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參數(shù)資料
| 型號： | GDM12864A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Liquid Crystal Display Module |
| 中文描述： | 液晶顯示模塊 |
| 文件頁數(shù)： | 19/22頁 |
| 文件大?。?/td> | 198K |
| 代理商： | GDM12864A |
64CH Segment Driver For Dot Matrix LCD
17
1998 Intech LCD Group Ltd.
RS
L
R/W
L
H
L
H
Function
Instruction
Status read (busy check)
Data write (from input register to display data RAM )
Data read (from display data RAM to output register)
H
4. Reset
The system can be initialized by setting RSTB terminal at low level when turning power on, receiving
instruction from MPU. When RSTB becomes low, following procedure is occurred.
1. Display off
2. Display start line register become set by 0.(Z-address 0)
While RSTB is low, No instruction except status read can by accepted. Therefore, execute other
instructions after making sure that DB4= (clear RSTB) and DB7=0 (ready) by status read instruction.
The conditions of power supply at initial power up are shown in table 1.
Table 1. Power Supply Initial Conditions
Item
Symbol
Min
Typ
Max
Unit
Reset Time
Rise Time
t
RS
t
R
1.0
-
-
-
-
200
us
ns
0.3V
DD
0.7V
DD
V
DD
RSTB
t
R
t
RS
4.5[V]
5. Busy flag
Busy flag indicates that KS0108B is operating or no operating. When busy flag is high, KS0108B is in
internal operating .
When busy flag is low, KS0108B can accept the data or instruction.
DB7indicates busy flag of the KS0108B.
Busy Flag
E
T Busy
f
CLK
is CLK1, CLK2 Frequency
1/f
CLK
<T Busy<3/f
CLK
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