MIKROE-1385 mikroElektronika, MIKROE-1385 Datasheet - Page 21

• 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

GLCD 128x64
Graphical Liquid Crystal Displays, or GLCDs are used to display
monochromatic graphical content, such as text, images, human-
machine interfaces and other content. EasyAVR
the connector and necessary interface for supporting GLCD with
resolution of 128x64 pixels, driven by the KS108 or compatible
display controller. Communication with the display module is
done through CN16 display connector. Board is fitted with
uniquely designed plastic display distancer, which allows the
GLCD module to perfectly and firmly fit into place.
EasyAVR
VCC-5V
1
Figure 11-1: GLCD 128x64
connection schematic
P4
10K
v7
20
GLCD-TFT SOCKET2
R34
20
™
v7 provides
Q5
BC846
CN16
R37
4K7
VCC-BRD
Display connector is routed to PB0, PB1, PA2,
PA3, PD6, PD7 (control lines) and PORTC (data
lines) of the microcontroller sockets. Since the
same ports are used by 2x16 character LCD display,
you cannot use both displays simultaneously. You
can control the display contrast using dedicated
potentiometer P4. Full brightness display back light
can be enabled with SW3.1 switch, and PWM-driven
back light with SW3.2 switch.
R36
1K
Connector pinout explained
CS1
VCC
GND
Vo
RS
R/W
Write mode.
- GLCD contrast level from potentiometer P4
- Data (High), Instruction (Low) selection line
Standard and PWM-driven back-light
As for LCD, we have allowed GLCD back-light to be enabled in two
different ways:
1. It can be turned on with full brightness using SW3.1 switch.
2. Brightness level can be determined with PWM signal from the
BCK LIGHT
BCK PWM
IMPORTANT:
and
- +5V display power supply
- Reference ground
- Determines whether display is in Read or
microcontroller, allowing you to write custom back-light controlling
software. This back-light mode is enabled with SW3.2 switch.
CS2
SW3
- Controller Chip Select lines
VCC-5V
In order to use PWM back-light both SW3.1 and SW3.2 switches must
be enabled at the same time.
PD5
DATA BUS
E
D0–D7
RST
Vee
potentiometer P3
LED+
LED-
- Display Enable line
- Display reset line
- Connection with the back-light LED cathode
- Reference voltage for GLCD contrast
- Connection with the back-light LED anode
- Data lines
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