Sharp R-430CK Service Manual page 25

Pin No. Signal
24 P25 OUT
25-26 P26-P27 OUT
27-29 P30-P32 OUT
30-34 P33-P37 OUT
35 CVCC
36 VSS
37-38 V3-V2
39-40 V1-V0
41 VCC
42-45 COM4-COM1 OUT
46-65 SEG1-SEG20 OUT
66-79 P74-P91 OUT
80-85 OUT
SEG35-SEG40
86 OUT
P40
87 P41
88 P42 INSignal similar to AN10.
89 IRQ0
90 AVCC
91 AN0
92 AN1
I/O
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds "L" level during microwave cooking
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.
Terminal not used.
Terminal not used.
Used for initial balancing of the bridge circuit (absolute humidity sensor).
IN Connected to GND.
IN Power source voltage: -5.0V.
The power source voltage to the LSI is input to VSS terminal. Connected to VC
IN Terminal not used.
Power source voltage input terminal.
Standard voltage for LCD. Connected to GND.
IN Power source voltage: GND (0V).
The power source voltage to drive the LSI is input to VCC terminal.
Terminal not used.
Terminal not used.
Data output terminal to LCD driver IC3
Terminal not used.
Terminal not used.
IN Signal similar to AN10.
When either G13 line on key matrix is touched, a corresponding signal will be input into P41.
When either G12 line on key matrix is touched, a corresponding signal will be input into P42.
IN Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
IN A/D converter power source voltage.
The power source voltage to drive the A/D convertor built into LSI. connected to GND.
IN Used for initial balancing of bridge circuit (absolute humidity sensor). This input is an
analoge input terminal from the AH sensor circuit, and connected to the A/D converter
built into the LSI.
IN AH sensor input.
This input is an analoge input terminal from the AH sensor circuit, and connected to the
A/D converter built into the LSI.
Description
(ON and OFF times for other power level.)
23
OFF
P-HI
ON
OFF OFF
24 sec.
P-70
8 sec.
ON
16.7 msec.
R-430CK
R-430CW
R-430CD
H : GND
L : -5V
H : GND
L : -5V
H : GND
L : -5V