ML9209 データシートの表示（PDF） - LAPIS Semiconductor Co., Ltd.
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ML9209 Datasheet PDF : 29 Pages
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LAPIS Semiconductor
FEDL9209-01
ML9209-xx
5. “Display duty set” command
(Writes display duty value into the duty cycle register.)
For display duty, brightness can be adjusted in 16 stages using 4-bit data.
When power is turned on or when the RESET signal is input, the duty cycle register value is “0”. Always
execute this command before turning the display on, then set a desired duty value.
[Command format]
1st byte
LSB
MSB
B0 B1 B2 B3 B4 B5 B6 B7
D0 D1 D2 D3 1 0 1 0 : setup and duty value in display duty specification mode are
specified.
D0 (LSB) to D3 (MSB) : Display duty data (4 bits: 16 stages worth)
[Relation between setup data and controlled COM duty]
HEX D0 D1 D2 D3
0
0
0
0
0
1
1
0
0
0
2
0
1
0
0
3
1
1
0
0
4
0
0
1
0
5
1
0
1
0
6
0
1
1
0
7
1
1
1
0
COM duty
0/16
1/16
2/16
3/16
4/16
5/16
6/16
7/16
HEX D0 D1 D2 D3
0 00 0 1
1 10 0 1
2 01 0 1
3 11 0 1
4 00 1 1
5 10 1 1
6 01 1 1
7 11 1 1
* The state when power is turned on or when the RESET signal is input.
COM duty
8/16
9/16
10/16
11/16
12/16
13/16
14/16
15/16
19/29
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