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參數(shù)資料
| 型號： | S-4525BA |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | Dot Matrix LCD Driver(點陣LCD驅(qū)動器) |
| 中文描述： | 點陣LCD驅(qū)動器（點陣液晶驅(qū)動器） |
| 文件頁數(shù)： | 14/23頁 |
| 文件大小： | 166K |
| 代理商： | S-4525BA |
DOT MATRIX LCD DRIVER
S-4525BA
Seiko Instruments Inc.
13
Command
0,
R/WX (68 family MPU), RDX and WRX (80
family MPU). The command setting is executed according to the internal timing. If the Display data read timing
diagram, the Display data write timing diagram, and the timing characteristic diagram in the operation description are
satisfied, it is possible to input through the commands without confirming the busy flag. Therefore, high speed
operation and MPU load reduction are attainable. For the command list, refer to Table 16.
1. Display ON/OFF
The logic D
0
controls the display ON/OFF. In display OFF, the screen is compelled to be all-off regardless of the
display RAM data. The display RAM data does not change.
In display ON, normal display is on according to the display RAM data. When the display ON command is input,
display OFF is canceled.
When setting display all-lit ON in the display OFF status, it changes to Power save mode (see the Power Save
command.)
2. Display start line set
The line address of the display data RAM which indicates the display start line is set. The display start line
corresponding to COM0, as shown in the figure, indicates the correspondence between the display data RAM and
the address. The display area read from the display data RAM corresponds to the number of the lines for the duty
set using the Duty select command. The line address is automatically incremented synchronizing with the
common output. Changing the display START line using this command enables a smooth scroll on the screen or a
page change .
3. Page address set
The page address is set when accessing the display data RAM from the MPU. It is possible to access the display
data RAM from the MPU using the page address and the column address. Refer to the figure which shows the
correspondence between the display data RAM and the address. Even if the page address is changed, it has no
influence, such as chaging of the screen during operation.
4. Column address set
The column address is set when accessing the display data RAM from the MPU. When accessing the display data
RAM from the MPU, the column address is incremented by one. When accessing the successive column address
from the MPU, it is possible to access the display data without setting the column address each time. The
automatic increment stops at 80 after accessing the top column address 79. The page address is not incremented.
5. Status read
It is possible to read four kinds of status using this command.
Shows the command ready during the S-4525BA command operation.
“1” : Shows that the IC inside is executing a command operation or a reset operation.
When the Busy flag is output, the command is not received. If the cycle time of the command is
satisfied with the specified value, Busy flag confirmation is not needed.
“0” : Shows that the command is ready
Shows forward or reverse correspondence between column address and segment output terminal of the
display data RAM
The setting is executed using the ADC select command.
“1” : Forward
The column addresses 0
to 3C
corresponds to the segment output terminals 0 to 60.
“0” : Reverse
The column address 13
H
to 4F
H
corresponds to the segment output terminals 60 to 0.
Shows the display ON/OFF status.
Note: it is the reverse to the polarity of Display ON/OFF command.
“0” : Shows the display ON status.
Display normal operation status
“1” : Shows the display OFF status.
Display all-OFF status.
Shows that the S-4525BA is executing initialization by RESX input or Reset command.
“0” : Normal operation
“1” : Reset operation
Table 14 Status
Busy
ADC
ON/OFF
Reset
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