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R-310AK
R-330AK
R-330AW
LSI(IZA757DR) : R-330AK/AW
The I/O signal of the LSI(IZA757DR) is detailed in the following table.
Pin No.
Signal
1
C1
2
VL1
3-6
AN7-AN4
7
AN3
OUT
8
AN2
9
AN1
10
AN0
11-13
P57-P55
OUT
14
P54
OUT
15-18
P53-P50
OUT
19-23
P47-P43
OUT
24
INT0
25-26
P41-P40
OUT
27
P77
28
P76
29
P75
30
P74
31
P73
OUT
32
P72
OUT
DESCRIPTION OF LSI
I/O
IN
Terminal not used.
IN
Power source voltage input terminal.
Standard voltage for LCD.
IN
Terminal to change cooking constant 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.
Terminal not used.
IN
To input signal which communicates the door open/close information to LSI.
Door closed; "H" level signal (0V).
Door opened; "L" level signal (-5V).
IN
AH sensor input.
This input is an analog input terminal from the AH sensor circuit, and connected to the A/D
converter built into the LSI.
IN
Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an
analog input terminal from the AH sensor circuit, and connected to the A/D converter built into
the LSI.
Terminal not used.
Signal to sound buzzer (2.0KHz).
A: key touch sound.
B: Completion sound.
Terminal not used.
Used for initial balancing of the bridge circuit (absolute humidity sensor).
IN
Signal synchronized with commercial power source frequency.
This is basic timing for time processing of LSI.
Terminal not used.
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 P77. When no key is touched, the signal is held at "H" level.
IN
Signal similar to P77.
When either G11 line on key matrix is touched, a corresponding signal will be input into P76.
IN
Signal similar to P77.
When either G10 line on key matrix is touched, a corresponding signal will be input into P75.
IN
Signal similar to P77.
When either G9 line on key matrix is touched, a corresponding signal will be input into P74.
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.
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.
Description
A
B
P-HI
P-70
4
0.1 sec.
H : GND
L : -5V
2 sec.
H : GND
L : -5V
16.7 msec.
16.7 msec.
H : GND
L : -5V
During cooking
OFF
H : GND
ON
L : -5V
OFF
OFF
H : GND
24 sec.
8 sec.
ON
L : -5V
H : GND
L : -5V
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