9 -4A54
R-4A54B
DESCRIPTION OF LSI
LSI( IZA430DR)
The I/O signais of the LSI(IZA430DR) are detailed in the following table.
PIN NO. I 1
1 SIGNAL 1 D10
I i/o
/ OUT
Diqit selection sinnal.
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 / Dll
I
I/O OUT
Seqment data siqnals.
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. / 3
Siqnal to sound buzzer.
1 SIGNAL / TGl
I
I/O
j OUT
A: Key touch sound (0.12 sec.).
B: Completion sound (2.4 sec.).
PIN NO.
: 4
1 SIGNAL j Vdisp
I
l/O
IN
Anode (seqment) of Fluorescent Display illumination voltaqe: -29V
Vp voltage of power source circuit input.
PIN NO. / 5
Seqment data siqnal.
Signal similar to Dl 1 .
1 SIGNAL i ROo
I
I/O
j OUT
Kev strobe siqnal.
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.
j 6
Seqment data sinnal.
Signal similar to Dll .
SIGNAL 1 R01
I
i/O
i OUT
Kev strobe siqnal.
Signal applied to touch-key section.
A pulse signal is input to R23, R3o -
R32 terminal while one of G2 line keys on key matrix is touched.
PIN NO.
/ 7
Seqment data siqnal.
Signal similar to Dll .
1 SIGNAL / ROz
I
l/O
OUT
Kev strobe siqnal.
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.
/ 8
Seqment data siqnal.
Signal similar to Dl 1 .
SIGNAL / RO3
I
I/O
/ OUT
Kev strobe siqnal.
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
Seqment data siqnal.
Signal similar to 011.
1 SIGNAL / Rlo
I
I/O
OUT
Kev strobe siqnal.
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 1 SIGNAL 1 RI1
I
l/O
j OUT
Seqment data siqnal.
Signal similar to Dl 1.
Kev strobe siqnal.
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.
9
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