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PIN NO.
1 39
Terminal
not used.
1 SIGNAL
1 PI7
I
I/O
1 OUT
PIN NO.
j 40
1 SIGNAL
1 PI6
Segment
data signals.
The relation
between
signals and indicators
are as follows:
I
I/O
j OUT
Signal
Segment
Sianal
Segment
PI6 .....................................
LB2
PO2 ..........................................
g
PI4
....................................
UB2
PO1 ...........................................
f
PI 3 .....................................
LB1
PO0 ..........................................
PI1
....................................
UBI
P26 ..........................................
PI0
..........................................
k
P25 ..........................................
PO7 ...........................................
PO5 ...........................................
i
P23 ..........................................
P22 ..........................................
-
PO4 ..........................................
h
PIN NO.
j 41
1 SIGNAL
j PI5
I l/O
/ OUT
Digit
selection
signal.
The relationship
between
digit signal and digit are as follows:
Digit signal
digit
P15
. . . . . . . . . . . . . . . . . . . . . . . . . . 1st
P12
. . . . . . . . . . . . . . . . . . . . . . . . . . 2nd
PO6 . . . . . . . . . . . . . . .._..... . . . .3rd
PO3 . . . . . . . . . . . . . . . . . . . . . . . ...4th
P27
. . . . . . . . . . . . . . . . . . . . . . . . . . 5th
P24
. . . . . . . . . . . . . . . . . . . . . . . . . . 6th
Normally,
one pulse is output
in every
13 period,
and input to the grid of the
Fluorescent
Display.
--- ---_--_______
GND
PO6
n
PO3
n
P27
n
P24
---ki-L
PIN NO.
1 42
1 SIGNAL
1 PI4
1
I/O
1 OUT
Segment
data signal.
Signal similar to P16.
Kev strobe
signal.
Signal applied to touch-key
section.
A pulse signal is input to RO-R3 terminal
while
one of G-5 line keys on key matrix is touched.
(RD939A3U)
PIN NO.
1 43
1 SIGNAL
1 PI3
I
I/O
1 OUT
Segment
data siqnal.
Key strobe
signal.
Signal similar to PI 6.
Signal applied to touch-key
section.
A pulse signal is input to RO-R3 terminal
while
one of G-6 line keys on key matrix is touched.
(RD939A3U)
PIN NO.
1 44
1 SIGNAL
/ PI2
I I/O
/ OUT
Digit
selection
signal.
Signal similar to PI 5.
(RD938A2U)
PIN NO.
/ 45
1 SIGNAL
1 PI1
I I/O
j OUT
Segment
data signal.
Signal similar to P16.
(RD939A2U)
PIN NO.
1 46
Seqment
data signal.
Signal similar to P16.
1 SIGNAL
1 PI0
I
I/O
1 OUT
Key strobe
signal.
Signal applied to touch-key
section.
A pulse signal is input to RO-R3 terminal
while
one of G-7 line keys on key matrix is touched.
(RD939A3U)
PIN NO.
j 47
1 SIGNAL
1 PO7
Segment
data signal.
Signal similar to P16.
I
I/O
/ OUT
(RD939A2U)
17
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