17
R-2S56
Pin No.
Signal
I/O
Description
7 -10
R4
0 -
R4
3
OUT
Digit selection signal.
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 light
-emitting diode.
11-13
R5
0 -
R5
2
OUT
Segment data signal.
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 light -emitting diode.
14
VSS
IN
Connected to VC.
15
R5
3
OUT
Segment data signal.
Signal similar to R5
0
.
16
R6
0
OUT
Segment data signal.
Signal similar to R5
0.
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R8
1
-R8
3
terminal while
one of dioide D91 line switches on switch matrix is touched.
17
R6
1
OUT
Segment data signal.
Signal similar to R5
0.
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R8
1
-R8
3
terminal while
one of dioide D92 line switches on switch matrix is touched.
18
R6
2
OUT
Segment data signal.
Signal similar to R5
0.
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R8
1
-R8
3
terminal while
one of dioide D93 line switches on switch matrix is touched.
19
R6
3
OUT
Segment data signal.
Signal similar to R5
0
.
20
INT2
IN
Signal synchronized with commercial source frequency(50Hz).
This is basic timing for time processing of LSI.
21
R8
1
IN
Signal coming from touch tact switch.
When either one of resistor R9
3
line switches on switch matrix is touched, a
corresponding signal will be input into R8
1.
22
R8
2
IN
Signal coming from touch tact switch.
When either one of resistor R9
2
line switches on switch matrix is touched, a
corresponding signal will be input into R8
2.
23
R8
3
IN
Signal coming from touch tact switch.
When either one of resistor R9
1
line switches on switch matrix is touched, a
corresponding signal will be input into R8
3.
24
R9
0
OUT
Terminal not used.
25
SO
OUT
Signal to sound buzzer.
A: key touch sound(0.12 sec.).
B: Completion sound(2.4 sec.).
26
SCK
OUT
Connected to GND. (Pull up through resistor R2)
27
KEO
IN
Input signal which communicates the door open/close information to LSI.
Door closed; “H” level signal.
Door opened; “L” level signal.
28
VDD
IN
Connected to GND.
