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R -9200
PIN NO.
j 24
1 SIGNAL
/ P31
I
I/O
%qnal
to svnchronize
LSI with
commercial
power
source
frequency.
This is basic timing for all real time processing
of LSI.
ti
rnGND
1
20 msac
PIN NO.
j 25
1 SIGNAL
/ P30
I-
I
I/O
1 OUT
Damper
motor
relay drivinq
siqnal.
To turn on and off the shut-off
relay( RY4).
OFF
H
GND
ON
, ---e--L
PIN NO.
/ 26
Connected
to VC.
1 SIGNAL
) CNVSS
I I/O
1 IN
(RD93KA3U)
PIN NO.
1 27
1 SIGNAL
1 RESET
I
I/O
) IN
Auto
clear terminal.
Signal is input to reset the LSI to the initial
state when power is applied.
Temporarily
set to "L" level the moment
power is applied,
at this time the LSI is reset.
Thereafter
set at "H" level.
(RD93MA2U)
PIN NO.
/ 28
1 SIGNAL
1 XIN
I
I/O
j IN
Internal
clock
oscillation
frequencv
settinq
input.
The internal
clock frequency
is set by inserting
the ceramic filter oscillation
circuit
with respect to XOUT terminal.
PIN NO.
/ 29
1 SIGNAL
/ XOUT
I I/O
1 OUT
Internal
clock oscillation
frequency
control
output.
Output
to control
oscillation
input of XIN.
PIN NO.
1 30
1 SIGNAL
( XCIN
I
I/O
1 IN
Weight
sensor data input.
PIN NO.
31
I
1 SIGNAL
1 XCOUT
I I/O
/ OUT
Terminal
not used.
PIN NO.
, 1 32
1 SIGNAL
1 VSS
I I/O
j IN
Power
source
voltaqe:
-5V
VC voltage
of power source circuit
input.
PIN NO.
1 33
1 SIGNAL
( 0
I
l/O
/ OUT
Terminal
not used.
PIN NO.
/ 34
1 SIGNAL
/ R3
I I/O
IN
Siqnal
cominq
from
touch
kev.
When
any
one
of
G-l
line
keys
on
key
matrix
is
touched,
a
corresponding
signal
from
POO,PO5,P1O,P13,P14,P22,P23
or P25 will be input into R3. When no key is touched,
the signal is held at "L" level.
PIN NO.
35
SIGNAL
/ R2
I I/O
IN
Sisnal
similar
to R3.
When any one of G-2 line keys on key matrix is touched,
a corresponding
signal will be input into R2.
(RD93CA8U)
PIN NO.
36
1 SIGNAL
/ RI
I I/O
/ IN
Siqnal
similar
to R3.
When any one of G-3 line keys on key matrix is touched,
a corresponding
signal will be input into RI.
(RD93CA8U)
PIN NO.
/ 37
1 SIGNAL
j RO
I
I/O
/ IN
Siqnal
similar
to R3.
When any one of G-4 line keys on key matrix is touched,
a corresponding
signal will be input into RO.
(RD93CA8U)
PIN NO.
/ 38
1 SIGNAL
j VP
I I/O
IN
Anode
(seament)
of Fluorescent
Displav
liqht-up
voltaqe:
-3lV.
Vp voltage of power source circuit
input.
16
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