Notes:

•

In order to centralize the three characters above the five characters on the row below, a “transparent” blank character has

been used as the first character on the row.

•

In order to create the transparent skipped lines between the two character rows, a row of no characters has been used,

resulting in a RE, SL, RE, SL control code sequence.

•

In this example, the transparent character is defined by the 2-color attribute table entry ATT0. Bit 4 of Frame Control Register

1 must be set to indicate that the black color is to be translated as transparent (see section Control Register Definitions).

•

The top row of characters are yellow on black; in this example, these are defined by the 2-color attribute table entry ATT9.

•

The second row of characters are blue on black; in this example, these are defined by the 2-color attribute table entry ATT10.

•

The black background of the characters are not transparent because ATT9 and ATT10 are used.

•

The data shown in Table 12 is sent to the LM1237 in four I

TABLE 12. Example 3 I

Data Sent

Description

RAM Address

I

0xBA

Chip address (See the Microcontroller Interface Section)

0x00

Address LSB

0x80

Address MSB

0x00

Use Attribute table 0x00 for the following characters

0x00

Skip 2 lines Command

0x8000

0x80

Character “ ”

0x8001

I

I

0xBA

Chip address (See the Microcontroller Interface Section)

0x02

Address LSB

0x80

Address MSB

0x09

Use Attribute table 0x09 for the following characters

0x02

Character “A”

0x8002

0x03

Character “B”

0x8003

0x04

Character “C”

0x8004

0x01

Row-End (RE) Command

0x8005

I

I

20023434

FIGURE 23. Example 3 OSD

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