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R-1500
R-1501
R-1505
R-1506
15 P53 OUT Terminal not used.
16 P52 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.
17-18 P51-P50 OUT Terminal not used.
19 P47 OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds "L" level during microwave cook-
ing 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.
(ON and OFF times for other power level.)
20 P46 IN
Signal coming from touch key.
When either G12 line on key matrix is touched, a corresponding signal out of P20 - P27 will
be input into P46. When no key is touched, the signal is held at "H" level.
21 P45 IN
Signal similar to P46.
When either G11 line on key matrix is touched, a corresponding signal will be input into P45.
22 P44 IN
Signal similar to P46.
When either G10 line on key matrix is touched, a corresponding signal will be input into P44.
23 P43 IN
Signal similar to P46.
When either G9 line on key matrix is touched, a corresponding signal will be input into P43.
24 INT0 IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
25 P41 OUT Terminal not used.
26 P40 IN Connected to GND through the pull-down resistor R100.
27
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied.
28-29 P71-P70 OUT Terminal not used.
30 XIN IN
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect
to XOUT terminal.
31 XOUT OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
32 VSS IN
Power source voltage: -5.0V.
VC voltage of power source circuit input.
33 P27 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of
G8 line keys on key matrix is touched.
34 P26 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of
G7 line keys on key matrix is touched.
35 P25 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of
G6 line keys on key matrix is touched.
36 P24 OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of
G5 line keys on key matrix is touched.
16.7 msec.
During cooking
H : GND
L : -5V
P-HI
H : GND
L : -5V
H : GND
L : -5V
P-70
ON
ON
OFF
OFF OFF
24 sec.
8 sec.
16.7 msec.
H : GND
L : -5V
Pin No. Signal I/O Description