GDM12864A Datasheet, PDF (21/22 Pages) List of Unclassifed Manufacturers – Liquid Crystal Display Module

64CH Segment Driver For Dot Matrix LCD 19
Display Control Instruction
The display control instructions control the internal state of the KS0108B. Instruction is received from MPU
to KS0108B for the display control. The following table shows various instructions.
Instruction RS
Read Display
Date
1
Write Display
Date
1
Status Read
0
Set Address
(Y address)
0
Set Display
Start Line
0
Set Address (X
address)
0
Display On/off 0
RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Function
Reads data (DB[7:0]) from
1
Read data
display data RAM to the
data bus.
Writes data (DB[7:0]) into
the DDRAM. After writing
0
Write data
instruction, Y address is
incriminated by 1
automatically
Reads the internal status
BUSY
0: Ready
1: In operation
1
Busy
0
ON/ Re-
OFF set
0
0
0
0
ON/OFF
0: Display ON
1: Display OFF
RESET
0: Normal
1: Reset
0
0
1
Y address (0~63)
Sets the Y address at the
column address counter
Indicates the Display Data
0
1
1
Display start line (0~63)
RAM displayed at the top of
the screen.
0
1
0
1
1
1
Page (0~7)
Sets the X address at the X
address register.
Controls the display ON or
OFF. The internal status and
0
0
0
1
1
1
1
1 0/1 the DDRAM data is not
affected.
0: OFF, 1: ON
1. Display On/Off
The display data appears when D is 1 and disappears when D is 0.
Though the data is not on the screen with D=0, it remains in the display data RAM.
Therefore, you can make it appear by changing D=0 into D=1.
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
00
0
0
1
1
1
1
1
D
2. Set Address (Y Address)
Y address (AC0~AC5) of the display data RAM is set in the Y address counter.
An address is set by instruction and increased by 1 automatically by read or write operations of
display data.
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
00
0
1 AC5 AC4 AC3 AC2 AC1 AC0
© 1998 Intech LCD Group Ltd.