Sharp R-1500, R-1505 Pin No, Signal, Description, Auto clear terminal, OUT Key strobe signal

R-1500

R-1501

R-1505

R-1506

Pin No.	Signal	I/O	Description
15	P53	OUT	Terminal not used.
16	P52	OUT Oven lamp, fan motor and turntable motor driving signal
			To turn on and off shut off relay (RY1). The	16.7 msec.		H : GND
			square waveform voltage is delivered to the RY1
			driving circuit and RY2 control circuit.
						L : -5V
					During cooking

17-18	P51-P50	OUT	Terminal not used.
19	P47	OUT	Magnetron high-voltage circuit driving signal.
			To turn on and off the cook relay (RY2). The		OFF		H : GND
			signals holds "L" level during microwave cook-		P-HI
			ing and "H" level while not cooking. In other			ON	L : -5V
			cooking modes (variable cooking) the signal
					OFF		OFF
			turns to	"H" level and "L" level in repetition		24 sec.	H : GND
					P-70
			according to the power level.				8 sec.
						ON
							L : -5V

(ON and OFF times for other power level.)

20 P46 IN Signal coming from touch key.

When either G12 line on key matrix is touched, a corresponding signal out of P20 - P27 will be input into P46. When no key is touched, the signal is held at "H" level.

21 P45 IN Signal similar to P46.

When either G11 line on key matrix is touched, a corresponding signal will be input into P45.

22 P44 IN Signal similar to P46.

When either G10 line on key matrix is touched, a corresponding signal will be input into P44.

23 P43 IN Signal similar to P46.

When either G9 line on key matrix is touched, a corresponding signal will be input into P43.

24		INT0	IN	Signal synchronized with commercial power source frequency.
				This is the basic timing for time processing of LSI.		H : GND
						L : -5V
					16.7 msec.
25		P41	OUT	Terminal not used.
26		P40	IN	Connected to GND through the pull-down resistor R100.
27			IN	Auto clear terminal.
		RESET
				Signal is input to reset the LSI to the initial state when power is applied.
28-29	P71-P70		OUT	Terminal not used.
30		XIN	IN	Internal clock oscillation frequency 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 frequency control output.

Output to control oscillation input of XIN.

32 VSS IN Power source voltage: -5.0V.

VC voltage of power source circuit input.

33 P27 OUT Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of

G8 line keys on key matrix is touched.

34 P26 OUT Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of

G7 line keys on key matrix is touched.

35 P25 OUT Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of

G6 line keys on key matrix is touched.

36 P24 OUT Key strobe signal.

Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one of

G5 line keys on key matrix is touched.

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