19
R-25AM
Pin No.
Signal
I/O
Description
DESCRIPTION OF LSI
LSI(IXA222DR)
The I/O signal of the LSI(IXA222DR) is detailed in the following table.
1
VCC
IN
Power source voltage: GND.
VC voltage of power source circuit input. Connected to GND.
2
VEE
IN
Anode (segment) of Fluorescent Display light-up voltage: -35V.
Vp voltage of power source circuit input.
3
AVSS
IN
Reference voltage input terminal.
A reference voltage applied to the A/D converter in the LSI. Connected to DC. (-5V)
4
VREF
IN
Reference voltage input terminal.
A reference voltage applied to the A/D converter in the LSI. Connected to GND.
5-6
AN7-AN6
IN
Terminal to switch the specification.
7
AN5
IN
Temperature measurement input: EXHAUST THERMISTOR
By inputting DC voltage corresponding to the temperature detected by the thermis-
tor, this input is converted into temperature by the A/D converter built into the LSI.
8
AN4
IN
Input signal which communicates the door open/close information to LSI.
Door closed; "H" level signal (0V).
Door opened; "L" level signal (-5.0V).
9
AN3
-
Terminal not used.
10
AN2
IN
Temperature measurement input: MAGNETRON THERMISTOR TH2.
By inputting DC voltage corresponding to the temperature detected by the thermis-
tor, this input is converted into temperature by the A/D converter built into the LSI.
11
AN1
IN
Temperature measurement input: MAGNETRON THERMISTOR TH1.
By inputting DC voltage corresponding to the temperature detected by the thermis-
tor, this input is converted into temperature by the A/D converter built into the LSI.
12
AN0
-
Terminal not used.
13-14
P55-P54
-
Terminal not used.
15
P53
OUT
Magnetron (MG1) high-voltage circuit driving signal.
To turn on and off the cook relay. In 100% power level operation, "L" level during
cooking; "H" level otherwise. In other power level operation (50, 20 or 10%), "H" and
"L" level is repeated according to power level.
Power level
ON
OFF
100%
48sec.
0sec.
50%
26sec.
22sec.
20%
12sec.
36sec.
10%
8sec.
40sec.
16
P52
-
Terminal not used.
17
P51
OUT
Magnetron (MG2) high-voltage circuit driving signal.
To turn on and off the cook relay. In 100% power level operation, "L" level during
cooking; "H" level otherwise. In other power level operation (50, 20 or 10%), "H" and
"L" level is repeated according to power level.
Power level
ON
OFF
100%
48sec.
0sec.
50%
26sec.
22sec.
20%
12sec.
36sec.
10%
8sec.
40sec.
18
P50
-
Terminal not used.
19
P47
OUT
Signal to sound buzzer.
This signal is to control the 2.0kHz
continuous signal.
A: Switch touch sound.
B: Completion sound.
GND
-5V
48 sec.
OFF
ON
GND
-5V
48 sec.
OFF
ON
A
B
0.12 sec
2.4 sec
GND
-5V
