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參數(shù)資料
| 型號(hào)： | SCE5781 |
| 廠商： | SIEMENS A G |
| 元件分類： | 顯示用LED |
| 英文描述： | 5X7 DOT MATRIX DISPLAY, YELLOW, 4.57 mm |
| 封裝： | PLASTIC, DIP-26 |
| 文件頁(yè)數(shù)： | 12/13頁(yè) |
| 文件大小： | 295K |
| 代理商： | SCE5781 |
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SCE5780/1/2/3/4/5
Table 4a. Display Brightness
Table 4b. Display Brightness
The SCE578X offers a unique Display Power Down feature
which reduces ICC to less than 150 A total. When EFHEX is
loaded (Table 5) the display is set to 0% brightness. When in
the Power Down mode data may still be written into the RAM.
The display is reactivated by loading a new brightness Level
Control Word into the display.
Table 5. Power Down
Figure 8. Row and Column Locations for a Character “D”
Op code
D7 D6
Control Word
D5
D4
D3
D2
D1
D0
Hex
Operation
Level
0
E0
100%
1
0
1
E1
53%
1
0
1
0
E2
40%
1
0
1
E3
27%
1
0
1
0
E4
20%
1
0
1
0
1
E5
13%
1
0
1
0
E6
6.6%
1
0
1
E7
0.0%
Op code
D7 D6
Control Word
D5
D4
D3
D2
D1
D0
Hex
Operation
Level
1
0
1
0
E0
100%
1
0
1
0
1
E1
53%
1
0
1
0
1
0
E2
40%
1
0
1
0
1
E3
27%
1
0
1
0
E4
20%
1
0
1
0
1
E5
13%
1
0
1
0
E6
6.6%
1
0
1
E7
0.0%
Op code
D7 D6
Control Word
D5 D4 D3 D2 D1 D0
Hex
Operation Level
1
0 1
1
1 1
EF
0% brightness
off LED
on LED
Row 0
Row 1
Row 2
Row 3
Row 4
Row 5
Row 6
Previously “on” LED
0 1 2 3 4
Columns
The user can activate four Control functions. These include:
LED Brightness Level, IC Power Down, Prescaler, or Display
Clear. OPCODEs and six bit words are used to initiate these
functions. The OPCODEs and Control Words for the Charac-
ter Address and Loading Column Data are shown in Tables 2
and 3 .
Table 2. Load Character Address
Table 3. Load Column Data
The user can select eight specic LED brightness levels,
Table 4. Depending on how D3 is selected either one (1) for
maximum peak current or zero (0) for 12.5% of maximum
peak current in the control word per Table 4a and 4b, the user
can select 16 specic LED brightness levels. These bright-
ness levels (in percentages of full brightness of the display)
depending on how the user selects D3 can be one (1) or zero
(0) are as follows: 100% (E0HEX or E8HEX), 53% (E1HEX or
E9HEX), 40% (E2HEX or EAHEX ), 27% (E3HEX or EBHEX ), 20%
(E4HEX or ECHEX ), 13% (E5HEX or EDHEX), and 6.6% (E6HEX
or EEHEX ), 0.0% (E7HEX or EFHEX ). The brightness levels are
controlled by changing the duty factor of the row strobe
pulse.
Op code
D7 D6 D5
Character
Address
D4 D3 D2 D1 D0
Hex
Operation Load
1
0
1
0
A0
Character 0
1
0
1
0
1
A1
Character 1
1
0
1
0
1
0
A2
Character 2
1
0
1
0
1
A3
Character 3
1
0
1
0
1
0
A4
Character 4
1
0
1
0
1
0
1
A5
Character 5
1
0
1
0
1
0
A6
Character 6
1
0
1
0
1
A7
Character 7
Op code
D7 D6 D5
Column Data
D4 D3 D2 D1 D0
Operation Load
0
C0 C1 C2 C3 C4
Row 0
0
C0 C1 C2 C3 C4
Row 1
0
C0 C1 C2 C3 C4
Row 2
0
C0 C1 C2 C3 C4
Row 3
0
C0 C1 C2 C3 C4
Row 4
0
C0 C1 C2 C3 C4
Row 5
0
C0 C1 C2 C3 C4
Row 6
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