23
R-84ST -
DESCRIPTION OF LSI
LSI(IZA965DR)
The I/O signal of the LSI(IZA965DR) are detailed in the following table.
Pin No. Signal I/O Description
A
B
C
H: GND
L
0.12 sec
2.4 sec
1.2 sec
1.2 sec
20 msec.
H : GND
L (-5V)
1 C1 IN Terminal not used.
2 VL1 IN
Power source voltage input terminal.
Standard voltage for LCD.
3 AN7 IN Terminal to change the on timing of the cook relay (RY2).
4-5 AN6-AN5 IN Heating constant compensation terminal.
6 AN4 OUT Terminal not used.
7 AN3 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.
8 AN2 IN Input signal which communicates the door open/close information to LSI.
Door closed; "H" level signal.
Door opened; "L" level signal.
9-10 AN1-AN0 OUT Terminal not used.
11 P57 OUT Timing signal output terminal for temperature measurement(OVEN
THERMISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing. (Convection cooking)
12 P56 OUT 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.
13 P55 OUT Timing signal output terminal for temperature measurement(OVEN
THERMISTOR).
"H" level (GND) : Thermistor OPEN timing.
"L" level (-5V) : Temperature measuring timing. (Convection cooking)
14-18 P54-P50 OUT Terminal not used.
19 P47 IN Signal coming from touch key.
When any one of G12 line keys on key matrix is touched, a corresponding
signal from P40, P41, P72, P73, P74, P75, P76 and P77 will be input into P47.
When no key is touched, the signal is held at "L" level.
20 P46 IN Signal similar to P47.
When any one of G11 line keys on key matrix is touched, a corresponding
signal will be input into P46.
21 P45 IN Signal similar to P47.
When any one of G10 line keys on key matrix is touched, a corresponding
signal will be input into P45.
22 P44 IN Signal similar to P47.
When any one of G9 line keys on key matrix is touched, a corresponding signal
will be input into P44.
23 INT1 OUT Terminal not used.
24 INT0 IN Signal to synchronized LSI with commercial power source
frequency(50Hz).
This is basic timing for time processing
of LSI.
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