ml9227 Oki Semiconductor, ml9227 Datasheet - Page 15

• Manufacturer Part Number: ml9227
• Description: 27-bit Duplex/triplex Vfd Controller/driver With Digital Dimming, Adc And Key Scan
• Manufacturer: Oki Semiconductor

Digital Dimming Data Input [Function Mode: 4]
• ML9227 receives the digital dimming data when function mode 4 is selected.
• The output duty changes in the range of 0/1024 (0%) to 1016/1024 (99.2%) for each grid.
• The 10-bit digital dimming data is input from LSB.
[Data Format]
Key scan Stop [Function Mode: 5]
• ML9227 stops a key scanning when function mode 5 are selected.
• To select this mode, the only mode data (M0 to M2) is needed.
• The actual time lag range between receipt of the keyscan stop command and the ceasing of scanning is 2.4 µs to
[Input Data Format]
OKI Semiconductor
Input Data
Digital Dimming Data
Mode Data
3.6 µs
Input Data
Mode Data
Input Data
Bit
Input Data
Bit
LSB
(LSB)
D1
D1
1
0
1
1
0
1
1
M0
28
Mode Data
D2
D2
2
0
0
1
0
0
1
(3 bits)
: 10 bits
:
:
: 13 bits
:
M1
29
D3
D3
3 bits
3 bits
3
0
0
1
0
0
1
3 bits
Digital Dimming Data (10 bits)
M2
30
D4
D4
4
0
0
0
1
1
1
Dimming Data
D5
D5
5
0
0
1
1
1
1
D6
D6
6
0
0
1
1
1
1
D7
D7
7
0
0
1
1
1
1
D8
D8
8
0
0
1
1
1
1
D9
D9
9
0
0
1
1
1
1
(MSB)
MSB
D10
D10
10
0
0
1
1
1
1
M0
11
Mode Data
Duty Cycle
1015/1024
1016/1024
1016/1024
1016/1024
(3 bits)
0/1024
1/1024
M1
12
FEDL9227-01
M2
13
ML9227
15/26