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參數(shù)資料
| 型號： | S-4543A |
| 廠商： | Seiko Instruments Inc. |
| 英文描述： | Dot Matrix LCD Driver(點(diǎn)陣LCD驅(qū)動器) |
| 中文描述： | 點(diǎn)陣LCD驅(qū)動器（點(diǎn)陣液晶驅(qū)動器） |
| 文件頁數(shù)： | 22/27頁 |
| 文件大?。?/td> | 163K |
| 代理商： | S-4543A |
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Dot Matrix LCD Driver
S-4543A
Seiko Instruments Inc.
21
13. Power Save Mode
When setting display all-OFF using the Display OFF command and executing the Display all-lit ON command, it
changes to the Power save mode. When displaying in all-lit status and executing the Display OFF command, it
also changes to the Power save mode. In the Power save mode,
Current consumption is reduced and a value near that at standstill is attainable.
The LCD drive circuit is stopped. The Segment and Common outputs are fixed at V
DD
level.
nput is prohibited and the OSC
2
terminal floats.
Content of the display data RAM, the command and the address before the power save mode do not
change.
The Power save status is canceled through the Display ON or the Display all-lit commands.
When the LCD driver voltage is generated by division of external resistance, the electric current is passed
through this divided resistance regardless of the ICs. When reducing this current, attach a switching transistor
which cuts the current flowing to the external resistance
.
Table 16 Power Save Commands
Command Combination
Status
Display
Display All-
Lit
OFF
ON
Normal display
operation
All-lit display
All-off
Power save
ON
OFF
OFF
ON
OFF
ON
Notes on command input:
The displayed data RAM reading/writing and status reading are done by activating E1 and E2 independently of
each other.
The commands for inputting data into the liquid crystal display are enabled by activating either E1 or E2.
Table 17 Command Input
Instructions which can
be executed and in
which commands can be
input with E1 and E2
active at the same time
Commands
corresponding to SEG0-
SEG60 and SEG61-119
with E1 or E2 active
Instructions which can
be executed and in
which commands can be
input with either E1 or
E2 is made active
Display ON/OFF
Display Start Line Set
Page Address Set
Column Address Set
Status Read
Display Data Write
Display Data Read
ADC select
Display All Lit/Unlit
Read Modify Write
End
Reset
Power Save
Prohibited
Prohibited
Prohibited
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|---|---|
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