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Pin. No.
Signal
Description
I/O
IN
47
K7
48
49
AVss
vss
50
NC
Signal synchronized
with commercial
source frequency
This' IS the basic timing for time processing of LSI (I-1 : iX2321YA).
~
~-----_
Approx.
20 msec.
I
1
IN
Connected
to GND.
IN
NC
Terminal
not used.
IN
1
Power source voltage:
-12V.
/
I
Voltage
of power source circuit
is input.
51
VDD
52
VP
IN
Anode
(segment)
of Fluorescent
Display
light-up voltage:
-32V.
Vp voltage of powel source circuit
is input.
53
IN
Connected
to GND.
INT
CNVss
54
/
IN
/
55
/
OUT
/
Segment
data signals.
Signal similar to Ul.
so
Sl
56
s2
s3
s4
57
58
59
60
s5
OUT
61
S6
OUT
62
s7
OUT
XOUT
OUT
Internal
clock oscillation
frequency
control
output.
63
64
Output
to control
oscillation
input of XIN.
XIN
IN
Internal
clock oscillation
frequency
setting input.
The internal
clock frequency
is set by inserting the ceramic filter
oscillation
circuit
with respect to XOUT
terminal.
45
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