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Instruction RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Clear Display 0 0 0 0 0 0 0 0 0 1
Cursor Home 0 0 0 0 0 0 0 0 1 x
Entry Mode Set 0 0 0 0 0 0 0 1 I/D S
Display On/Off Control 0 0 0 0 0 0 1 D C B
Cursor/Display Shift 0 0 0 0 0 1 S/C R/L x x
Function Set* 0 0 0 0 1 DL N x BR1 BR0
CGRAM Address Set 0 0 0 1 CGRAM Address
DDRAM Address Set 0 0 1   DDRAM Address
Address Counter Read 0 1 BF=0   AC Contents
DDRAM or CGRAM 1 0     Write Data
DDRAM or CGRAM 1 1     Read Data
       
/D = 1 : Increment I/D = 0 : Decrement N = 1: Multiple lines N = 0: Single line
S = 1 : Shift enabled S = 0 : Shift disabled D = 1: Display is on D = 0: Display is off
S/C = 1:Display Shift S/C = 0: Cursor move C = 1: Cursor is on C = 0: Cursor is off
R/L = 1 : Shift to the right R/L = 0 : Shift to the right B = 1: Blinking enabled B = 0: Blinking disabled
DL = 1 : 8 bits DL = 0 : 4 bits    
       
DDRAM = Display Data RAM CGRAM = Character Generator RAM
(BR1,BR0) = (0,0) : 100%; (0,1) : 75%; (1,0) : 50% (1,1) : 25%
       
* Note: The instructions shown above are compatible with the Hitachi HD44780U LCD controller IC, with the exception of the added luminance control bits (BR1, BR0) in the Function Set instruction.
       
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