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參數(shù)資料
| 型號： | SED1521 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | DOT MATRIX LCD DRIVER |
| 中文描述： | 點(diǎn)陣液晶驅(qū)動 |
| 文件頁數(shù)： | 30/52頁 |
| 文件大?。?/td> | 204K |
| 代理商： | SED1521 |
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4.14.1 – 4.14.1
4.0 Commands
S-MOS Systems, Inc. 150 River Oaks Parkway San Jose, CA 95134 Tel: (408) 922-0200 Fax: (408) 922-0238
371-1.0
30
Table 3 Commands
* With display off (command (1)), static drive going on (9) invokes power-saving mode.
Command
Code
Function
A0 RD WR D7 D6 D5 D4 D3 D2 D1 D0
(1)
Display ON/OFF
0
1
0
1
0
1
0
1
1
1
0/1
Turns all display on or off, independently of dis-
play RAM data or internal status.
1: ON
0: OFF
(Power-saving mode with static drive on)*
(2)
Display start line
0
1
0
1
1
0
Display Start Address
(0–31)
Specifies RAM line corresponding to uppermost
line (COM0) of display.
(3)
Set page address
0
1
0
1
0
1
1
1
0
Page
(0–3)
Sets display RAM page in page address register.
(4)
Set column
(segment) address
0
1
0
0
Column Address (0–79)
Sets display RAM column address in column
address register.
(5)
Read status
0
0
1
B
A
O
R
0
0
0
0
Reads the following status:
BUSY
1: Internal operation, 0: Ready
ADC
1: CW output (forward),
0: CCW
output (reverse)
ON/OFF
1: Display off, 0: Display on
RESET
1: Being reset, 0: Normal
(6)
Write display data
1
1
0
Write Data
Writes data from
data bus into
display RAM.
Display RAM location
whose address has been
preset is accessed. After
access, the column
address is incremented
by 1.
(7)
Read display data
1
0
1
Read Data
Reads data from
display RAM onto
data bus.
(8)
Select ADC
0
1
0
1
0
1
0
0
0
0
0/1
Used to invert relationship of assignment
between display RAM column addresses and
segment driver outputs.
0: CW output (forward)
1: CCW output (reverse)
(9)
Static drive ON/
OFF
0
1
0
1
0
1
0
0
1
0
0/1
Selects normal display or static driving operation.
1: Static drive (power-saving mode)
0: Normal driving
(10)
Select duty
0
1
0
1
0
1
0
1
0
0
0/1
Selects LCD cell driving duty.
1: 1/32
0: 1/16
(11)
Read modify write
0
1
0
1
1
1
0
0
0
0
0
Increments column address counter by 1 when
display data is written. (This is not done when
data is read.)
(12)
End
0
1
0
1
1
1
0
1
1
1
0
Clears read modify write mode.
(13)
Reset
0
1
0
1
1
1
0
0
0
1
0
Sets display start line register on the first line.
Also sets column address counter and page
address counter to 0.
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