23
R -340DK
R-340DW
25
P44
OUT
Key strobe signal.
Signal applied to touch screen section. A pulse signal is input to PB1-PB5 terminal while
one of G10 line keys on key matrix is touched.
26
P45
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.
27
P46
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds "H" level during microwave
cooking and "L" level while not cooking. In
other cooking modes (variable cooking) the
signal turns to "L" level and "H" level in
repetition according to the power level.
(ON and OFF times for other power level.)
28
P47
OUT
Terminal not used.
29-36
D8-D15
OUT
Data signal is output to IC2 and IC5.
37
Vcc
IN
Power source voltage : +5V.
The power source voltage to drive LSI is input to Vcc terminal. Connected to VCC.
38-45
A0-A7
OUT
Address signal is output to IC2 and IC5.
46
Vss
IN
Power source voltage : GND (0V).
The power source voltage to drive LSI is input to Vss terminal.
47-58
A8-A19
OUT
Address signal is output to IC2 and IC5.
59
Vss
IN
Power source voltage : GND (0V).
The power source voltage to drive LSI is input to Vss terminal.
60
WATT
IN
Connected to VCC.
61
P61
OUT
Envelope signal to sound buzzer.
A: key touch sound (short beep). B: Completion sound (melody or long beep).
62
P62
OUT
Reset signal is output to IC5.
63
P67
OUT
Terminal not used.
64
STBY
IN
Connected to VCC.
65
RES
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.
66
NMI
IN
Connected to GND.
67
Vss
IN
Power source voltage : GND (0V).
The power source voltage to drive LSI is input to Vss terminal.
68
EXTAL
OUT
Internal clock oscillation output.
Output to control oscillation input to EXTAL.
69
XTAL
IN
Internal clock oscillation frequency control input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to XTAL.
70
Vcc
IN
Power source voltage : +5V.
The power source voltage to drive LSI is input to Vcc terminal. Connected to VCC.
71
AS
OUT
Terminal not used.
72
RD
OUT
Read strobe signal is output to RD terminal of IC5.
73
HWR
OUT
Write strobe signal is output to WR terminal of IC5.
Pin No.
Signal
I/O
Description
16.7 msec.
During cooking
H : +5V
L : GND
100
PERCENT
70
PERCENT
H : +5V
L : GND
H : +5V
L : GND
ON
ON
OFF
OFF
24 sec.
8 sec.
