Sharp R-480J Service Manual page 20

R-480J
Pin No. Signal I/O
37 P05 OUT
38 P04 OUT
39 P03 OUT
40 P02 OUT
41 P01 OUT
42 P00 OUT
43 P17 IN
44 P16 IN
45 P15 IN
46 P14 IN
47 AIN7 IN
48 AIN6 IN
49 AIN5 IN
50 AIN4 IN
51 RESET IN
_
52 NC
53 XCOUT OUT
54 XCIN IN
_
55 NC
56 VCC IN
57 OSCSEL IN
58 XOUT OUT
59 VSS IN
_
60 NC
61 XIN IN
_
62 NC
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to AIN7, P14, P15, P16 and P17
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 AIN7, P14, P15, P16, P17 and
AIN6 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 AIN7, P14, P15, P16 and P17
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 AIN7, P14, P15, P16 and P17
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 AIN7, P14, P15, P16 and P17
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 AIN7, P14, P15, P16 and P17
terminal while one of G8 line keys on key matrix is touched.
Signal coming from touch key.
When either G9 line on key matrix is touched, a corresponding signal out of P00-P07 will be
input into P17. When no key is touched, the signal is held at "H" level.
Signal similar to P17.
When either G10 line on key matrix is touched, a corresponding signal will be input into P16.
Signal similar to P17.
When either G11 line on key matrix is touched, a corresponding signal will be input into P15.
Signal similar to P17.
When either G12 line on key matrix is touched, a corresponding signal will be input into P14.
Signal similar to P17.
When either G13 line on key matrix is touched, a corresponding signal will be input into AIN7.
Input terminal to judge the model.
The signal out of P04 will be input into AIN6 through G4 line on key matrix. The LSI will judge
the model by this signal.
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.
Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an
analog input terminal from the AH sensor circuit, and connected to the A/D converter built
into the LSI.
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
Terminal not used.
Terminal not used.
Connected to VC.
Terminal not used.
Power source voltage: GND(0V).
The power source voltage to drive LSI is input to VCC terminal.
Connected to VC(-5V).
Internal clock oscillation output.
Output to control oscillation input of XIN.
Power source voltage: -5.0V.
The power source voltage to the LSI is input to VSS terminal. Connected to VC.
Terminal not used.
Internal clock oscillation frequency control input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect
to XOUT terminal.
Terminal not used.
Description
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