MIKROE-1385 mikroElektronika, MIKROE-1385 Datasheet - Page 22

• Manufacturer Part Number: MIKROE-1385
• Description: Development Boards & Kits - AVR EASY AVR V7 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-1385

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: ATMEGA32 Devices
• Core: AVR
• Interface Type: mikroBUS socket, RS-232, USB
• Operating Supply Voltage: 3.3 V, 5 V
• Data Bus Width: 8 bit
• Dimensions: 266 mm x 220 mm
• For Use With: MIKROE-240, MIKROE-55

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Figure 12-4: Touch Panel
controller and connection
schematic
CN20
DATA BUS
1
PA0
PA1
PA2
PA3
SW8
Figure 12-1: Put Touch panel flat cable in
the connector
20
GLCD-TFT SOCKET2
BOTTOM
DRIVEA
DRIVEB
LEFT
Correctly placing the touch panel cable into the connector
is how touch panels can be used as an input devices.
CN16
measure that pressure and pinpoint its location. This
onto the inner layer and appropriate controllers can
the screen is pressed, the outer layer is pushed
covered with two layers of resistive material. When
RIGHT
TOP
Touch panel is a glass panel whose surface is
LEFT
BOTTOM
Touch panel controller
VCC-BRD
R46
100K
R55
100K
Q6
BC856
Q9
BC856
VCC-BRD
C24
100nF
C33
100nF
R40
10K
Q10
BC846
Q11
BC846
R44
10K
R38
1K
Q13
BC846
R41
10K
R47
10K
R53
10K
VCC-BRD
VCC-BRD
VCC-BRD
R52
1K
R43
1K
BOTTOM
E7
10uF
DRIVEA
DRIVEB
LEFT
1
Figure 12-2: Use a tip of your finger
to push it inside
Enabling Touch panel
Touch panel is enabled using SW8.5,
SW8.6, SW8.7 and SW8.8 switches.
They connect READ-X and READ-Y lines
of the touch panel with PA0 and PA1
analog inputs, and DRIVEA and DRIVEB
with PA2 and PA3 digital outputs on
microcontroller sockets. Make sure to
disconnect other peripherals, LEDs and
additional pull-up or pull-down resistors
from the interface lines in order not to
interfere with signal/data integrity.
EasyAVR
and connector for 4-wire resistive touch panels. It
can very accurately register pressure at a specific point,
representing the touch coordinates in the form of analog
voltages, which can then be easily converted to X and Y
values. Touch panel comes as a part of display.
™
v7 is equipped with touch panel controller
2
Figure 12-3: Now place GLCD with
Touch panel into GLCD socket
Figure 12-5: Turn on switches
5 through 8 on SW8 to enable
Touch panel controller
EasyAVR
3
v7