MIKROE-648 mikroElektronika, MIKROE-648 Datasheet - Page 18

• Manufacturer Part Number: MIKROE-648
• Description: Development Boards & Kits - ARM EASYARM V6 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-648

• Rohs: yes
• Product: Development Kits
• Tool Is For Evaluation Of: LPC2148, LPC2214
• Core: ARM7TDMI-S
• Interface Type: RS-232, SPI, UART, USB
• Operating Supply Voltage: 5 V, 9 V to 32 V
• Data Bus Width: 32 bit
• Description/function: Development Board Only, Touch Screen, Pencil, DS1820, LCD, Serial Cable, GLCD not included
• Dimensions: 265 mm x 220 mm
• Processor Series: LPC2xxx
• For Use With: LPC2148, LPC2214

MikroElektronika
13.0. Touch panel
A touch panel is a thin, self-adhesive, transparent, touch-sensitive panel. It is placed over a GLCD display. Its main function
is to register pressure at some specific display point and to forward its coordinates in the form of analog voltage to the
microcontroller. Switches 5, 6, 7 and 8 on the DIP switch SW3 are used to connect the microcontroller and touch panel.
Figure 13-1: Placing touch panel over a GLCD
Figure 1 shows how to place a touch panel over a GLCD display. Make sure that the flat cable is to the left of the GLCD,
as shown in Figure 1D.
Figure 13-2: Touch panel connection schematic
Figure 13-3: Connecting touch panel
Figure 3 shows in detail how to connect a touch panel to the microcontroller. Bring the end of the flat cable close to
the CN38 connector (Figure A). Plug the cable into the connector (Figure B) and press it easily so as to fully fit the
connector (Figure C). Now, a GLCD can be plugged into the appropriate connector (Figure D).
NOTE:
A
A
CN38
RIGHT
TOP
LEFT
BOTTOM
LEDs and pull-up/pull-down resistors on port PORT0 should be off when the touch panel is in use.
1
20
B
GLCD
B
RIGHT
TOP
LEFT
BOTTOM
VCC
Q4
BC856
Q
BC856
5
R
100
R
100
VCC
16
17
K
K
R
1 K
R
1 K
0
13
10
0
Q2
BC846
Q
BC846
6
TOUCHPANEL
CONTROLLER
Q
BC846
R
1K
R
1 K
R
1 K
3
12
0
0
9
15
R
1 K
VCC
11
0
R
1K
R
1K
VCC
8
14
BO TOM
DRIVEA
DRIVEB
C
T
LEFT
C
SW3
P0.29
P0.12
P0.13
P0.30
P0.21
P0.22
RTXC1
P1.19
RTXC2
GND
VCCA
P1.18
P0.25
D+
D-
P1.17
P0.28
P0.29
P0.30
P1.16
LPC2148
D
D
VCC3
P0.17
P0.16
P0.15
P1.21
P0.14
P1.22
P0.13
P0.12
P0.11
P1.23
P0.10
P1.20
GND
P0.9
P0.8
EasyARM v6
VCC3