msm9201-01 Oki Semiconductor, msm9201-01 Datasheet - Page 26

• Manufacturer Part Number: msm9201-01
• Description: Fluorescent Display Tube Controller Driver
• Manufacturer: Oki Semiconductor

¡ Semiconductor
5. Display duty set
[Command format]
[Relation between setup data and controlled COM duty]
1st byte
"0". Always execute this instruction before turning the display on, then set a desired duty
value.
(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
HEX
0
1
2
3
4
5
6
7
LSB
D0 D1 D2
B0 B1 B2 B3 B4 B5 B6 B7
D0 (LSB) to D2 (MSB) : display duty data (3 bits: 8 stages)
D2
0
0
0
0
1
1
1
1
D1
0
0
1
1
0
0
1
1
*
D0
0
1
0
1
0
1
0
1
*
1
* : don't care
COM duty
10/16
11/16
12/16
13/16
14/16
15/16
0
8/16
9/16
MSB
1
: selects display duty set mode and sets duty value.
(The state at the time power is turned on or RESET
signal is input)
PEDL9201-03
MSM9201-01
26/35