MSM9201-01 Datasheet, PDF (26/35 Pages) OKI electronic componets – Fluorescent Display Tube Controller Driver

¡ Semiconductor
PEDL9201-03
MSM9201-01
5. Display duty set
(writes display duty value to duty cycle register)
Display duty adjusts contrast in 8 stages using 3-bit data.
At the time power is turned on or the RESET signal is input, the duty cycle register value is
"0". Always execute this instruction 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 * * 1 0 1 : selects display duty set mode and sets duty value.
D0 (LSB) to D2 (MSB) : display duty data (3 bits: 8 stages)
* : don't care
[Relation between setup data and controlled COM duty]
HEX D2 D1 D0
0
000
1
001
2
010
3
011
4
100
5
101
6
110
7
111
COM duty
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(The state at the time power is turned on or RESET
signal is input)
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