Sharp R-330BK Service Manual page 25

Pin No. Signal I/O
79 VCC IN
80-84 P10-P14 OUT
85-86 P15-P16 OUT
87 P17 OUT
88-89 P40-P41 OUT
90 P42 OUT
91 IRQ0 IN
92 AVCC IN
93 AN0 IN
94 AN1 IN
95 AN2 IN
96 AN3 OUT
97-100 AN4-AN7 IN
Power source voltage: GND (0V).
The power source voltage to drive the LSI is input to VCC terminal.
Used for initial balancing of the bridge circuit (absolute humidity sensor).
Terminal not used.
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.
Terminal not used.
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.
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
A/D converter power source voltage.
The power source voltage to drive the A/D converter in the LSI. Connected to GND.
Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an
analog input terminal from AH sensor circuit, and connected to the A/D converter built into the
LSI.
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.,
To input signal which communicates the door open/close information to LSI.
Door close "H" level signal (0V). Door open "L" level signal (-5V)
Terminal not used.
Terminal to change cooking input according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the Model in
operation is applied to set up its cooking constant.
23
Description
16.7 msec.
During cooking
OFF
P-HI
ON
OFF
P-70
ON
(ON and OFF times for other power level.)
R-330BK
R-330BW
H : GND
L : -5V
H : GND
L : -5V
OFF
H : GND
24 sec.
8 sec.
L : -5V
H : GND
L : -5V
16.7 msec.