No. 5396-8/15

LC74751

Address 189 (0BD hexadecimal)

DA

Register

Contents

Notes

0 to C

State

Function

0

VP0

0

If VS is the vertical display start position then:

The 6 bits VP5:0 specify the vertical display

(LSB)

1

start position.

1

VP1

0

The weight of the low order bit is 4·H.

1

H: the horizontal synchronization pulse period

2

VP2

0

1

3

VP3

0

1

4

VP4

0

1

5

VP5

0

(MSB)

1

6

VSZ10

0

The vertical character size for line 1

1

7

VSZ11

0

1

8

VSZ20

0

The vertical character size for line 2

1

9

VSZ21

0

1

A

VSZ30

0

The vertical character size for lines 3 through 12

1

B

VSZ31

0

1

5

VS = H

n = 0

VSZ10

0

1

VSZ11

0

1 H/dot

2 H/dot

1

3 H/dot

4 H/dot

VSZ30

0

1

VSZ31

0

1 H/dot

2 H/dot

1

3 H/dot

4 H/dot

VSZ20

0

1

VSZ21

0

1 H/dot

2 H/dot

1

3 H/dot

4 H/dot

Note: The states of all registers are set to zero when the IC is reset by the RST pin.