21
R-320HK
R-320HQ
R-320HW
Pin No.
Signal
I/O
Description
9
AN1
IN
AH sensor input.
This input is an analog input terminal from the AH sensor circuit, and connected to the A/D
converter built into the LSI.
10
AN0
IN
Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an
analog input terminal from the AH sensor circuit, and connected to the A/D converter built into
the LSI.
11-13
P57-P55
OUT
Used for initial balancing of the bridge circuit (absolute humidity sensor).
14
CNTR0
OUT
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
15
P53
OUT
Used for initial balancing of the bridge circuit (absolute humidity sensor).
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
P51
OUT
Used for initial balancing of the bridge circuit (absolute humidity sensor).
18
P50
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.
19
P47
IN
Signal similar to AN3.
When either G13 line on key matrix is touched, a corresponding signal will be input into P46.
20
P46
OUT
Terminal not used.
21
P45
IN
Signal similar to AN3.
When either G12 line on key matrix is touched, a corresponding signal will be input into P45.
22-23
P44-P43
OUT
Terminal not used.
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 AN3.
When either G11 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.
27
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied.
28
P71
IN
Signal similar to AN3.
When either G10 line on key matrix is touched, a corresponding signal will be input into P71.
29
P70
IN
Signal similar to ANI3.
When either G9 line on key matrix is touched, a corresponding signal will be input into P70.
30
XIN
IN
Internal clock oscillation frequency control 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 output.
Output to control oscillation input to XIN.
32
VSS
IN
Power source voltage : -5.0V.
The power source voltage to the drive LSI is input to VSS terminal. Connected to VC.
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
Maximum
output
70% of maximum
output
H : GND
L : -5V
H : GND
L : -5V
ON
ON
OFF
OFF
OFF
24 sec.
8 sec.
16.7 msec.
H : GND
L : -5V
