GDM128128A Datasheet, PDF (12/14 Pages) List of Unclassifed Manufacturers – SPECIFICATIONS OF LCD MODULE

GDM128128A
This command is used for writing data from the MPU to external display RAM, and reading
data from external display RAM to the MPU. Data write /data read should be executed after
setting address using ser address pointer command. The address pointer can be automatically
incremented or decremented using this command.
Note: this command is necessary for each 1-byte datum. Refer to the following flowchart.
Data write start
set address pointer
status check1 STA0.1
set write data
status check1
Data write C0H
END
8). Screen peek
CODE HEX.
FUNCTION
11100000 E0H Screen peek
OPERAND
—
This command is used to transfer 1 byte of displayed data to the data stack; this byte can
then be read from the MPU by data access. The logical combination of text and graphic display
data on the LCD screen can be read by read by this command.
The status (STA6) should be checked just after the screen peek command. If the address
determined by the set address pointer command is not in the graphic area, this command is
ignored and a status flag (STA6) is set.
Refer to the following flowchart.
V: A
2001/12/05
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