R239(W)
9 – 2
25
COM3
OUT Terminal not used.
26-37
SEG0-SEG11
OUT
Segment data signal.
Connected to LCD.The relation between signals are as follows:
LSI signal (Pin No.) LCD (segment) LSI signal (Pin No.) LCD (segment)
SEG 0 (26) ----------------- S 1 SEG 6 (32) ----------------- S 7
SEG 1 (27) ----------------- S 2 SEG 7 (33) ----------------- S 8
SEG 2 (28) ----------------- S 3 SEG 8 (34) ----------------- S 9
SEG 3 (29) ----------------- S 4 SEG 9 (35) ----------------- S10
SEG 4 (30) ----------------- S 5 SEG 10 (36) ---------------- S11
SEG 5 (31) ----------------- S 6 SEG 11 (37) ---------------- S12
38-40
SEG12-SEG14 OUT Terminal not used.
41
P70
OUT
Oven lamp, fan motor and turntable motor driving signal
To turn on and off shut off relay (RY1). The square wave-
form voltage is delivered to the RY1 driving circuit and
RY2 control circuit.
42
P71
OUT Terminal not used.
43
P72
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The signals
holds “L” level during microwave cooking 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.
44
AVDD
IN
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI. Connected to GND.
45-48
AIN5-AIN2
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.
49-50
AIN1-AIN0
IN
This is the terminal to detect the voltage of the signal coming from the touch key.
51
AVSS
IN
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI.
52
P11
IN
To input signal which communicates the door open/close information to LSI.
Door close “H” level signal (0V). Door open “L” level signal (-5V)
53
P10
OUT Terminal not used.
54
P33
OUT
Switch unit strobe signal.
Signal applied to switch unit section. A pulse signal is input to P50 and P52 terminal while one of H8 line button
on switch unit matrix is touched.
55
P32
IN
Signal coming from encoder (SW100).
When the encoder is turned, the contacts of encoder make pulse signals. And pulse signals are input into P32.
56
P31
IN
Signal coming from encoder.
Signal similar to P32. Pulse signals are input into P31.
57
INTP0
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
58
P26
OUT Terminal not used.
59
P25
OUT
Switch unit strobe signal.
Signal applied to switch unit section. A pulse signal is input to P50 and P52 terminal while one of H7 line button
on switch unit matrix is touched.
60
P24
OUT Terminal not used.
61
P23
OUT Terminal not used.
62
P22
OUT Terminal not used.
63
BZO90
OUT
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
64
P20
OUT Terminal not used.
Pin No.
Signal
I/O
Description
20 msec.
During cooking
H : GND
L : -5V
Maximum
output
70% of maximum
output
H : GND
L : -5V
H : GND
L : -5V
ON
ON
OFF
OFF
OFF
24 sec.
8 sec.
20 msec.
H : GND
L : -5V
A
B
0.1 sec.
2.0 sec.
H : GND
L : -5V
H : GND
L : -5V
