22
R - 4 3 0 C S
7
P13
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to AN9, AN10, AN11, P41and
P42 terminal while one of G5 line keys on key matrix is touched
8
P14
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to AN9, AN10, AN11, P41and
P42 terminal while one of G4 line keys on key matrix is touched.
9
P15
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to AN9, AN10, AN11, P41and
P42 terminal while one of G3 line keys on key matrix is touched.
10
P16
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to AN9, AN10, AN11, P41and
P42 terminal while one of G2 line keys on key matrix is touched.
11
P17
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to AN9, AN10, AN11, P41and
P42 terminal while one of G1 line keys on key matrix is touched.
12
X1
IN
Connected to GND
13
X2
OUT
Terminal not used.
14
VSS
IN
Power source voltage: -5.0V.
VC voltage of power source circuit input.
15
OSC2
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of OSC2.
16
OSC1
IN
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to OSC1 terminal.
17
TEST
IN
Connected to VC.
18
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.
19
P20
OUT
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
20-22
P21-P23
OUT
Terminal not used.
23
P24
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.
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
