MIKROE-798 mikroElektronika, MIKROE-798 Datasheet - Page 25

• Manufacturer Part Number: MIKROE-798
• Description: Development Boards & Kits - PIC / DSPIC EASYPIC v7 DEVELOPMENT SYSTEM
• Manufacturer: mikroElektronika

Specifications of MIKROE-798

• Rohs: yes
• Product: Development Boards
• Tool Is For Evaluation Of: PIC18F45K22
• Core: PIC
• Interface Type: RS-232, USB
• Operating Supply Voltage: 5 V
• Description/function: Development board only, touch screen, pencil, DS1820, LCD, serial cable, GLCD not included
• Dimensions: 266 mm x 220 mm

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. EasyPIC
provides 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 CN6 display connector. Board is fitted
with uniquely designed plastic display distancer, which allows
the GLCD module to perfectly and firmly fit into place.
VCC-5V
1
Figure 12-1: GLCD 128x64
connection schematic
P3
10K
20
R92
20
GLCD SOCKET2
Q11
BC846
CN6
™
v7
R89
4K7
VCC-MCU
Display
(control lines) and PORTD (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
P3. Full brightness display back light can be enabled
with SW4.5 switch, and PWM-driven back light with
SW4.6 switch.
R10
1K
LCD-GLCD BPWM
LCD-GLCD BCK
Connector pinout explained
CS1
VCC
GND
Vo
RS
R/W
Write mode.
connector
- GLCD contrast level from potentiometer P3
- 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 SW4.6 switch.
2. Brightness level can be determined with PWM signal from the
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 SW4.5 switch.
CS2
SW4
- Controller Chip Select lines
is
routed
VCC-5V
In order to use PWM back-light both SW4.5 and SW4.6 switches must
be enabled at the same time.
RC2
to
PORTB
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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