R-7H55
23
Pin No. Signal I/O Description
44 D10 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R20-R23 terminal while one
of G-1 line keys on key matrix is touched.
45 D11 OUT Terminal not used.
46 D12 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R20-R23 terminal while one
of G-3 line keys on key matrix is touched.
47 D13 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R20-R23 terminal while one
of G-4 line keys on key matrix is touched.
48 R80 OUT Segment data signal.
Signal similar to D1.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R20-R23 terminal while one
of G-5 line keys on key matrix is touched.
49 R81 OUT Segment data signal.
Signal similar to D1.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R20-R23 terminal while one
of G-6 line keys on key matrix is touched.
50 R82 OUT Segment data signal.
Signal similar to D1.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R20-R23 terminal while one
of G-7 line keys on key matrix is touched.
51 R83 OUT Segment data signal.
Signal similar to D1.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R20-R23 terminal while one
of G-8 line keys on key matrix is touched.
52-55 R90-R93 OUT Segment data signal.
Signal similar to D1.
56-59 R10-R13 OUT Segment data signal.
Signal similar to D1.
60 R20 IN Signal coming from touch key.
When either one of G-9 line keys on key matrix is touched, a corresponding signal will
be input into R20. When no key is touched, the signal is held at "L" level.
61 R21 IN Signal coming from touch key.
When either one of G-10 line keys on key matrix is touched, a corresponding signal will
be input into R21. When no key is touched, the signal is held at "L" level.
62 R22 IN Signal coming from touch key.
When either one of G-11 line keys on key matrix is touched, a corresponding signal will
be input into R22. When no key is touched, the signal is held at "L" level.
63 R23 IN Signal coming from touch key.
When either one of G-12 line keys on key matrix is touched, a corresponding signal will
be input into R23. When no key is touched, the signal is held at "L" level.
64 Vdisp IN Anode (segment) of Fluorescent Display illumination voltage: -26V.
Vp voltage of power source circuit input.
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