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10
771M -
TOUCH CONTROL / DESCRIPTION OF LSI
LSI(IZA929DR)
The I/O signal of the LSI(IZA929DR) are detailed in the following table.
Pin No.
Signal
I/O
Description
ON
OFF
During cooking, or for 5 minutes or more
after grill cooking or dual cooking
after grill cooking or dual cooking
L
GND
H.
A
B
C
H: GND
L
0.12 sec
2.4 sec
1.2 sec
1.2 sec
20 msec
During cooking
H
L
ON
OFF
During
cooking
L
GND
H.
(Grill or dual)
ON
OFF
During
cooking
L
GND
H.
(Grill or dual)
ON/OFF time ratio in Mi-
cro cooking
(a. 32second time base)
cro cooking
(a. 32second time base)
ON/OFF time ratio in Mi-
cro cooking
(a. 48second time base)
cro cooking
(a. 48second time base)
MICRO
ON
OFF
COOK
100%
32sec.
0sec.
70%
24sec.
8sec.
50%
18sec.
14sec.
30%
12sec.
20sec.
10%
6sec.
26sec.
MICRO
ON
OFF
COOK
100%
48sec.
0sec.
70%
36sec.
12sec.
50%
26sec.
22sec.
30%
16sec.
32sec.
10%
8sec.
40sec.
1
C1
IN
Terminal not used.
2
VL1
IN
Power source voltage input terminal.
Standard voltage for LCD.
3-6
AN7-AN4
IN
Terminal to change cooking constant.
7
AN3
IN
Terminal not used.
8
AN2
IN
Input signal which communicates the door open/close information to LSI.
Door closed; "H" level signal.
Door opened; "L" level signal.
Door opened; "L" level signal.
9
AN1
IN
Terminal not used.
10
AN0
IN
Temperature measurement input: OVEN THERMISTOR.
By inputting DC voltage corresponding to the temperature detected by the
thermistor, this input is converted temperature by the A/D converter built into the
LSI.
thermistor, this input is converted temperature by the A/D converter built into the
LSI.
11-12
P57-P56
OUT
Timing signal output terminal for temperature measurement (OVEN).
"L" level (-5V) : Temperature measuring timing. (Oven cooking)
"H" level (GND) : Thermistor open timing.
"H" level (GND) : Thermistor open timing.
13
P55
OUT
Fan motor driving signal.
To turn on and off the fan motor relay
RY5. "L" level during cooking, or for 5
minutes or more after grill cooking or
dual cooking. "H" level otherwise.
RY5. "L" level during cooking, or for 5
minutes or more after grill cooking or
dual cooking. "H" level otherwise.
14
CNTR0
OUT
Signal to sound buzzer.
A: key touch sound.
B: Completion sound.
C: When the temperature of the oven cavity
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.
preheating mode, or when the
preheating hold time (30 minutes) is
elapsed.
15
P53
OUT
Oven lamp and turntable motor driving signal(Square Waveform : 50Hz).
To turn on and off shut-off relay (RY1). The
square waveform voltage is delivered to
the relay (RY1) driving circuit and relays
(RY2,RY3,RY4) control circuit.
square waveform voltage is delivered to
the relay (RY1) driving circuit and relays
(RY2,RY3,RY4) control circuit.
16
P52
OUT
Bottom heating element driving signal.
To turn on and off the bottom element relay
(RY4). "L" level during grill (BOTTOM
HEATER, TOP AND BOTTOM) cooking or
dual (Dual 2) cooking; "H" level otherwise.
(RY4). "L" level during grill (BOTTOM
HEATER, TOP AND BOTTOM) cooking or
dual (Dual 2) cooking; "H" level otherwise.
17
P51
OUT
Grill heating element (TOP GRILL) driving signal.
To turn on and off the grill heating element
relay (RY3). "L" level during grill (TOP
GRILL, TOP AND BOTTOM) cooking or
dual (Dual 1) cooking; "H" level otherwise.
relay (RY3). "L" level during grill (TOP
GRILL, TOP AND BOTTOM) cooking or
dual (Dual 1) cooking; "H" level otherwise.
18
P50
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook
relay (RY2). 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.
relay (RY2). 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.
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