ACM2004D Datasheet, PDF (10/11 Pages) AZ Displays – SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY

ACM2004D SERIES CHARACTER MODULE VER1.1
Clear
Display
0 0 0 0 0 0 0 0 0 1 Clears Display & Returns to Address 0. 1.64ms
Cursor at
Home
0 0 0 0 0 0 0 0 1 x Returns Cursor to Address 0. Also
returns the display being shifted to the
original position. DDRAM contents
remain unchanged.
1.64ms
Entry Mode 0 0 0 0 0 0 0 1 I/D S I/D: Set Cursor Moving Direction
Set
I/D=1: Increment
I/D=0: Decrement
40µs
S: Specify Shift of Display
S=1: The display is shifted
S=0: The display is not shifted
Display
ON/OFF
Control
0 0 0 0 0 0 1 D C B Display D=1: Display on
D=0: Display off
Cursor C=1: Cursor on
C=0: Cursor off
Brink B=1: Brink on
B=0: Brink off
40µs
Cursor /
Display
Shift
0 0 0 0 0 1 S/C R/L x
x Moves cursor or shifts the display w/o
changing DD RAM contents
S/C=0: Cursor Shift (RAM unchanged)
S/C=1: Display Shift (RAM unchanged)
R/L=1: Shift to the Right
R/L=0: Shift to the Left
Function
Set
0 0 0 0 1 DL N F x x Sets data bus length (DL), # of display
lines (N), and character fonts (F).
DL=1: 8 bits
F=0: 5x7 dots
DL=0: 4 bits
F=1: 5x10 dots
N=0: 1 line display
N=1: 2 lines display
Set CG
RAM
Address
0 0 0 1 Character Generator (CG) RAM
Address
Sets CG RAM address. CG RAM data
is sent and received after this
instruction.
Set DD
RAM
Address
0 0 1 Display Data (DD) RAM Address /
Cursor Address
Sets DD RAM address. DD Ram data
is sent and received after this
instruction.
Busy Flag /
Address
Read
0 1 B Address counter used for both DD &
F CG RAM address
Reads Busy Flag (BF) and address
counter contents.
Write Data 1 0
Write Data
Writes data into DDRAM or CGRAM.
Read Data 1 1
x: Don't Care.
Read Data
Reads data from DDRAM or CGRAM.
40µs
40µs
40µs
40µs
40µs
46µs
46µs
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