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R352M - 10
DESCRIPTION OF LSI
LSI(IZA954DR)
The I/O signal of the LSI(IZA954DR) are detailed in the following table.
Pin No.
Signal
I/O
Description
20.0 msec.
During cooking
H : GND
L : -5V
100P
H : GND
L : -5V
H : GND
L : -5V
70P
ON
ON
OFF
OFF
OFF
24 sec.
8 sec.
20.0 msec.
H : GND
L : -5V
A
B
0.12 sec.
2.4 sec.
H : GND
L : -5V
H : GND
L : -5V
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.
the Model in operation is applied to set up its cooking constant.
7-8
P63-P62
OUT
Terminal not used.
9
AN1
IN
To input signal which communicates the door open/close information to
LSI.
LSI.
Door close "H" level signal (0V). Door open "L" level signal (-5V).
10
P60
OUT
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
Oven lamp, fan motor and turntable motor driving signal
To turn on and off shut off relay (RY1).
The square waveform voltage is deliv-
ered to the RY1 driving circuit and RY3
control circuit.
The square waveform voltage is deliv-
ered to the RY1 driving circuit and RY3
control circuit.
16
P52
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY3).
The signals holds "L" level during mi-
crowave cooking and "H" level while
not cooking. In other cooking modes
(variable cooking) the signal turns to
"H" level and "L" level in repetition ac-
cording to the power level.
The signals holds "L" level during mi-
crowave cooking and "H" level while
not cooking. In other cooking modes
(variable cooking) the signal turns to
"H" level and "L" level in repetition ac-
cording to the power level.
(ON and OFF times for other power level.)
17-18
P51-P50
OUT
Terminal not used.
19
P47
OUT
Terminal not used.
20
P46
IN
Signal coming from touch key.
When either G12 line on key matrix is touched, a corresponding signal out of
P20 - P27 will be input into P46. When no key is touched, the signal is held at
"H" level.
P20 - P27 will be input into P46. When no key is touched, the signal is held at
"H" level.
21
P45
IN
Signal similar to P46.
When either G11 line on key matrix is touched, a corresponding signal will be
input into P45.
input into P45.
22
P44
IN
Signal similar to P46.
When either G10 line on key matrix is touched, a corresponding signal will be
input into P44.
input into P44.
23
P43
IN
Signal similar to P46.
When either G9 line on key matrix is touched, a corresponding signal will be
input into P43.
input into P43.
24
INT0
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time process-
ing of LSI.
ing of LSI.
25
P41
OUT
Terminal not used.
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