EasyPIC4 User
’
s Manual
2
22
2
page
M I K R O E L E K T R O N I K A S O F T W A R E A N D H A R D W A R E S O L U T I O N S F O R T H E E M B E D D E D W O R L D
MikroElektronika
Development
tools
EasyPIC
ICD
4
In order to enable GLCD,
jumper JP12 should be set
to the right-hand position,
labeled as GRAPH.
GRAPHIC LCD
A graphic LCD (GLCD) allows advanced visual messages to be displayed. While a
character LCD can display only alphanumeric characters, a GLCD can be used to
display messages in the form of drawings and bitmaps. The most commonly used
graphic LCD has the screen resolution of 128x64 pixels. Before a GLCD is con-
nected, the user needs to set the jumper JP12 (Fig. 28) to the right-hand position.
The GLCD’s contrast can be adjusted using the potentiometer P3, which is placed
to the right of the GLCD.
P3 10K
Vee
Vo
Contrast
Adjustment
JP12
GRAPH.
CHAR.
D0
D1
D2
D3
D4
D5
D6
D7
CS1
CS2
RS
R/W
E
RST
VCC
VCC
VCC
D5
D4
D3
D2
D1
D0
E
R/W
RS
LED-
Vo
LED+
VCC
Ve
e
GND
RST
CS2
D7
CS1
D6
1
20
PICxxxx
RA0
RA1
RA2
RA3
RC0
RC1
RA4
RA5
RE0
RE1
RE2
RC3
RD0
RD1
RC4
RD3
RD2
RC5
RC6
RC7
RD4
RD5
RD6
RD7
RB0
RB1
RB2
RB3
RB4
RB5
RB7
RB6
RC2
VDD
VSS
OSC1
OSC2
MCLR
VDD
VSS
LCD8 contrast
selected
GLCD and LCD8
contrast not selected
GLCD contrast
selected
X1
8MHz
C6
22pF
C7
22pF
R28 2E2
VCC
Figure 30.
GLCD schematics
Figure 28.
Figure 29.
GLCD
selection
jumper
GLCD
GG
RR
AA
PP
HH
IICC
LL
CC
DD
11
22
88
XX
66
44
GRAPHIC LCD
CONNECTOR
ON-BOARD
GRAPHIC LCD
CONNECTOR
ON-BOARD
