Rainbow Electronics HD44780 - Manual (Page 46)

HD44780U
46
Initialization ends
Wait for more than 15 ms
after V
CC
rises to 4.5 V
Wait for more than 40 ms
after V
CC
rises to 2.7 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.)
DB7
0
DB6
0
DB5
1
DB4
1
RS
0
R/W
0
Wait for more than 4.1 ms
DB7
0
DB6
0
DB5
1
DB4
1
RS
0
R/W
0
Wait for more than 100
µ
s
DB7
0
DB6
0
DB5
1
DB4
1
RS
0
R/W
0
DB7
0
DB6
0
DB5
1
DB4
0
RS
0
R/W
0
0
N
0
1
0
0
0
0
0
F
0
0
0
0
0
1
1
0
0
0
0
0
I/D
0
0
0
0
1
0
S
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
* *
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.
Display off
Display clear
Entry mode set
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.
Power on
Figure 24 4-Bit Interface