Sharp Carousel II R-3A54 Manuale di servizio - Pagina 18

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R-3A54
R-3E54
LSI(IZA415DR)
The I/O signals of
DESCRIPTION
OF LSI
the LSI(IZA415DR)
are detailed
in the following
table.
PIN NO.
/ 1
1 SIGNAL
1 DIO
I
I/O
) OUT
Digit
selection
sianal.
Refer to the touch control
panel circuit
about the relation
between
signals and digits.
Normally,
one pulse is output
in every synchronized
signal
period, and input to the grid of the fluorescent
display.
PIN NO.
/ 2
1 SIGNAL
j D?l
I
I/O
1 OUT
Segment
data signals.
Refer to the touch control
panel circuit
for the relationship
between
signals and indicators.
Normally,
one pulse is output
in every synchronized
signal period, and input to the anode of the fluorescent
display.
PIN NO.
1 3
1 SIGNAL
1 TGI
I I/O
/ OUT
Signal
to sound
buzzer.
A:
Key touch sound
(0.12 sec.).
B: Completion
sound
(2.4 sec.).
PIN NO.
1 4
1 SIGNAL
1 Vdisp
I
I/O
1 IN
Anode
(segment)
of Fluorescent
Display
illumination
voltage:
-29V
Vp voltage of power source circuit
input.
PIN NO.
1 5
Segment
data signal.
Signal similar to Dl 1.
1 SIGNAL
1 ROo
I
I/O
1 OUT
Kev strobe
signal.
Signal
applied
to touch-key
section.
A pulse signal
is input to R23, R30 -
R32 terminal
while
one of Gl line keys on key matrix is touched.
PIN NO.
/ 6
Segment
data signal.
Signal similar to Dl 1.
1 SIGNAL
/ ROI
I
I/O
/ OUT
Kev strobe
signal.
Signal
applied
to touch-key
section.
A pulse signal
is input to R23, R30 -
R32 terminal
while
one of G2 line keys on key matrix is touched.
PIN NO.
1 7
Segment
data signal.
Signal similar to Dl 1.
1 SIGNAL
1 RO2
I
I/O
1 OUT
Kev strobe
sianal.
Signal
applied
to touch-key
section.
A pulse signal
is input to R23, R30 -
R32 terminal
while
one of G3 line keys on key matrix is touched.
PIN NO.
1 8
Segment
data signal.
Signal similar to Dl 1.
1 SIGNAL
(
RO3
I l/O
1 OUT
Key strobe
signal.
Signal
applied
to touch-key
section.
A pulse signal
is input to R23, R30 -
R32 terminal
while
one of G4 line keys on key matrix is touched.
PIN NO.
1 9
Segment
data signal.
Signal similar to Dl 1.
1 SIGNAL
1 RIO
I I/O
/ OUT
Key strobe
signal.
Signal
applied
to touch-key
section.
A pulse signal
is input to R23, R30 -
R32 terminal
while
one of G5 line keys on key matrix is touched.
PIN NO.
/ 10
Segment
data signal.
Signal similar to Dl 1.
1 SIGNAL
/ RI1
I I/O
/ OUT
Key strobe
signal.
Signal
applied
to touch-key
section.
A pulse signal
is input to R23, R30 -
R32 terminal
while
one of G6 line keys on key matrix is touched.
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