TOPWAY
LCD Module User Manual
LMB204BDC
1.4 Terminal Functions
Pin No.
1
2
3
4
Pin
Name
VSS
VDD
V0
RS
I/O
Power
Power
Power
Input
5
R/W
Input
6
E
Input
7
DB0
I/O
:
:
14
DB7
15
BLA Power
16
BLK Power
Descriptions
Power supply, Ground (0V)
Positive power supply
LCD contrast reference supply
Register Select
RS=HIGH: transferring display data
RS=LOW: transferring instruction data
Read / Write Control:
R/W=HIGH: Read mode selected
R/W=LOW: Write mode selected
Data Enable
Bi-directional tri-state Data bus
In 8 bit mode, DB0 ~ DB7 are in use
In 4 bit mode, DB4 ~ DB7 are in use, DB0~DB3 leave open
Backlight positive supply
Backlight negative supply
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Document Name: LMB204BDC-Manual-Rev0.1.doc
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