R308KW
9 – 2
23 COM1 OUT
Common data signal.
Connected to LCD signal COM2.
24 COM2 OUT
Common data signal.
Connected to LCD signal COM3.
25 COM3 OUT Terminal not used.
26-39 SEG0-SEG13 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) ----------------- SEG 1 SEG 7 (33) ----------------- SEG 8
SEG 1 (27) ----------------- SEG 2 SEG 8 (34) ----------------- SEG 9
SEG 2 (28) ----------------- SEG 3 SEG 9 (35) ----------------- SEG 10
SEG 3 (29) ----------------- SEG 4 SEG 10 (36) ---------------- SEG 11
SEG 4 (30) ----------------- SEG 5 SEG 11 (37) ---------------- SEG 12
SEG 5 (31) ----------------- SEG 6 SEG 12 (38) ---------------- SEG 13
SEG 6 (32) ----------------- SEG 7 SEG 13 (39) ---------------- SEG 14
40 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 AIN1 IN This is the terminal to detect the voltage of the signal coming from the touch key.
50 AIN0 IN Signal similar to AIN1.
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 Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal while one of G1
line keys on key matrix is touched.
55 P32 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal while one of G2
line keys on key matrix is touched.
56 P31 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal while one of G3
line keys on key matrix is touched.
57 INTP0 IN Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
58 P26 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal while one of G4
line keys on key matrix is touched.
59 P25 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal while one of G5
line keys on key matrix is touched.
60 P24 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal while one of G6
line keys on key matrix is touched.
61 P23 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P50, P51, P52 and P53 terminal while one of G7
line keys on key matrix is touched.
Pin No. Signal I/O Description
16.7 msec.
During cooking
H:GND
L:-5V
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