19
R -508DK
R -510DK
R-510DW
11
P57
OUT
Back light circuit (Light emitting diodes) driving signal.
12-13
P56-P55
OUT
Terminal not used.
14
CNTR0
OUT
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
15
P53
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.
16
P52
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.)
17-18
P51-P50
OUT
Terminal not used.
19-20
P47-P46
OUT
Terminal not used.
21
P45
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 P45. When no key is touched, the signal is held at "H" level.
22
P44
IN
Signal similar to P45.
When either G11 line on key matrix is touched, a corresponding signal will be input into
P44.
23
P43
IN
Signal similar to P45.
When either G10 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
IN
Signal similar to P45.
When either G9 line on key matrix is touched, a corresponding signal will be input into P41.
26
P40
IN
Connected to GND through the pull-down resistor R90.
27
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied. Temporarily set "L"
level the moment power is applied, at this time the LSI is reset. Thereafter set at "H" level.
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 XIN terminal.
31
XOUT
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XOUT.
32
VSS
IN
Power source voltage: -5.0V.
VC voltage of power source circuit input.
Pin No.
Signal
I/O
Description
A
B
0.1 sec.
2.0 sec.
H : GND
L : -5V
H : GND
L : -5V
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
