Sharp R-1211 Service Manual page 18

Over the counter microwave oven
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R-1210
R-1211
Pin No.
Signal
I/O
25
P41
OUT
26
P40
IN
27
IN
RESET
28-29
P71-P70
OUT
30
XIN
IN
31
XOUT
OUT
32
VSS
IN
33
P27
OUT
34
P26
OUT
35
P25
OUT
36
P24
OUT
37
P23
OUT
38
P22
OUT
39
P21
OUT
40
P20
OUT
41
P17
OUT
42
P16
OUT
43
P15
OUT
44
P14
OUT
45-47
P13-P11
OUT
Terminal not used.
Connected to GND through the pull-down resistor R100.
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied.
Terminal not used.
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to XOUT terminal.
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
Power source voltage: -5.0V.
VC voltage of power source circuit input.
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.
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.
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.
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.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one
of G4 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one
of G3 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one
of G2 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P43-P46 terminal while one
of G1 line keys on key matrix is touched.
Hood lamp driving signal.
To turn on and off relay(RY6). "L" level: During
Hood lamp ON. "H" level: During Hood lamp OFF.
Hood lamp driving signal.
To turn on and off relay(RY5). "L" level: During
Hood lamp ON. "H" level: During Hood lamp OFF.
Hood motor high / low driving signal.
To turn on and off relay(RY3). "L" level: During Hood
motor high. "H" level: During Hood motor low.
Hood motor driving signal.
To turn on and off relay(RY4). "L" level: During
Hood motor ON. "H" level: During Hood motor OFF.
Terminal not used.
16
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