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ACM1002A Datasheet(PDF) 6 Page - AZ Displays

Part No. ACM1002A
Description  SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY
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Maker  AZDISPLAYS [AZ Displays]
Homepage  http://www.azdisplays.com
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ACM1002A Datasheet(HTML) 6 Page - AZ Displays

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Page 5
Commands
The display control instructions control the internal state of the PCF2119_RU/2(PHILIPS)
Instruction is received from MPU to PCF2119_RU/2(PHILIPS)for the splay control. The following
table shows various instructions.
X: Don’t care Table 6
Instruction
R
S
R
W
D
B
7
D
B
6
D
B
5
D
B
4
D
B
3
D
B
2
D
B
1
D
B
0
Description
H = 0 or 1
Function set
0
0
0
0
1
D
L
0
M
S
L
H
sets interface Data Length (DL) and
number of display lines (M); single
line/MUX 1 : 9 (SL), extended instruction
set control (H)
Read busy flag
and address
counter
0
1
B
F
AC
reads the Busy Flag (BF) indicating
internal
operating is being performed and reads
address counter contents
Read data
1
1
read data
reads data from CGRAM or DDRAM
Write data
1
0
write data
writes data from CGRAM or DDRAM
H = 0
Clear display
0
0
0
0
0
0
0
0
0
1
clears entire display and sets DDRAM
address 0 in address counter
Return home
0
0
0
0
0
0
0
0
1
0
sets DDRAM address 0 in address
counter; also returns shifted display to
original position; DDRAM contents
remain unchanged
Entry mode set
0
0
0
0
0
0
0
1
I
/
D
S
sets cursor move direction and specifies
shift of display; these operations are
performed during data write and read
Display control
0
0
0
0
0
0
1
D C B sets entire display on/off (D), cursor


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