R-290H(S)
16
24
K00
IN
Signal similar to K02.
When either G8 line on key matrix is touched, a corresponding signal will be input into
K00.
25
K01
IN
Signal similar to K02.
When either G9 line on key matrix is touched, a corresponding signal will be input into
K01.
26
K02
IN
Signal coming from touch key.
When either G10 line on key matrix is touched, a corresponding signal out of R00, R01,
R02, R03, P20 and P21 will be input into K02. When no key is touched, the signal is held
at “H” level.
27
K03
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of
LSI.
28
COM0
OUT
Common data signal: COM0.
Connected to LCD (Pin No. COM1)
29
COM1
OUT
Common data signal: COM1.
Connected to LCD (Pin No. COM2)
30
COM2
OUT
Common data signal: COM2.
Connected to LCD (Pin No. COM3)
31
COM3
OUT
Terminal not used.
32-33 SEG0-SEG1
OUT
Terminal not used.
34
SEG2
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.
35
SEG3
OUT
Terminal not used.
36
SEG4
OUT
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.
37-39 SEG5-SEG7 OUT
Terminal not used.
40-51
SEG8-SEG19
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 8 (40) .................... SEG 12
SEG 14 (46) ..................... SEG 6
SEG 9 (41) .................... SEG 11
SEG 15 (47) ..................... SEG 5
SEG 10 (42) .................... SEG 10
SEG 16 (48) ..................... SEG 4
SEG 11 (43) .................... SEG 9
SEG 17 (49) ..................... SEG 3
SEG 12 (44) .................... SEG 8
SEG 18 (50) ..................... SEG 2
SEG 13 (45) .................... SEG 7
SEG 19 (51) ..................... SEG 1
52-53
VC1-VC2
IN
Power source voltage input terminal.
Standard voltage for LCD.
54
VC3
OUT
Terminal not used.
Pin No.
Signal
I/O
Description
GND
-5V
20.0 msec.
H : GND
L : -5V
OFF
ON
ON
OFF
OFF
H : GND
L : -5V
Maximum
output
70% of maximum
output
24 sec.
8 sec.
20.0 msec.
During cooking
H : GND
L : -5V
Содержание R-290H
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