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78K0R - Cool it!
3.12 Display D1, 16*2 character LC display
The 78K0R – Cool it! board is equipped with a character LC display. The alignment of the display is equal
to 16 character words at 2 lines. The LCD module contains about a character generator ROM - including
predefined standard characters - and a character RAM where the user can define its own characters. The
display is connected to the 78K0R/KG3 device via three control lines and eight data lines.
Display Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
For more details about the LC display specification, commands and character table, please refer to the
corresponding User's Manual "ML9042.pdf" located in the /doc folder of the 78K0R – Cool it! CDROM.
3.13 Potentiometer VR1
The 10K potentiometer VR1 is connected between L_EVDD and ground. The potentiometer arm is
connected to the V0 signal of the LCD module. It controls the operating voltage - contrast adjustment - of
the LC display D1.
Display Signal
78K0R/KG3
RS0
RW
E
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
GND
VDD
V0
F-GND
Table 15: Display connections
User's Manual U18426EE1V0UM00
78K0R - Cool it! board
I/O pin
P50
P66
P65
P80
P81
P82
P83
P84
P85
P86
P87
VR1 potentiometer arm
GND via capacitor C3
-
-
-
-
-
-
-
-
-
-
-
GND
L_EVDD
20
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