mikroElektronika EasyAVR4, Руководство пользователя

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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 EasyAVR
USB
4
EasyAVR4 User ’ s Manual MikroElektronika
Development
tools
2 20 0
page
GG
RR
AA
PP
HH
IICC
LL
CC
DD
11
22
88
XX
66
44
In order to enable GLCD,
jumper J8 should be set to
the upper position, labeled
as GRAPH.
GRAPHIC LCD
A graphic LCD (GLCD) allows advanced visual messages to be displayed. While a charac-
ter LCD can display only alphanumeric characters, a GLCD can be used to display mes-
sages in the form of drawings and bitmaps. The most commonly used graphic LCD has the
screen resolution of 128x64 pixels. Before a GLCD is connected, the user needs to set the
jumper J8 (Fig. 24) to the upper position. The GLCD’s contrast can be adjusted using the
potentiometer P1, which is placed to the right of the GLCD.
A
TMEGAxxxx
PB1
PB2
PB3
PB4
PD1
PD2
PB5
PB6
PB7
PD4
PD5
PD6
PC1
PC0
PD7
PC2
PC3
PC4
PC5
PC6
PC7
PA7
PA6
PA5
PA4
PA3
PA2
PA0
PA1
PD3
PB0
PD0
RST
VCC
GND
XT2
XT1
AREF
AGND
AVCC
VCC
OSCILLATOR
10K
Reset
100n
VCC
P1 10K
Vee
Vo Contrast
Adjustment
J8
GRAPH.
CHAR.
R/W
E
D7
D6
D5
D4
D3
D2
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
LCD8 contrast
selected
GLCD and LCD8
contrast not selected
GLCD contrast
selected
R19 10
VCC
CS1
CS2
RS
D1
D0
RST
PA
5
PA
4
PA
3
PA
2
PA
1
PA
0
PD6
PD5
PD4 PD7 PD3 PA
7
PD2 PA
6
Figure 26.
GLCD schematic
Figure 24.
Figure 25.
GLCD selection jumper
GLCD
GRAPHIC LCD
CONNECTOR
ON-BOARD
GRAPHIC LCD
CONNECTOR
ON-BOARD