HD44780U
Clear
display
Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0000000001
Return
home
Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 0 0 1 * Note: * Don’t care.
Entry
mode set
Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 0 1 I/D S
Display
on/off control
Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 0 1DCB
Cursor or
display shift
Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 0 1 S/C R/L * * Note: * Don’t care.
Function set
Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 0 1 DL N F * *
Set CGRAM
address
Code
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 0 0 1 AAAAAA
Higher
Lower
order bit order bit
Figure 11 Instruction (1)
28