HD44780 Hitachi Semiconductor (acquired by Renesas), HD44780 Datasheet - Page 46

• Manufacturer Part Number: HD44780
• Description: Dot Matrix Liquid Crystal Display Controller/driver
• Manufacturer: Hitachi Semiconductor (acquired by Renesas)

HD44780U
46
Wait for more than 4.1 ms
Wait for more than 100 s
Wait for more than 15 ms
RS
RS
RS
RS
0
0
0
0
0
0
0
0
0
0
0
0
after V
R/W
R/W
R/W
R/W
Initialization ends
0
0
0
0
0
0
0
0
0
0
0
0
CC
Power on
DB7
DB7
DB7
DB7
N
0
0
0
0
0
0
1
0
0
0
0
rises to 4.5 V
DB6
DB6
DB6
DB6
0
0
0
0
0
F
0
0
0
0
0
1
DB5
DB5
DB5
DB5
I/D
1
1
1
1
1
*
0
0
0
0
0
DB4
DB4
DB4
DB4
S
1
1
1
0
0
0
0
0
1
0
*
Figure 24 4-Bit Interface
Wait for more than 40 ms
after V
BF cannot be checked before this instruction.
Function set (Interface is 8 bits long.)
BF cannot be checked before this instruction.
Function set (Interface is 8 bits long.)
BF cannot be checked before this instruction.
Function set (Interface is 8 bits long.)
BF can be checked after the following instructions.
When BF is not checked, the waiting time between
instructions is longer than the execution instuction
time. (See Table 6.)
Function set (Set interface to be 4 bits long.)
Interface is 8 bits in length.
Function set (Interface is 4 bits long. Specify the
number of display lines and character font.)
The number of display lines and character font
cannot be changed after this point.
Display off
Display clear
Entry mode set
CC
rises to 2.7 V