22
R- 320DK
R-3 20DQ
R-320DW
1-2
P26-P27
OUT
Terminal not used.
3-5
P70-P72
OUT
Terminal not used.
6
IC
IN
Connected to VC.
7
X2
OUT
Internal clock oscillation output.
Output to control oscillation input to X2.
8
X1
IN
Internal clock oscillation frequency control input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to X1.
9
VDD1
IN
Power source voltage: GND(0V).
The power source voltage to drive LSI is input to VDD1 terminal.
10
XT1
IN
Connected to GND.
11
XT2
OUT
Terminal not used.
12
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.
13
INTP0
IN
Connected to VC.
14
INTP1
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
15
P02
OUT
Terminal not used.
16
P03
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.
(ON and OFF times for other power level.)
17
P04
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.
18
P05
OUT
Terminal not used.
19
P110
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to ANI7, P100, P101, P102
and P103 terminal while one of G8 line keys on key matrix is touched.
20
P111
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to ANI7, P100, P101, P102
and P103 terminal while one of G7 line keys on key matrix is touched.
21
P112
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to ANI7, P100, P101, P102
and P103 terminal while one of G6 line keys on key matrix is touched.
22
P113
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to ANI7, P100, P101, P102
and P103 terminal while one of G5 line keys on key matrix is touched.
LSI(IXA020DR)
The I/O signal of the LSI(IXA020DR) is detailed in the following table.
Pin No.
Signal
I/O
Description
16.7 msec.
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.
During cooking
H : GND
L : -5V
