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SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE
MODEL NO: 240128-06
Pacific Display Devices
03.07.2006
16
(3) Address Pointer Set
The address pointer set command is used to indicate the start address for writing (or reading) to external RAM.
The flow chart address pointer set command
● Control Word Set
Code
Hex
Function
D1
D2
01000000
40H
Text home address set
Low address
High address
01000001
41H
Text area set
Columns
00H
01000010
42H
Graphic home address set
Low address
High address
01000011
43H
Graphic area set
Columns
00H
The home address and column size are defined by this command.
(1) Text Home Address Set
The starting address of external display RAM for Text display is defined by this command. The text home address
shows the left end and most upper position.
The relationship of external display RAM address and display position
TH
TH+CL
TH+TA
TH+TA+CL
(TH+TA)+TA
TH+2TA+CL
(TH+2TA)+TA
TH+3TA+CL
TH+(n-1)TA
TH+(n-1)TA+CL
TH : Text home address
TA : Text area number (columns)
CL : Columns are fixed by hardware. (pin-programmable)
ADDRESS POINTER SET
END
STATUS CHECK
LOW ADDRESS DATA SET
STATUS CHECK
COMMAND 24H SEND
STATUS CHECK
HIGH ADDRESS DATA SET
Address pointer set command send
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