Touch Panel Interface Circuit - Panasonic JS-170FR Series Service Manual

2.1.13

Touch panel interface circuit

This system uses a touch panel of the resistance film type.
Control of the touch panel is effected by COM4 of the serial port.
Where the touch panel is pressed, the signal is analyzed by the one-chip CPU, N0100559V105, and sent to COM4.
The transfer Baud rate is 9600bps.
The operation mode is modified through switch setting.
For SW - ON (P06 terminal = Low)
For SW - OFF (P06 terminal = High) →
S W
4 3
P0 6
4 2
P0 7
5 8
P3 1 / UO1
RX D4
5 6
T X D4 P3 2 / UI1
5 5
DCD4
P3 3 / SCK1 X
5 4
DT R4
P3 4 / SO1
5 3
P3 5 / SI 1
DS R4
5 2
RT S 4 P3 6 / PW C
5 1
CT S 4 P3 7 / W T 0
MB89635
( N0 1 0 - 0 5 5 9 - V 1 0 5 )
→
Operation conforming to the Panasonic Specification (DOS)
Operation conforming to Windows
+ 5 V
+ 5 V
DT A1 2 3 Y
4 9
P0 0
DT A1 2 3 Y
4 8
P0 1
4 7
P0 2
4 6
P0 3
4 5
P0 4
2 2 K
1 0 K
4 4
P0 5
4
AN0
0 . 0 1 u
5 6 0 p
1 0 K
5
AN1
6
AN2
7
AN3
8
AN4
1 8 0 0 p
1 8 0 0 p 1 8 0 0 p
1 8 0 0 p
DT C1 2 3 Y
+ 5 V
DT A1 2 3 Y
1 K
1 0 K
1 0 K
1 0 K
2-41
DT C1 2 3 Y
+ 5 V
F L
F L
F L
F L
F L
F L
F L
CN_TP
1
U
2
R
3
A
4
L
5
B
6
D
7
C