IK2108A

7

May 2012, Ver. 03

Display Mode and RAM Address

Data transmitted from an external device to IK2108A via the serial interface are stored in the Display

RAM and are assigned addresses. When the power is turned ON, the memory is

set at “0”. The RAM

Addresses of IK2108A are given below in 8 bit unit.

dimming

SG1

SG4

SG5

SG8

SG9

SG14

GR1

00H

L

00H

U

01H

L

01H

U

02H

m

03

GR2

04H

L

04H

U

05H

L

05H

U

06H

m

07

GR3

08H

L

08H

U

09H

L

09H

U

0AH

m

0B

GR4

0CH

L

0CH

U

0DH

L

0DH

U

0EH

m

0F

GR5

10H

L

10H

U

11H

L

11H

U

12H

m

13

GR6

14H

L

14H

U

15H

L

15H

U

16H

m

17

GR7

18H

L

18H

U

19H

L

19H

U

1AH

m

1B

GR8

1CH

L

1CH

U

1DH

L

1DH

U

1EH

m

1F

GR9

20H

L

20H

U

21H

L

21H

U

22H

m

23

GR10

24H

L

24H

U

25H

L

25H

U

26H

m

27

GR11

28H

L

28H

U

29H

L

29H

U

2AH

m

2B

GR12

2CH

L

2CH

U

2DH

L

2DH

U

2EH

m

2F

b0

b3

b4

b7

b0

b3

b4

b7

b0

b5

b0

b7

xxH

L

xxH

U

xxH

L

xxH

U

xxH

m

xx

Lower 4

bits

Higher 4

bits

Lower 4

bits

Higher 4

bits

Lower 6 bits

8 bits

1’st byte

2’nd byte

3’rd byte

4’th byte

DIN

b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7 b0 b1 b2 b3 b4 b5 b6 b7

dimming

don’t care

data for SG1-SG8

data for SG9-SG14

don’t care

Dimming Quantity Settings:

b2

b1

b0

Pulse

width

0

0

0

1/16

0

0

1

2/16

0

1

0

3/16

0

1

1

5/16

1

0

0

7/16

1

0

1

10/16

1

1

0

14/16

1

1

1

reserved