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3.0
OPERATION
3.1
Instruction Set
Instruction
RS
R/W DB
Clear Display
0
0
Return Home
0
0
Entry Mode Set
0
0
Display ON/OFF
0
0
Control
Cursor or Display
0
0
Shift
Function Set
0
0
Set CG RAM
0
0
Address
Set DD RAM
0
0
Address
Read Busy Flag
0
1
and Address
Write Data to CG
1
0
or DD RAM
Read Data from
1
1
CG or DD RAM
Industrial Electronic Engineers, Inc.
Van Nuys, California
Code
DB
DB
DB
DB
7
6
5
4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
S/C R/L
0
0
1
DL
1
0
1
1
BF
I/D=1:
Increment
I/D=0:
Decrement
S=1:
Enable Shift Operation
S/C=1:
Shift Display
S/C=0:
Shift Cursor
R/L=1:
Shift Right
R/L=0:
Shift Left
DL=1:
8–bit operation
DL=0:
4–bit operation
BF=1:
Operating internally
BF=0:
Can accept instruction
Figure 5
DB
DB
DB
3
2
1
0
0
0
1
Clears entire display and sets DD RAM to 0
Sets DD RAN counter to 0. If the display has been
shifted, characters are returned to their initial
0
1
*
positions. DD RAM contents remain unchanged.
Sets shift register direction and cursor movement
1
I/D
S
direction which occur during data read and write
operations
Turns ON/OFF the entire display (D), cursor) and
D
C
B
cursor blink attribute (B).
Moves cursor or shifts entire display one position.
*
*
DD RAM contents are unchanged.
0
Sets Interface Data Length.
*
*
Sets CG RAM address. CG RAM data is sent or
received after this is set.
Sets DD RAM address. DD RAM data is sent or
received after this is set.
Reads Busy Flag (BF) and Address Counter
Writes data into CG RAM or DD RAM.
Reads data from CG RAM or DD RAM.
DD RAM:
CG RAM:
A
CG
A
DD
AC
*
LCD Controller Instruction Set
SIZE
CODE IDENT
A
NO.
05464
Scale: NONE
Description
Display Data RAM
Character Generator RAM
CG RAM Address
DD RAM Address
(Corresponds to cursor address)
Address Counter
(used for both CG and DD RAM)
Don't Care
S03858–06–0105
Rev C
Sheet 10
Execution
Time (Max)
1.64 ms
1.64 ms
40 s
40 s
40 s
40 s
40 s
40 s
0 s
40 s
40 s
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