STE2007 datasheet(28/62 Pages) STMICROELECTRONICS

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5 Display Data RAM (DDRAM)

STE2007

28/62

Figure 22. Column address in reversed mode

Data can be written to the DDRAM at the same time as data is being displayed, without causing

the LCD to flicker.

Segment driver direction command can be used to reverse the relationship between the

DDRAM column address and segment output. This function is achieved writing data into

DDRAM in reverse order (from Right to left).

Table 16.

Column address direction

5.2

Line address circuit

The line address circuit specifies the line address relating to the COM output when the contents

of the DDRAM are displayed. The display start line that is normally the top line of the display,

can be specified by Display start line address set command.

STE2007 features Four different Multiplexing Mode to fine tune the duty ratio on the display

size:

–

68 Lines Display

–

65 Lines Display

–

49 Lines Display

–

33 Lines Display

Column

address

00H

01H

02H

5DH

5EH

5FH

5DH

Normal

Direction

SEG0

SEG1

SEG2

_ _ _ _ _ _

SEG93

SEG94

SEG95

Reverse

Direction

SEG95

SEG94

SEG93

_ _ _ _ _ _

SEG2

SEG1

SEG0

192

193

194

288

289

290

384

385

386

480

481

482

190

191

286

287

382

383

478

479

574

575

00H

01H

02H

5EH

5FH

Data

Page address

Column address

576

577

578

672

673

674

768

769

770

670

671

766

767

862

863

Data for page address 0H to 07H

Data for page address 8H

LSBit

MSBit

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