ML9227 データシートの表示（PDF） - Oki Electric Industry

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ML9227

27-Bit Duplex/Triplex VFD Controller/Driver with Digital Dimming, ADC and Key scan

Oki Electric Industry 

OKI Semiconductor

FEDL9227-01

ML9227

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]

Input Data

Digital Dimming Data

Mode Data

: 13 bits

: 10 bits

: 3 bits

Bit

Input Data

12

D1 D2

LSB

345678

D3 D4 D5 D6 D7 D8

Digital Dimming Data (10 bits)

9 10

D9 D10

MSB

11 12 13

M0 M1 M2

Mode Data

(3 bits)

(LSB)

Dimming Data

(MSB)

D1 D2 D3 D4 D5 D6 D7 D8 D9 D10

000000000 0

100000000 0

Duty Cycle

0/1024

1/1024

111011111 1

000111111 1

100111111 1

1015/1024

1016/1024

1016/1024

111111111 1

1016/1024

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

3.6 µs

[Input Data Format]

Input Data

Mode Data

: 3 bits

: 3 bits

Bit

Input Data

28 29 30

M0 M1 M2

Mode Data

(3 bits)

15/26

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