to change functions according to the model.
DC voltage in accordance with the model in operation is applied to set up its function.
Terminal not used.
IN
Terminal not used.
IN
Input signal which communicates the door open/close information to LSI.
Door closed; "H" level signal.
Door opened; "L" level signal.
Terminal not used.
IN
Temperature measurement input: OVEN THERMISTOR.
By inputting DC voltage corresponding to the temperature detected by the thermistor, this
input is converted into temperature by the A/D converter built into the LSI.
IN
Terminal not used.
Oven lamp and turntable motor driving signal(Square Waveform : 60Hz).
To turn on and off shut-off relay (RY1). The
square waveform voltage is delivered to the relay
(RY1) driving circuit.
Terminal not used.
Signal to sound buzzer.
A: key touch sound.
B: Completion sound.
C: When the temperature of the oven cavity
reaches the preset temperature in the
preheating mode, or when the preheating
hold time (30 minutes) is elapsed.
Magnetron high-voltage circuit driving signal.
To turn on and off the select relay. In 100%
POWER operation, the signals hold "L" level
during microwave cooking and "H" level while not
cooking. In other cooking modes (70%, 50%,
30%, 10%) the signal turns to "H" level and "L"
level in repetition according to the power level.
Fan motor driving signal.
To turn on and off the fan motor relay RY5. "L"
level during cooking, or after grill cooking or bake
cooking. "H" level otherwise.
Upper heater driving signal.
To turn on and off the upper heater relay (RY3).
"L" level during GRILL1, GRILL2 cooking or Bake
cooking. "H" level otherwise.
Description
ON
22
16.7 msec.
During cooking
0.1 sec.
A
2.0 sec.
B
1.0 sec.
1.0 sec.
B
ON/OFF time ratio in micro cooking
(a 32 second time base)
MICRO
COOK
ON
OFF
100 %
32 sec.
0 sec.
70 %
24 sec.
8 sec.
50 %
18 sec.
14 sec.
30 %
12 sec.
20 sec.
10 %
6 sec.
26 sec.
OFF
H : GND
L
During cooking, after grill
cooking or bake cooking
OFF
H : GND
ON
L
(During Grill1, Grill2 or Bake cooking)
H
L
H : GND
L
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