Sharp R-420CK User Manual

22
R-420CK
R-420CW
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 CNTR0 OUT Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
20-22 P21-P22 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

Sharp R-420CK Specifications

General

Brand	Sharp
Model	R-420CK
Category	Microwave Oven
Language	English